| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 404025000 | Vault cover-closure | 70 |
| 20080213043 | PICK HOLE GUARD FOR MANHOLE COVERS - Pick hole guards are provided for use in guarding pick holes on manhole covers. In some embodiments of the present invention, the pick hole guards can have a base, biasing member, and guard member. The biasing member can be attached to the base and guard member, and can bias the guard member toward a pick hole on the manhole cover to guard the pick hole. In other embodiments, the pick hole guards do not have movable guard members, but instead have retaining surfaces to serve as a receptacle for catching waste disposed through a pick hole. | 09-04-2008 |
| 20080260460 | Security Device For Manhole Access Opening - A manhole security device for securing a manhole access opening includes a circular barrier adapted to rest on a manhole cover support flange of a manhole frame. Locking members on the barrier are movable between a locked position in which the locking members are adapted to engage the manhole frame and an unlocked position in which the locking members are not adapted to engage the manhole frame. A biasing mechanism on the barrier is adapted to bias each locking member to its locked position. A rotatable locking mechanism on the barrier engages the locking members and has a locking rotational position wherein the locking members are in the locked position and an unlocking rotational position wherein the locking members are in the unlocked position. The locking mechanism has a security lock adapted to receive a security key that applies a rotational torque to the locking mechanism. A latch on the barrier is adapted to releasably retain the locking mechanism in the unlocking rotational position without the security lock being engaged by the security key. A security tool for use with the security device is also disclosed. | 10-23-2008 |
| 20080310914 | Subterranean conduit cover - Provided herein are covers useful for covering the open end of an access conduit that may contain fluid control equipment. A cover according to the invention comprises a disc-shaped base portion having a top surface and a bottom surface, with a plurality of risers attached to its bottom surface. There is a contact shoe associated with each of the risers, and the contact shoes have a curvature and are disposed sufficiently on the bottom surface of the base portion so as to exert an outward mechanical force against the inner wall of a conduit that is capped by a cover according to the invention, when such cover is in its installed position, thus providing a secure, yet conveniently removable access cover/conduit assembly. | 12-18-2008 |
| 20080310915 | Subterranean conduit cover - Provided herein are covers useful for covering the open end of an access conduit that may contain fluid control equipment. In one embodiment, a cover according to the invention comprises a disc-shaped base portion having a top surface and a bottom surface, with a plurality of groups of stability tangs attached to its bottom surface. A cover as provided herein is readily adaptable to fit a large number of conduit boxes, valve boxes and the like which are presently in common use. | 12-18-2008 |
| 20090060654 | LID STABILIZING APPARATUS - The lid stabilizing apparatus is principally directed to a structure which will resist a force on a lid which will tend to dislodge the lid from the structure which it covers. Of particular interest is the lid covering municipal water valve structures where such lids are repeatedly struck by vehicular traffic and are dislodged and thrown into the street. The downwardly extending rod with stabilizing and, where desired, n-stabilizing disks, will be in friction or near friction contact with the pipe which is upwardly directed from a valve accessed from the street surface. This friction or near friction contact will resist the dislodging of the valve lid. | 03-05-2009 |
| 20090074509 | ANGLED MANHOLE SEALING BAND AND METHOD FOR USE - The invention relates to a device and method for sealing a manhole structure. A band with a relatively rigid angled corner engages the upper margin of a manhole structure. Adhesives may also be used with the band to enhance the seal with the manhole structure. | 03-19-2009 |
| 20090080972 | DEVICE FOR CLOSING AN OPENING, PARTICULARLY A STREET MANHOLE - The invention relates to a device for closing an opening, particularly a man hole. The inventive device comprises a frame ( | 03-26-2009 |
| 20090123227 | DUAL LIFTING MANHOLE COVER - A one-piece, unitary manhole cover has dual lifting ports that drain through the outer circumferential edge of the cover. A lifting channel runs from the interior of the upper face out to the outer circumferential edge. A lifting bar spans the lifting channel and defines an ergo lifting port and a pry bar lifting port. Both the ergo lifting port and the pry bar lifting port drain through the outer circumference of the manhole cover. | 05-14-2009 |
| 20090169298 | Road plate securing assembly - A road plate securing assembly for a roadway surface includes an assembly frame comprising a plurality of assembly frame members adapted for attachment to the roadway surface and each comprising a first surface, a second surface disposed at an acute angle with respect to the first surface, a uni-planar inner surface extending from the first surface to the second surface and a plate opening defined by the assembly frame members. A road plate can be fitted in the plate opening to cover a repair or construction area on the roadway. A road plate securing method is also disclosed. | 07-02-2009 |
| 20090169299 | DEVICE FOR LOCKING AND UNLOCKING A PLUG ON A FRAME USING A WRENCH - The invention relates to a secured device for locking and unlocking a plug on a frame with a wrench. The device has an obstructing component that is mobile with respect to a plug and can be brought from an obstructing position to an unobstructing position in which the wrench can engage a rotor of a bolt when an identification code of the wrench, read by a reader, is in agreement with the code stored in an electronic module that is associated with the plug. | 07-02-2009 |
| 20090252552 | Supplemental cover apparatus and method for access openings - A supplemental access cover is adapted to cover an access cover. The supplemental access cover includes a layer of material having a thickness in the range of 0.01 inch to 1.5 inches, and an apparatus for attaching the layer of material to the access cover. A method for paving uses the supplemental access cover. The method includes locating an access cover within an area to be paved, attaching a supplemental cover to the access cover, and paving over the access cover and the supplemental cover. The method for paving also includes relocating the access cover, and removing the supplemental cover from the access cover. | 10-08-2009 |
| 20090257823 | Method and mechanism for opening and closing of manhole covers - A cover for opening and closing a manhole includes a movable cover and a base cover, the movable cover and the base cover being connected to each other by a shaft manufactured from an aluminium bronze alloy that passes through at least one first hinge part fastened to the movable cover and at least two second hinge parts fastened to the cover base, the first hinge part being fastened perpendicularly to the second hinge parts. In this way, it is possible to manufacture robust manhole covers offering good comfort to a driver of a car, since the movable cover may be manufactured so that the distance between an outer rim of the movable cover and the base cover is minimized. | 10-15-2009 |
| 20090304445 | Subterranean conduit cover - Provided are covers useful for covering the open end of an access conduit that may contain fluid control equipment. In one embodiment, a cover according to the invention comprises a disc-shaped base portion having a top surface and a bottom surface, with a plurality of groups of stability tangs attached to its bottom surface. A cover as provided herein is readily adaptable to fit a large number of conduit boxes, valve boxes and the like which are presently in common use. | 12-10-2009 |
| 20090324328 | MANHOLE COVER SECURITY AND REMOVAL - A manhole cover includes a security device, preferably located beneath an upper surface thereof. A cover removing apparatus includes a magnetic element to hold the cover, when a pin of the apparatus is engaged with the security device of the cover. A push force, which may be applied through a port in the upper surface of the cover, for example, by the pin member, can deform, and thereby unlock, a spring-loaded locking member of the security device. The security device may further include at least one elongate member, which is caused to move from a first position to a second position, by the push force, in order to disengage the cover from a manhole, so that the cover may be removed from the manhole. | 12-31-2009 |
| 20100028077 | Manhole Cover Stop Mechanism - A stop mechanism advantageously combined with a manhole cover includes a holder body having a passage which slidably receives a stop member able to be cammed in and out upon advance or retraction of a threaded drive member having an enlarged tip engaged with a down sloping channel formed in the stop member. Upper sides of the channel engage the tip upon reversal of the drive member to cam the stop member back into the holder body. The stop member when extends prevents removal of the cover from being blown completely free of the manhole vault structure in the event of an explosion. | 02-04-2010 |
| 20100054857 | Secure Access Port System - A secure access port cover system comprises a cover and an access tool. The cover includes a base and one or more lids that are locked and unlocked via manipulation of a mechanical locking system housed within the interior of the base. A relatively small control port in the base provides access to the internal locking system. However, a specially adapted access tool is required to manipulate the internal locking system and move it between its locked and unlocked positions. Correspondingly, the access tool in one or more embodiments is a restricted-use item and not readily available to the public at large. Because the internal locking system can be manipulated only with the access tool, those not in possession of the access tool are unable to unlock the cover's lid(s) and unauthorized access to the underlying manhole or other access port is thereby prevented. | 03-04-2010 |
| 20100178105 | DEVICE FOR A PAVEMENT MANHOLE WITH A SUPPORT FRAME FOR CLOSING A PANEL HINGED ON THE FRAME USING PERMANENT ARTICULATION MEANS - The present invention relates to a device for a pavement manhole with a support frame, for closing a panel hinged on the frame using permanent articulation means. The device is characterised in that the pivot axis ( | 07-15-2010 |
| 20100290835 | TRENCH COVER - A trench cover is described. Such a cover engages with the ground through curved surfaces. In this way multiple points of contact between the ground and the cover are provided which allows the cover to be used with a variety of road or pathway surfaces and yet minimises any rocking of the cover relative to these surfaces. | 11-18-2010 |
| 20100296865 | Utilities Access Closure - A concrete lid for an in-ground utilities box includes a plastic reinforcement structure filled with concrete. The plastic reinforcement structure includes one or more plastic sidewalls that protect the edges of the lid from damage. The upper and lower surfaces of the lid are exposed concrete (with the exception of the upper and lower edges of the one or more plastic sidewalls). The one or more plastic sidewalls laterally surround a plastic reinforcement grid, which is centrally located between the upper and lower edges of the one or more plastic sidewalls. The one or more plastic sidewalls can be integrally formed with the plastic reinforcement grid. The plastic reinforcement grid reinforces the concrete lid, eliminating the need for separate reinforcement material. Support struts can be used to support the plastic reinforcement grid while wet concrete is being poured into the plastic reinforcing structure. | 11-25-2010 |
| 20100329782 | Utilities Access Closure - A concrete lid for an in-ground utilities box includes a reinforcement structure filled with concrete. The reinforcement structure includes a plastic frame and one or more reinforcing trusses that extend between opposing sidewalls of the plastic frame. The reinforcing trusses also extend substantially between the upper and lower edges of the opposing sidewalls. For example, a reinforcing truss may include a flat truss member that is substantially coplanar with the lower edges of the sidewalls, and an arched truss member that extends towards (but does not reach) a plane defined by the upper edges of the sidewalls. The reinforcing trusses include openings that allow wet concrete to pass through. The sidewalls of the plastic frame protect the edges of the lid from damage. The reinforcing trusses reinforce the concrete lid, eliminating the need for separate reinforcement material. | 12-30-2010 |
| 20110150570 | MANHOLE ASSEMBLY AND RELATED METHOD - A manhole assembly ( | 06-23-2011 |
| 20110200388 | Anti-Theft Device for Removeable Manhole and Gully Covers - An anti-theft device for a removable manhole covers or the includes a fixed iron frame that is embedded in a mass of concrete surrounding the manhole and a removable iron gully cover having an outer rim and a plurality of parallel cross members that define a plurality of openings in the cover. The fixed iron frame and removable gully cover each have a generally rectangular shape and the cover is constructed and dimensioned to fit within the frame to close the opening. A pair of shackles and an iron chain are provided to attach the cover to the frame in many manners described which will result in the ability of opening the manhole cover with the prevention of the removal of the cover from the immediate area. | 08-18-2011 |
| 20110222963 | MANHOLE COVER DEVICE - A rubber manhole cover, suitable for attaching to a top of a metal manhole lid, includes at least two bonded layers of rubber material of differing properties, including a bottom layer of a first rubber material, and a top layer of vulcanized rubber material, the top and bottom layers functioning as a single unit. | 09-15-2011 |
| 20110268501 | MANHOLE COVER - The present invention relates to a manhole cover which has an upper body and a lower body coupled to each other to maintain balance, to endure loads applied from an external source in a stable manner, to protect the inside of the manhole from the ingress of rainwater, and to enable the upper body to be stably fixed inside the lower body. To accomplish the above-described aim, the key technical features of the present invention relate to a manhole cover, comprising: a lower body, the inside of which is hollow, with a spiral rib formed along the inner surface of the hollow space, and a convex-concave portion formed on the upper surface of the spiral rib; an upper body which is coupled inside the lower body, and the inside of which is hollow, with a spiral rib and a convex-concave portion formed along the outer surface thereof to correspond to the spiral rib and the convex-concave portion of the lower body, and a stepped portion formed at the upper surface thereof; a cover mounted in the stepped portion of the upper body to protect the inside of the upper body from the introduction of foreign objects; and a waterproofing means removably arranged inside the upper body to protect the inside of the manhole from the ingress of rainwater. | 11-03-2011 |
| 20110311306 | PICK HOLE GUARD FOR MANHOLE COVERS - Pick hole guards are provided for use in guarding pick holes on manhole covers. In some embodiments of the present invention, the pick hole guards can have a base, biasing member, and guard member. The biasing member can be attached to the base and guard member, and can bias the guard member toward a pick hole on the manhole cover to guard the pick hole. In other embodiments, the pick hole guards do not have movable guard. members, but instead have retaining surfaces to serve as a receptacle for catching waste disposed through a pick hole. | 12-22-2011 |
| 20120020728 | HINGE ASSEMBLY AND CORRESPONDING ROAD DEVICE - This hinge assembly comprises a lid with a covering web and a hinge adapted for enabling an angular movement of the lid between an open position and a closed position, the hinge including a first cam and a first counter-cam, the first cam and the first counter-cam cooperating over a first angular range. The hinge comprises an additional cam and an additional counter-cam cooperating over an additional angular range. The first angular range and the additional angular range overlap over an angular overlap range that amounts to at least 60° and over the entire range of which both the first cam and counter-cam and the additional cam and counter-cam cooperate simultaneously. The device can be used for road manholes. | 01-26-2012 |
| 20120020729 | COVER FOR A ROAD SYSTEM DEVICE AND CORRESPONDING ROAD SYSTEM DEVICE - A cover for a road system device provided with a frame comprises: a blocking member and a base body defining a covering surface for the road system device, extending in a cover plane, and having a housing for receiving the blocking member. The housing and the blocking member are adapted for blocking the cover relative to the frame or to a neighboring cover. The housing is adapted to maintain the blocking member relative to the base body autonomously and to oppose a movement of the blocking member in a direction extending perpendicular to the cover plane and tending to move the blocking member away from the covering surface. The invention is applicable to access manholes for underground installations. | 01-26-2012 |
| 20120087724 | Corrosion-Resistant Self-Locking Manhole Cover - A corrosion-resistant self-locking manhole cover includes a cover plate adapted to rest on a manhole cover support surface of a manhole frame so as to be substantially flush with a top portion of the frame and a surrounding surface. An anchor on the cover plate, which may comprise nonmetallic corrosion-resistant material, is adapted to engage the manhole frame at a first location in a manner that resists lifting of the cover plate proximate to such location. A locking member on the cover plate, which may also comprise nonmetallic corrosion-resistant material, is movable between a locked position and an unlocked position. In the locked position, the locking member is adapted to engage the manhole frame at a second location in a manner that resists lifting of the cover plate proximate to such location. In the unlocked position, the locking member is disengaged from the manhole frame. | 04-12-2012 |
| 20120114414 | MANHOLE COVER AND METHOD FOR MANUFACTURING SAME - Provided are a manhole cover and a method for manufacturing same, wherein the manhole cover maintains a strength and weight the same as those of conventional manhole covers made of cast iron, eliminates the risk of theft, and achieves improved corrosion resistance and sealing properties. The manhole cover comprises: a base unit made of composite materials having compositions containing 12 to 18 wt % of glass fiber, 17 to 23 wt % of a polyester resin, with the remainder being calcium carbonate (CaCO | 05-10-2012 |
| 20120177440 | MANHOLE SAFETY GRATINGS - Systems and methods for making and using manhole safety gratings are described. Each safety grating includes a plate that has a first surface, a second surface, and a perimeter edge that extends between the two surfaces. The plate also defines a plurality of vents that extend between the first surface and the second surface. The plate can have any suitable shape or size that fits within the desired manhole. The plate can comprise any suitable material and be any suitable weight that provides the desired protection to the manhole. The safety gratings can therefore provide temporary safety for the manhole when they are used in place of permanent safety gratings. Other embodiments are described. | 07-12-2012 |
| 20120213581 | FASTENER FOR STREET IRONWORK, ASSEMBLY, STREET IRONWORK AND CORRESPONDING METHOD - The present fastener ( | 08-23-2012 |
| 20120251239 | INFLOW AND INFILTRATION CAP AND SEAL BARRIER - An apparatus and method is described for providing a water impenetrable barrier between a cone and support frame of a manhole system. The apparatus includes a barrier, cap, and seal that restricts the inflow and infiltration of water or other debris into the interior of the manhole system. The cap and seal barrier may be implemented in a sanitary sewer, catch basin or other manhole system. | 10-04-2012 |
| 20120263527 | COVER HAVING A WEAR-RESISTANT SURFACE AND METHOD FOR THE PRODUCTION THEREOF - The invention relates to a cast-iron cover fitted with at least one traffic-bearing surface which in turn comprises at least segment-wise a wear-resistant layer constituted by chilling the cast iron. Preferably the wear-resistant layer exhibits a Brinell hardness larger than 275 HBW but less than 350 HBW. A method of the invention furthermore relates to manufacturing a cast-iron cover, first manufacturing a shaped body. Then an activation layer is made within the shaped body. Cast iron is poured-in in a way to be at least partly chilled at a contact surface with the activation layer. | 10-18-2012 |
| 20130011194 | MANHOLE COVER OPTIMIZED FOR MANUFACTURING - A manhole cover is made of a fiberglass reinforced saucer-like shell that is filled with concrete. The interior surface of the shell is rough and the shell has a maximum thickness of 5 mm. An adhesive agent may be provided between the base and the filling, to obtain a reliable bond between base and filling. The concrete for the filling may be pure mineral concrete. One or more lifting handles are embedded in the filling. To this end, a recess for each handle is formed in the filling. The ends of the handle are embedded in the concrete and the lifting portion of the handle is curved upward and is held in the recess such that there is a space between the curved portion and the bottom of the recess, so that the handle may be easily grasped. | 01-10-2013 |
| 20130071183 | MANHOLE COVER SAFETY DEVICE - A manhole cover assembly includes a frame that includes a central opening and a safety stop portion, and a cover hingedly attached to the frame such that the cover is pivotable between a closed position covering the central opening and an open position providing access to the central opening. A safety device is connected to the frame and the cover for locking the cover in the open position. Movement of the cover to the open position automatically moves the safety device to a locked position in which said safety device engages the safety stop portion and prevents movement of the cover to the closed position. When the cover is open, the safety device is manually movable between the locked position and an unlocked position in which the safety device is disengaged from the safety stop and permits movement of the cover to the closed position. | 03-21-2013 |
| 20130089373 | SYSTEMS AND METHODS FOR VENTING GAS IN THE EVENT OF AN EXPLOSION IN A SPACE COVERED BY A MANHOLE COVER - A closure is adapted to limit damage from a gas explosion in an underground space. The closure includes a telescoping sleeve having a plurality of vents extending radially through the sleeve. The sleeve defines a manhole extending axially through the sleeve so a person can enter the underground space through the manhole. A manhole cover is moveable to a closed position in which the cover is supported on an upper end of the sleeve and covers the manhole. The sleeve can be received in an opening of a frame of a manhole installation so the sleeve is moveable by gas pressure to an extended position in which gas from the underground space can be vented through the sleeve to an aboveground space. If desired, the sleeve can be installed in an existing manhole installation to upgrade the installation to have an explosion mitigation capability without replacing the conventional manhole cover. | 04-11-2013 |
| 20130101347 | Storm Grate Locking Device - A locking device for a storm grate to prevent theft or vandalism by unauthorized individuals. The device typically includes an upper plate, a positioning frame, at least one coupler nut, and a bolt. The positioning frame can include the coupler nut, a catch end for engaging the frame of the grate, a lower plate for engaging the underside of the grate, and a pliers handle for holding the device during insertion through a drain opening. In one embodiment, a second coupler nut is part of a wing wedge that secures a lower plate of the positioning frame to the underside of the grate. A method of inserting the device includes lowering the device through an opening in the grate, securing the catch end around the frame beneath the ground, and then tightening the bolt. | 04-25-2013 |
| 20130108363 | Trench Cover | 05-02-2013 |
| 20130121763 | MANHOLE, ROADWAY AND WALKWAY REPAIR - A method for repairing roadway and pathway defects utilizes a filling material and a primer. The method calls for applying the primer to an edge of the defect; pouring the filling material into the defect; and curing the filling material to form a patch that is even with the road. | 05-16-2013 |
| 20130129418 | INFLOW DISH - A two piece inflow dish assembly for installation in an enlarged manhole opening to prevent debris from entering the manhole to clog the sewer system and to permit the inflow dish assembly to be removed from the manhole in separate pieces. | 05-23-2013 |
| 20130136537 | MANHOLE COVER MANUFACTURING PROCESS AND MANHOLE COVER THUS OBTAINED - A process for manufacturing a manhole cover having a thickness of at least 10 mm, and up to 80 mm, comprising the generation of a mixture of reagents able to generate a polymeric thermosetting material, the mixing of suitable reinforcement fibres, the introduction into an open mould of the mixture thus obtained, the closure of the mould with a suitable counter-mould, the hardening of the said mixture, the opening of the mould, and the removal of the manhole cover obtained. The process makes use of the co-injection of reagents for the generation of the polymeric thermosetting material and the reinforcement fibre. The present invention also describes a manhole cover obtained with the said process. | 05-30-2013 |
| 20140212216 | PICK HOLE GUARD FOR MANHOLE COVERS - Pick hole guards are provided for use in guarding pick holes on manhole covers. In some embodiments of the present invention, the pick hole guards can have a base, biasing member, and guard member. The biasing member can be attached to the base and guard member, and can bias the guard member toward a pick hole on the manhole cover to guard the pick hole. In other embodiments, the pick hole guards do not have movable guard members, but instead have retaining surfaces to serve as a receptacle for catching waste disposed through a pick hole. | 07-31-2014 |
| 20140270943 | MANHOLE AND SEWER BASIN COVER - A cover prevents asphalt, gravel and other debris from falling into the basin during construction or paving by covering the manhole cover or basin with a thin metal plate. The cover can be made in a size to match the size of the top of a basin frame and can include a central hole into which a metal shaft can be inserted to secure the cover into a center hole of a manhole cover, for example, to prevent the cover from moving. The cover can help environmentally during construction and paving by ensuring construction debris does not enter the sewer. Moreover, the cover helps makes paving around manholes easier. | 09-18-2014 |
| 20140286703 | UTILITIES ACCESS CLOSURE - A concrete lid for an in-ground utilities box includes a plastic reinforcement structure filled with concrete. The plastic reinforcement structure includes one or more plastic sidewalls that protect the edges of the lid from damage. The upper and lower surfaces of the lid are exposed concrete (with the exception of the upper and lower edges of the one or more plastic sidewalls). The one or more plastic sidewalls laterally surround a plastic reinforcement grid, which is centrally located between the upper and lower edges of the one or more plastic sidewalls. The one or more plastic sidewalls can be integrally formed with the plastic reinforcement grid. The plastic reinforcement grid reinforces the concrete lid, eliminating the need for separate reinforcement material. Support struts can be used to support the plastic reinforcement grid while wet concrete is being poured into the plastic reinforcing structure. | 09-25-2014 |
| 20140334876 | EXPLOSION MITIGATING COVER - A manhole cover assembly configured to behave as a relief valve in an explosion event, opening so that fluid, such as air or explosive gas, may vent from an underground area. The manhole cover assembly may include a manhole cover and a frame, and may be configured to limit movement of the manhole cover with respect to the frame in response to increased pressure on the manhole cover. In one embodiment, the manhole cover may include legs that are configured to enable a range of movement of a portion of the cover such that the cover can be unseated at an angle with respect to the frame to allow fluids to escape from the underground area. | 11-13-2014 |
| 20150104253 | Corrosion-Resistant Self-Locking Manhole Cover - A corrosion-resistant self-locking manhole cover includes a cover plate adapted to rest on a manhole cover support surface of a manhole frame so as to be substantially flush with a top portion of the frame and a surrounding surface. An anchor on the cover plate, which may comprise nonmetallic corrosion-resistant material, is adapted to engage the manhole frame at a first location in a manner that resists lifting of the cover plate proximate to such location. A locking member on the cover plate, which may also comprise nonmetallic corrosion-resistant material, is movable between a locked position and an unlocked position. In the locked position, the locking member is adapted to engage the manhole frame at a second location in a manner that resists lifting of the cover plate proximate to such location. In the unlocked position, the locking member is disengaged from the manhole frame. | 04-16-2015 |
| 20150376860 | LID FOR UNDERGROUND STRUCTURE - An inner peripheral portion of a receiving frame includes: a receiving-frame first surface part with a gentle gradient, and a receiving-frame second surface part which is formed below the receiving-frame first surface part and with a steeper gradient than that of the receiving-frame first surface part by reducing its diameter toward a downward direction of the receiving frame, and an outer peripheral portion of a lid body includes: a lid first surface part with a gentle gradient; and a lid second surface part which is formed below the lid first surface part and either vertically toward a downward direction of the lid body, or with a steeper gradient than that of the receiving-frame second surface part by reducing its diameter toward the downward direction of the lid body, in which in a closed-lid state of the lid body, the lid first surface part is supported by the receiving frame first surface part, and the lid second surface part and the receiving-frame second surface part are pressed against each other by a pressing force caused by elastic deformation of at least one of the outer peripheral portion of the lid body and the inner peripheral portion of the receiving frame. | 12-31-2015 |
| 20160053457 | Controlled Pressure Release Manhole Cover Assembly - A manhole cover assembly includes a manhole cover and a latch assembly. The manhole cover is movable between a seated position in which the manhole cover is supported on a seat of a manhole frame, and an unseated position in which the manhole cover is displaced relative to the seat of the manhole frame. A shock absorber includes a housing fixedly coupled to the manhole cover. The housing defines a cylinder. A piston is slidably coupled to the cylinder. A rod is fixedly coupled to the piston. A spring is positioned within the cylinder adjacent the piston. A latch is fixedly coupled to the rod. In response to a pressure applied to the manhole cover, the latch assembly is configured to permit limited displacement of the manhole cover relative to the seat of the manhole frame, and to controllably dissipate energy relating to the pressure. | 02-25-2016 |
| 20160053458 | Pressure Responsive Locking Latch Arrangement For Manhole Covers - A manhole cover assembly including a pair of perimeter lugs attached by a mounting to the underside of the manhole cover engaging a feature on a vault frame having an opening receiving the manhole cover upon rising up of the manhole cover in response to development of a pressure condition in the vault in order to relieve the pressure at least one of the lugs mounted to a pivotal member accessible from above the cover to be able to be rotated to rotate a projecting portion to either be aligned with a stop feature on the frame opening which is engaged when the cover rises up or to clear the stop feature allowing removal of the cover. | 02-25-2016 |
| 20160108601 | Method and device for installing or renovating a basin - A method is described for installing or renovating a basin in relation to a surface, wherein the basin includes at least a basin body ( | 04-21-2016 |
| 20160168818 | SAFE MAINTENANCE INDUSTRIAL COVERS | 06-16-2016 |
| 20190145079 | MANHOLE COMPRISING A DEVICE FOR SAFETY CLOSING AND LOCKING THE MANHOLE | 05-16-2019 |
| 404026000 | Elevation or level adjustment | 18 |
| 20080267702 | Manhole leveler - An apparatus that automatically levels a manhole upon placement of the manhole in the road. The preferred embodiment includes a support beam, two clamping units and two carrying handles. The clamping units contact the top of the manhole and clamp the manhole to the bottom of the support beam. The carrying handles assist in placing the manhole in the road and aligning the support beam on top of the road. The road surface forces the bottom of the support beam to align with the road. Since the top of the manhole is clamped to the bottom of the support beam, the manhole is also forced to align with the new road surface. The present manhole leveler works on roads with steep inclines and banking. | 10-30-2008 |
| 20090214292 | Encapsulated manhole cover - Embodiments of the present invention relate to a cover for a manhole or similar structure that encapsulates a traditional cover so as to extend the height of the cover. Generally, a conventional manhole cover is partially or entirely encapsulated in polyurethane to change its outside dimensions to match the environment of an intended location. | 08-27-2009 |
| 20090290934 | THERMALLY AND ELECTRICALLY INSULATED COMPOSITE MANHOLE COVERS - A manhole cover includes a support having an upper surface and a peripherally-extending portion. An outer insulating member is disposed over the entire upper surface of the support, and the support comprises a first material and the outer insulating member comprises a second material different from the first material. The peripherally-extending portion of the support is positionable over the lip of the manhole ring. The outer insulating member is positionable between the upper surface of the support and the upper surface of the rim of the manhole ring when the manhole cover is received in the manhole ring. In one aspect, the support comprises cross-members defining a grate having passageways through the support. In another aspect, the support comprises metal, and the outer insulating member comprises a composite of resin, reinforcement fibers, and stone aggregate. In another aspect, screen inserts are disposed in a plurality of passageways in the outer insulating member. | 11-26-2009 |
| 20090297265 | B-W manhole cover-cover - Depressed manhole covers affect vehicles negatively. The B-W Manhole Cover-Cover is a recycled rubber disc attached to the existing manhole cover with toggle-bolts. It will provide proper elevation. | 12-03-2009 |
| 20090324329 | Manhole Cover for Preventing Inflow of Bad Smell and Harmful Insect - A manhole cover for preventing the inflow of a bad smell and a harmful insect is provided. More particularly, the manhole cover includes a manhole top plate that has a plurality of drainage holes and a display part; a drainage guide plate that is integrally formed in a bottom part of the manhole top plate; a gate that is provided in a front end exit of the drainage guide plate and that is closed by a weight; and walls that are vertically and integrally formed in four edges of the manhole top plate. The display part, which is provided in one side of the manhole top plate can perform a specific display such as a trademark, a firm name, a logo, a slogan. The gate can be fully opened or closed within a space part by forming the space part in a lower part of the display part. | 12-31-2009 |
| 20100124458 | Integrated frame and cover system - A system and method are provided for coupling a manhole cover to an underground utility box to support the manhole cover substantially flush with a ground surface such as a roadway. A holder couples to an underground utility box and includes upper and lower ends and a channel extending therebetween, and a support structure extending into the channel and defining an upwardly facing support surface. An adjustment member for coupling to a manhole cover is inserted within the channel, and includes upper and lower ends, and a passageway extending therebetween and communicating with the channel. The adjustment member is movably receivable within the channel to be seated on the support surface, and to define an adjustment space between the adjustment member and the holder. The adjustment member may thus be adjusted for accommodating a slope and elevation of a ground surface, and sealed with the holder after adjustment. | 05-20-2010 |
| 20100178106 | METHOD AND APPARATUS FOR RAISING MANHOLE CASTINGS - The specification discloses apparatus and a process in which the stack of concrete or hard rubber spacer rings used in raising manholes is eliminated. It is replaced with a sleeve which is taller than the required distance between the top of the manhole and the level at which the casting and manhole cover are to be finally located, but which is sufficiently flexible in a vertical direction that when a casting is located in the top of the sleeve, the sleeve compresses downwardly. The height of the casting is fixed by a casting support resting on the pavement base coat or other base surface to which the final pavement will be applied around the casting. The sleeve is sufficiently stiff in a lateral direction that it does not collapse inwardly when backfill is packed in and around the exterior of the sleeve. The casting support is removed and the final layer of pavement is applied over the base surface. | 07-15-2010 |
| 20110222964 | HIGHWAY DEVICE, IN PARTICULAR MANHOLE, WITH FRAME AND PLUG WITH BACKWARD MOVEMENT RELATIVE TO THE FRAME TO ENSURE THE CLOSED POSITION OF THE PLUG IN THE FRAME - A manhole includes a frame and plug, which moves backward relative to the frame, to ensure the plug reaches a proper closed position in the frame. A first end of a self-locking arm of the structure is pivotally mounted to the frame, and can slide in a fixed guiding groove. The first end of the arm bears on a fixed stop of the frame during tilting of the plug toward the closed position of the frame. The arm moves the plug backwards and so the plug correctly closes the opening of the frame. | 09-15-2011 |
| 20110243658 | Apparatus and method for repairing an existing spill containment manhole - An apparatus for repairing an existing spill containment manhole operably associated with an underground fuel storage tank. The apparatus includes a containment vessel for containing fuel spilled during filling of the underground fuel storage tank. A major portion of the containment vessel is adapted to be inserted into an existing spill containment manhole. The containment vessel includes at least one wall that surrounds an existing pipe section operably associated with the underground fuel storage tank when the containment vessel is installed. The at least one wall has an inner surface and an outer surface. Preferably, the containment vessel includes an upper annular flange that extends over and surrounds a portion of an existing cover rim of an existing spill containment manhole thereby isolating an upper portion of the containment vessel from an upper portion on the existing spill containment manhole when the containment vessel is installed. Optionally, a replacement cover is provided to replace an existing cover of the existing spill containment manhole. The replacement cover may include at least one sealing member that engages the inner surface of the at least one wall of the containment vessel when installed. The containment vessel may also include a drain assembly for selectively draining fuel collected in the containment vessel back into the underground fuel storage tank. Preferably, the containment vessel includes a compact seal assembly for providing a fluid tight seal around an existing fill port. | 10-06-2011 |
| 20130101348 | ADJUSTABLE GRATE FRAMES - An adjustable frame configured to receive a standard grate includes a plurality of threaded openings that may be threadably engaged with bolts to adjust an elevation of the frame. The threaded openings may be configured to have a desired thread pitch, which in turn dictates how much the frame may be lowered or raised with one full turn of the bolt. Optionally, threaded bushings may be installed into the frame to engage with the bolts. | 04-25-2013 |
| 20130195549 | INCLINED MANHOLE COVER RISER ASSEMBLY - A riser assembly and method for engaging the same to raise a manhole cover to be flush with an inclined paved surface after the application of an additional layer of paving material thereto. The riser assembly includes a first and second riser frame with a plurality of specially manufactured spacer blocks fixedly secured between them. The spacer blocks have progressively different height dimensions and sloped upper surfaces so as to create an angle between the first and second riser frames. The angle is complementary to the slope of the paved surface. The riser assembly includes an expansion device for adjusting the diameter of the second riser frame so that it frictionally engages the existing manhole frame. The fixed securement of the spacer blocks prevents relative movement between the first and second riser frames even when the diameter of the second riser frame is changed. | 08-01-2013 |
| 20140037374 | INTEGRATED FRAME AND COVER SYSTEM - A system and method are provided for coupling a manhole cover to an underground utility box to support the manhole cover substantially flush with a ground surface such as a roadway. A holder couples to an underground utility box and includes upper and lower ends and a channel extending therebetween, and a support structure extending into the channel and defining an upwardly facing support surface. An adjustment member for coupling to a manhole cover is inserted within the channel, and includes upper and lower ends, and a passageway extending therebetween and communicating with the channel. The adjustment member is movably receivable within the channel to be seated on the support surface, and to define an adjustment space between the adjustment member and the holder. The adjustment member may thus be adjusted for accommodating a slope and elevation of a ground surface, and sealed with the holder after adjustment. | 02-06-2014 |
| 20140169876 | EXPLOSION MITIGATING COVER - A manhole cover assembly configured to behave as a relief valve in an explosion event, opening so that fluid, such as air or explosive gas, may vent from an underground area. The manhole cover assembly may include a manhole cover and a frame, and may be configured to limit movement of the manhole cover with respect to the frame in response to increased pressure on the manhole cover. In one embodiment, the manhole cover may include legs having angled surfaces adapted to substantially center or guide the manhole cover in the frame while the manhole cover displaces to release pressure. In another embodiment, one or more legs slidable within the manhole cover to enable configuring the manhole cover between a restraint mode and a removal mode. | 06-19-2014 |
| 20140328622 | MANHOLE RISER EXTENSION ASSEMBLY - A manhole riser extension assembly including separate upper and lower spacer rings which are assembled utilizing tabs that extend downwardly from the upper spacer ring about the lower spacer ring, and locking elements in association with the lower ring that cooperatively engage and bear radially outwardly against the tabs, respectively, to urge and/or lock the tabs against an inner surface of the manhole frame bounding the manhole cover seat, or to penetrate the tabs and bear against the inner surface, to hold the assembly together and in place in the manhole frame, and such that a manhole cover is positionable in sitting relation on the lower spacer ring, bounded by the upper spacer ring for covering the manhole. Optional lift protections tabs can be provided at locations about the upper spacer ring, in position to be covered by paving material to supplement the holding of the assembly in place. | 11-06-2014 |
| 20150104254 | MANHOLE MARKER - A portion of a street surface to be removed for access to a manhole cover is defined by placing a design mask on the street with a cutout overlying an electronic marker embedded in the street proximate the manhole. The design mask is oriented such that a larger cutout overlies the manhole cover, by aligning the design mask along an established direction. The design mask can be a template with a circular cutout, or a stencil with a ring cutout. When the marker is located proximate a curb line, the established direction may correspond to a normal from the curb line. A rectangular design mask can be oriented by keeping an edge of the design mask which is closest to a curb line parallel with the curb line. Alternatively, a compass heading may be used, and a pointer feature of the design mask can be aligned with the compass heading. | 04-16-2015 |
| 20160097180 | MANHOLE AND A METHOD FOR PROVIDING A MANHOLE - A manhole ( | 04-07-2016 |
| 20160177535 | ADJUSTABLE MANHOLE COVER | 06-23-2016 |
| 20190145078 | ADJUSTABLE MANHOLE COVER | 05-16-2019 |
