| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 254278000 | Plural drums or drum with plural distinct sections | 46 |
| 20110108786 | AXIAL DISPLACEMENT DEVICE, LINE DEPLOYMENT SYSTEM, AND A METHOD FOR DEPLOYING A LINE - The invention relates to an axial displacement device ( | 05-12-2011 |
| 20120061634 | METHOD AND APPARATUS FOR REEVING A HOISTING CABLE - The invention relates to a method and to an apparatus for reeving a hoisting cable of a crane, wherein the load to be transported can be suspended from a lower hook block ( | 03-15-2012 |
| 20140117296 | SYSTEM AND METHOD FOR PLACING A TARPAULIN OVER A LOAD - A system is mounted onto a forklift truck for covering and/or uncovering a cargo with a tarpaulin. The system comprises a tube frame assembly having a telescoping frame slidably attached to it. The telescoping frame is configured to be capable of being extendable and/or retractable within the tube frame assembly. The telescoping frame comprises a plurality of rollers configured to be capable of rotating when engaged with the plurality of flexible members and the flexible cover. A powertrain device is installed onto the tube frame assembly for causing to retract and/or to extend the telescoping frame within the tube frame assembly. A winch assembly is configured to be coupled to the tube frame assembly and having a plurality of straps engaged with the tarpaulin to cover and/or uncover the cargo. | 05-01-2014 |
| 20150144851 | NESTED LIFT ASSEMBLIES - A lift assembly that includes a base having a first side and a second side opposite the first side. The base defines an outlet positioned closer to the first side than to the second side. The lift assembly further includes a take-up mechanism mounted to the base, and a cable having a stored portion on the take-up mechanism and a free portion extending from the take-up mechanism through the outlet. | 05-28-2015 |
| 254279000 | With vehicle for supporting at least one drum | 8 |
| 20090261311 | MULTI-LINE, MULTI-FUNCTION YACHT WINCH - A multi-function winch for handling multiple lines of the running rigging of a sailing yacht. The winch incorporates multiple winch drums capable of releasing, retrieving and storing working lines of the yacht. The multiple winch drums are mounted in an axially stacked relation on a single drive shaft. Individual ones of the drums can be engaged to be driven by the main shaft of the winch, while the others remain stationary or, where appropriate, free wheel and controllably release lines stored thereon. A rotatable selector lever, located at the top of the winch, is manipulated to engage a selected drum for driven operation. Level wind features can also be provided to assure neat and compact winding of retrieved lines. | 10-22-2009 |
| 20130146827 | Shipboard Winch With Guide Vanes - A shipboard winch having guide vanes includes a first drum and a second drum that are mounted on a frame so that the drums contra-rotate when the winch is activated. A plurality of guide vanes is positioned between the first drum and the second drum. Each guide vane is formed with a base and a distal lip that extends outwardly from the guide vane when the guide vane is oriented horizontally. The guide vanes are further formed with a decreasing taper from a maximum width at the base to a minimum width at the distal lip. For deployment/recovery, the cable is threaded around the first drum, through the guide vanes and around the second drum in a figure eight configuration. A feedback circuit is used to control the rotational torque of the drums to maintain a constant tension on a cable as it is deployed or retrieved. | 06-13-2013 |
| 20150321890 | A CHAIN AND CABLE HANDLING WINCH SYSTEM AND A METHOD FOR CHANGING A CHAIN WHEEL - The invention relates to a chain and cable handling winch system ( | 11-12-2015 |
| 254280000 | Having rotatable, cable guiding, pulley wheel element spaced from drums | 5 |
| 20140124718 | COMPENSATION OF MEASURING ERRORS IN HANDLING EQUIPMENT - A method is provided for compensating measuring errors for handling equipment with a drive carrier that includes a carrier part and driven drums for moving the steel cables arranged thereon and including a handling receptacle in which the handling receptacle is suitable for picking up loads and is connected to the carrier part by deflection pulleys via the support cables a id a controllable lever mechanism that is at least connected to at least two support cables and with at least two force sensors that capture the forces of at least two support cables and a monitoring device that monitors the forces of the at least two force sensors. An adjustment angle of the controllable lever mechanism is captured by sensors and a correction of the cable forces based on the captured adjustment angle is carried in the monitoring device. | 05-08-2014 |
| 20140252285 | Side Recovery Boom Apparatus for Tow Truck - A side recovery boom for a tow truck, which is attached to a chassis of the tow truck, includes a frame, a boom, a stabilizer arm, and a winch system. The boom which extends in and out of the frame is telescopically connected with a boom track of the frame by a boom hydraulic cylinder, and the stabilizer arm which also extends in and out of the frame is telescopically connected with a stabilizer track of the frame by a stabilizer hydraulic cylinder. The boom allows the frame to be extended so that the immobilized vehicles can be towed from the side of the tow truck while the stabilizer arm counters the moment of rotation created by the boom. The winch system provides the necessary towing power to retrieve the immobilized vehicle as the winch system, the boom, and the stabilizer arm are operated though a control panel. | 09-11-2014 |
| 254281000 | Element repositionable relative to at least one of the drums | 3 |
| 20100181542 | SAILBOAT WINCH WITH SELF-STORAGE OF WORKING LINE - A power or manually operated winch mechanism for handling the running rigging lines of a sailing yacht. The winch includes a winding drum, operating in conjunction with a level wind mechanism. A special, manually operated line release clutch allows controlled release of line independently of the power or manual drive mechanisms of the winch, providing for quick release under emergency conditions as well as for a convenient, manually controlled release for sail control purposes. During line release by power or manual rotation of the winding drum, the line is tensioned by the level wind mechanism and thus positively drawn from the unwinding winch drum The arrangement enables lines to be automatically released from one winch and retrieved on a second winch, under a common control, as when tacking or resetting sails, without any physical line handling by crew members, with resulting improvement in the safety and convenience of the crew. | 07-22-2010 |
| 20110042633 | Unified Remote Control Operation Of Yacht Winches - A power operated winch mechanism for handling the running rigging lines of a sailing yacht. The winch includes a winding drum, which winds and stores the line during line retrieving operations and controllably releases the line when desired. A pair of the new winches can be controllably operated using a portable or fixed control device, with one winch controlled to retrieve one line while another winch controllably releases line in a coordinated procedure. Among other things, such coordinated operations can be useful in carrying out tacking and gybing maneuvers without crew involvement in line handling operations. Novel level wind features enable the lines to be appropriately tensioned during retrieval, and positively drawn from the drum when the line is not under load. Significant improvement in the safety and convenience of the crew is enabled. | 02-24-2011 |
| 20110278520 | METHOD AND DEVICE FOR HANDLING OF ROPE - A rope handling system for an offshore vessel for handling of synthetic rope ( | 11-17-2011 |
| 254283000 | Having rotatable, cable guiding, pulley wheel element spaced from drums | 13 |
| 20100200821 | DUAL CAPSTAN PULLER AND METHOD - A puller is provided with a number of advantages. Pullers are described that have a high power to weight ratio, and a high power to volume ratio. Examples of pullers and pulling systems include harmonic drive gear reduction elements and configurations that provide high cable friction in a small device volume. Examples of pullers and pulling systems also include constant force pulling which is desirable in particular for small diameter pipe replacement. Using pullers and pulling systems as described, minimally invasive pipe replacement operations are possible. Reversible pullers are also provided that decrease the amount of time needed to burst or split multiple segments of pipe. | 08-12-2010 |
| 20110233494 | DUAL CAPSTAN PULLER AND METHOD - A puller is provided with a number of advantages. Pullers are described that have a high power to weight ratio, and a high power to volume ratio. Examples of pullers and pulling systems include harmonic drive gear reduction elements and configurations that provide high cable friction in a small device volume. Examples of pullers and pulling systems also include constant force pulling which is desirable in particular for small diameter pipe replacement. Using pullers and pulling systems as described, minimally invasive pipe replacement operations are possible. Reversible pullers are also provided that decrease the amount of time needed to burst or split multiple segments of pipe. | 09-29-2011 |
| 20110260126 | WINCHING APPARATUS AND METHOD - A winching apparatus and method for winching a load are disclosed which are particularly suitable for, though not exclusively limited to, use with heave compensated hoists or cranes, for example, on a floating structure such as a vessel. The winching apparatus comprises a first winch, a second winch, a winch line, at least one sheave or guide, a winch line cycling means and a load connection means, wherein the load is connectable to the load connection means, the winch line extends from the first winch round the at least one sheave or guide to the second winch and the winching apparatus is configured to transfer winch line between the first and second winches while the winch line cycling means cycles winch line backwards and forwards round the at least one sheave or guide. | 10-27-2011 |
| 20120298937 | MULTIDIMENSIONAL POSITIONING SYSTEM AND METHOD - A multidimensional positioning system including a first block assembly including a fixed first block portion and a moveable second block portion. A first travel cable is arranged on pulleys operatively connected to the first block portion, the second block portion and a predetermined location. The first travel cable is affixed to a base supporting a load. A first travel drive is operatively connected to the first travel cable to facilitate movement of the base in a second travel direction. A first lift drive is arranged and disposed to provide movement of the second block portion relative to the first block portion to selectively alter the length of the first travel cable in a working space and selectively move the base in a first travel direction. | 11-29-2012 |
| 254284000 | Element repositionable relative to at least one of the drums | 3 |
| 254285000 | Plural elements | 3 |
| 20110127477 | HOIST SYSTEMS - A hoist system includes a drive system and a shaft in rotatable connection with the drive system. The hoist system also includes a flexible first hoist member operatively connected to the shaft at a first longitudinal position thereon so that it can be wound around the shaft or unwound from around the shaft upon rotation of the shaft. The first hoist member extends from the shaft in a first direction. The hoist system also includes at least a second flexible hoist member operatively connected to the shaft at the first longitudinal position so that it can be wound around the shaft or unwound from around the shaft upon rotation of the shaft. The second hoist member extends from the shaft in a second direction, different from the first direction, so that the first hoist member and the second hoist member are wound around the shaft upon rotation of the shaft in a first or forward direction and are unwound from around the shaft upon rotation of the shaft in a second or reverse direction. The first hoist member and the second hoist member are wound on top of each other when the shaft is rotated in the forward direction. The hoist system also includes a first guide member spaced from the drive shaft on a first side of the drive shaft. The first hoist member passes around at least a portion of the first guide member and extends downward to be operatively connectible to an object to be hoisted. The hoist system further includes a second guide member spaced from the drive shaft on a second side of the drive shaft. The second side is different from the first side. The second hoist member passes around at least a portion of the second guide member and extends downward to be operatively connectible to an object to be hoisted. | 06-02-2011 |
| 20110163286 | Tab Winch for Stage Use - A winch with adjustable arms allowing the length to be adjusted. The winch can have a very thin drum to allow it to fit in confined spaces. | 07-07-2011 |
| 20120145979 | HOIST SYSTEM AND METHOD OF HOISTING - A hoist system comprises a first line ( | 06-14-2012 |
| 254286000 | Plural elements | 6 |
| 20090315006 | Tab Winch for Stage Use - A winch with adjustable arms allowing the length to be adjusted. The winch can have a very thin drum to allow it to fit in confined spaces. | 12-24-2009 |
| 20100051888 | Self-Contained Self-Elevating Platform Lift - In one embodiment, a self-elevating platform lift for moving objects between a first level and a vertically-elevated second level is provided. The platform lift comprises: (A) a platform for supporting the objects; (B) a plurality of lift lines for connection at the second level and for moving the platform; and (C) a motor connected to move with the platform and wherein the motor operably is connected to the lift lines for moving the platform between the first and second levels while being supported by the lift lines. In another embodiment, a lift installation is provided for moving objects between a first level and a vertically-elevated second level comprising: (A) a platform for supporting the objects; (B) a plurality of lift lines fixed at one end to extend downward from the second level for moving the platform; and (C) a motor connected to move with the platform and wherein the motor operably is connected to the lift lines for use in moving the platform between the first and second levels while being supported by the lift lines. | 03-04-2010 |
| 20100308290 | Multi-Reeve Handling and Hoisting System - An integrated hoisting system includes a base structural component (BSC) assembled on a structural aperture and containing an opening compatible with a structural aperture. The integrated hoisting system further includes a plurality of primary hoisting components affixed to the BSC, wherein each primary hoisting component is disposed in an opposite diagonal corner on said BSC, and further includes a winch drum and at least one lead sheave and a plurality of load path assemblies, each containing a plurality of sheaves. The system further includes a plurality of hoisting lines, a plurality of termination components affixed to said BSC, each termination component including a monitoring unit and a load cell assembly for terminating the hoisting line, and a device configured to control the operation of the integrated hoisting system. | 12-09-2010 |
| 20110001101 | MODULAR LIFT ASSEMBLY - A modular lift assembly includes a frame, at least one head block connected to the frame, a drum rotatably connected to the frame about an axis of rotation and having at least one winding section, and a drive mechanism operatively connected to the drum for rotating the drum. In various examples, the lift assembly includes at least one loft block internal or external relative to the frame. The loft block is configured to guide a cable from the at least one head block to a load. The lift assembly can further include a load brake positioned along the axis of drum rotation to reduce risks associated with a drive or motor failure. | 01-06-2011 |
| 20110042634 | TETHER HOIST SYSTEMS AND APPARATUSES - A rigging system for raising and lowering a load includes at least one tether suspended between first and second spaced apart connection points. A hoist apparatus is selectively movable along the at least one tether and is coupled to the load so that movement of the hoist apparatus causes the raising and lowering of the load. The hoist apparatus can include drive pulleys and guide pulleys. A connection apparatus for connecting a tether to a fixed surface includes a base plate, a spring mechanism, at least at least one end plate, and a bushing member coupling the second end of the spring mechanism to the end plate. Tension on the tether causes the spring mechanism to compress and reduce distance between the end and base plates. | 02-24-2011 |
| 20160137466 | System for Hoisting a Load on an Offshore Rig - There is described a system for hoisting a load on an offshore rig, the system comprising
| 05-19-2016 |
| 254287000 | Juxtaposed to cable at single locus | 1 |
| 20130020544 | WINCH APPARATUS - A winch apparatus ( | 01-24-2013 |
| 254288000 | With means affixing at least one drum to supporting base and allowing movement between drum and base | 1 |
| 20150008381 | ROPE WINCH - The present invention relates to a hoisting winch, in particular to a hoisting gear winch, having a hoisting drum whose winding region is bounded by two lateral flanged wheels, wherein at least one further flanged wheel is provided between the lateral flanged wheels for dividing the winding region into at least two part winding regions, wherein the cable can be guided beyond the named further flanged wheel into the at least two part winding regions. It is suggested in accordance with the invention to move the hoisting drum and/or a transverse cable guide arranged in front of the hoisting drum transversely to the longitudinal direction of the running in/running off cable approximately in the longitudinal direction of the drum and/or to adjust the angular position of the hoisting drum transversely to the longitudinal direction of the drum with respect to at least one transverse axis. | 01-08-2015 |
| 254290000 | Plural, distinct, drive motors | 5 |
| 20100224844 | WINCH FOR PULLING CABLES, IN PARTICULAR SYNTHETIC CABLES USED OFFSHORE | 09-09-2010 |
| 20130270499 | PULLING DEVICE AND METHOD THEREFOR - A puller is provided with a number of advantages. Pullers are described that have a high power to weight ratio, and a high power to volume ratio. Examples of pullers and pulling systems include configurations that provide high cable friction in a small device volume. Examples of pullers and pulling systems also include constant force pulling which is desirable in particular for small diameter pipe replacement. Using pullers and pulling systems as described, minimally invasive pipe replacement operations are possible. Reversible pullers are also provided that decrease the amount of time needed to burst or split multiple segments of pipe. | 10-17-2013 |
| 20150034893 | Scissor-Type Lift Assembly - The subject invention includes a lift system including a first scissor-type lift assembly and a second scissor-type lift assembly spaced from the first scissor-type lift assembly. The first scissor-type lift assembly includes a first base and a first platform coupled to the first base for movement between elevated and lowered states. The first scissor-type lift assembly includes a first motor operatively mounted to the first base. The second scissor-type lift assembly includes a second base and a second platform coupled to the second base for movement between elevated and lowered states. The second scissor-type lift assembly includes a second motor operatively mounted to the second base. The first and second motors move the first and second platforms between the elevated and lowered states. The lift system includes a controller in communication with the first and second scissor-type lift assemblies to synchronize operation of the first and second motors. | 02-05-2015 |
| 20150115211 | PULLING DEVICE AND METHOD THEREFOR - A puller is provided with a number of advantages. Pullers are described that have a high power to weight ratio, and a high power to volume ratio. Examples of pullers and pulling systems include configurations that provide high cable friction in a small device volume. Examples of pullers and pulling systems also include constant force pulling which is desirable in particular for small diameter pipe replacement. Using pullers and pulling systems as described, minimally invasive pipe replacement operations are possible. Reversible pullers are also provided that decrease the amount of time needed to burst or split multiple segments of pipe. | 04-30-2015 |
| 254292000 | Electric | 1 |
| 20110121247 | FAULT MONITORING SYSTEM FOR ELECTRIC SINGLE OR POLY-PHASE CHAIN HOIST MOTORS - Single networkable fault monitoring system for monitoring electrical parameters on at least one electrical phase on at least one interconnected electric chain hoist for various fault conditions. When at least one fault signal is generated, at least one kill signal is generated in the fault monitoring system, causing generation of at least one kill function in at least one chain hoist motor controller. The generated kill function causes a power disconnection to all connected electric chain hoists and/or the entire network of fault monitoring systems. When a fault has been generated, each individual fault signal outputs fault specific diagnostic data from the fault monitoring system to help an operator identify the fault specific electric chain hoist(s) and the specific fault type(s). This data is intended for the purpose of interfacing with an operator monitoring device, LED indicators, data logger, and/or any other user-defined application or combination thereof. | 05-26-2011 |
| 254293000 | Each drum having plural, distinct drive sources or discrete drive trains | 1 |
| 20090242861 | POWER CABLE - A winch system with a force cable that transmits electrical current and/or digital data to the load. For example, the force cable, including a power line and/or a signal line and includes at least: (i) a first portion extending from the load to the drum; and (ii) a second portion that is wound around the drum. If there is a power line in the force cable it is electrically connected to an electrical commutator by a rotating current path. If there is a signal line in the force cable it is connected in data communication to a data signal commutator by a rotating communication path. The commutator also has an input for receiving electrical current and/or digital data, as appropriate. The commutator transmits the electrical current and/or digital data from its input to the rotating current path and/or communication path. The drum defines an axial channel extending from at least one end of the drum along its axial direction, and current path(s) and/or communication path(s) are routed through the channel. There is a distribution box at a first axial end of the drum and the commutator is at the second axial end of the drum. The drum includes at least one radial channel that includes: (i) a first portion for receiving a force bearing member of the force cable from outside of the drum; and (ii) a second portion for guiding at least a portion of the current path(s) and/or the communication path(s) from outside of the drum to the axial channel. | 10-01-2009 |
| 254294000 | Having common drive source or mechanically interlinked drive trains | 13 |
| 20160176682 | DEVICE FOR HOISTING AND CONTROLLING LOADS | 06-23-2016 |
| 254295000 | Including intermeshing gears in drive | 5 |
| 20120074365 | POWER WINCH - A power winch for retrieving a load using a strap comprising: a motor, where the motor includes a drive shaft, where the drive shaft extends from the motor and a gear coupling at the end of the drive shaft; at least one gear reducer; at least one drive shaft, where said drive shaft engages the at least one gear reducer; a gear extension in each drive shaft; and four rollers that engage the gears of the at least one drive shaft where the rollers are designated as a first top roller, the second top roller, a first bottom roller, and a second bottom roller, where the first top roller and first bottom roller are aligned in a first vertical plane and a second top roller and second bottom roller are aligned in a second vertical plane. The four rollers are positioned at four different respective vertical heights. A strap interweaves through the four rollers that allows for the movement of the strap through the rollers powered by the motor. In one exemplary embodiment, the power winch further includes a winch drum, where the winch drum is used to collect the strap that is interweaved through the four rollers. | 03-29-2012 |
| 20130200318 | CABLE LIFTING APPARATUS - The invention relates to a cable-based lifting device intended to move loads using multiple cables ( | 08-08-2013 |
| 254297000 | Epicyclic gear train having sun, intermediate (e.g., planet), and ring gears | 1 |
| 20110147684 | TRACTION WINCH - This invention relates to a traction winch for a cable ( | 06-23-2011 |
| 254299000 | Also including clutch mechanism having coaxial, rotatable, relatively shiftable axially, power transmitting components | 1 |
| 254300000 | With frictional brake assembly mechanically linked to, and operationally influenced by, clutch | 1 |
| 20090045381 | MODULAR LIFT ASSEMBLY - A lift assembly having a drum rotatably mounted to a frame and linearly translatable with respect to one or more portions of the frame. A plurality of head blocks can be connected to the frame along a helical mounting path, wherein linear translation of the drum during takeoff or take-up can maintain a predetermined fleet angle between a take off point from the drum and the head block. | 02-19-2009 |
| 254310000 | With means for preventing or retarding rotation of one or more drums in at least one direction | 1 |
| 20150375975 | TRACTION WINCH - A traction winch for winching an elongated article having a high-tension end connectable to a load and low-tension end connectable to a storage device includes two or more rotatable drums arranged adjacent to each other with their rotational axes substantially parallel, each of them having a plurality of parallel, circumferential sheaves with groove, the sheaves being axially offset with respect to each other to allow wrapping of the elongated article around the sheaves of both drums in a spiral fashion. The sheaves includes fixed sheaves, stationary relative to their underlying drum, and rotatable sheaves, rotatable relative to their underlying drum. The majority of the rotatable sheaves of at least one of the drums is arranged adjacent to each other on a high load supporting side of the winch and the rotational velocity of at least one of the rotatable sheaves is reducible by means of at least one braking device. | 12-31-2015 |
| 254316000 | Including electric motor in drive | 2 |
| 20090140221 | Theater Rigging System - A theater rigging assembly having a beam, which is attached to structural support members of a theater or other performing arts venue. The assembly further includes a winch assembly and head block that can be positioned at any point along the beam and selectively fixed in position. The winch portion includes cables for raising and lowering battens or other loads. The head block includes head sheaves, which redirect the cables to loft sheaves that are selectively attached to the beam. The head sheaves are diagonally displaced to separate the cables. The winch portion includes a motor, a gear box, a drum and a brake. The brake includes a ratchet and two brake disks. It uses at least one friction surface that contacts at least one of the brake disks to cause a pawl to engage or disengage from the ratchet. | 06-04-2009 |
| 20150144852 | LIFT ASSEMBLY WITH TAPERED DRUMS - A lift assembly including a base, a drive mechanism, and a drum assembly adapted to be driven by the drive mechanism. The drum assembly includes first and second drum segments positioned adjacent each other, each drum segment including a small diameter portion, a large diameter portion, and a tapered portion between the small diameter portion and the large diameter portion. The lift assembly further includes first and second flexible drive elements at least partially wrapped around the small diameter portions of the first and second drum segments, respectively. | 05-28-2015 |
| 254317000 | Including clutch mechanism in drive having coaxial, rotatable, relatively shiftable axially, power transmitting components | 3 |
| 20140217341 | MARINE VESSEL WINCH EQUIPPED WITH HERMETICALLY SEALED CLUTCH - The present invention relates to a marine vessel winch equipped with hermetically sealed clutches including: a support plate on which a plurality of support frames is disposed; a rotary shaft rotatably coupled to the support frames; a rope drum having a first fixing clutch mounted on one side thereof; a chain drum having a second fixing clutch mounted on one side thereof; a first moving clutch and a second moving clutch coupled slidably movably to the rotary shaft and selectively engaged with the first fixing clutch and the second fixing clutch; and sealing members having one side surfaces coupled in circumferential directions to predetermined positions of the outer peripheral surfaces of the rope drum and the chain drum and having the lower portions of the other side surfaces brought into contact with the outer peripheral surfaces of the first moving clutch and the second moving clutch. | 08-07-2014 |
| 20150368076 | Coupling Device - The invention relates to a plugging device for releasably connecting the drum wheel ( | 12-24-2015 |
| 254318000 | With frictional brake assembly mechanically linked to, and operationally influenced by, clutch | 1 |
| 20110073820 | SAFETY BRAKE DEVICE FOR THEATRE HOIST - A safety brake device for a theatre hoist to prevent the uncontrolled release of a load that is suspended above or below people includes an overrunning clutch and a torque disc. The torque disc only rotates with the overrunning clutch when the load is lowered, but must overcome friction forces applied to the surface of the torque disc to do so. The friction forces are constantly applied to the torque disc by maintaining friction material in contact with the torque disc. The friction material is a non-asbestos, non-metallic composite saturated with a lubricant. | 03-31-2011 |
| 254321000 | Including means for preventing or retarding rotation of one or more drums in at least one direction | 2 |
| 254322000 | Frictional brake assembly having rotating, wheel structure and shiftable shoe or band | 2 |
| 20110001102 | BAND BRAKE - A band brake for rotating machinery and equipment, in particular, a band brake for hoists, winches, and similar load lifting equipment. The band brake includes a resilient flexible band disposed about a rotatable drum, a tension bar pivotally coupled to a frame, a positioner attached to the frame and coupled with the tension bar to move the band brake between an engaged position and a disengaged position. The positioner includes a linear actuator, an articulated link assembly, and a magnetic retention assembly. | 01-06-2011 |
| 20110037040 | Fluid shear actuated hoist brake - A fluid shear actuated brake mechanism includes an outer hub secured to a hoist frame, a main brake disc stack engaged between the outer hub and a hoist drum shaft, an actuator hub helically engaged with the outer hub, and an actuator disc stack engaged between the actuator hub and the shaft. The main disc stack and the actuator disc stack are immersed in a fluid. Rotation of the shaft in a load lowering direction generates fluid shear in the actuator disc stack which rotates the actuator hub in a lowering direction and advances it toward the main disc stack, compressing it and the actuator disc stack. Rotation of the shaft in an opposite load lift direction retract the actuator hub from the main disc stack. | 02-17-2011 |
