| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 277377000 | Particular axial biasing feature | 49 |
| 20090160134 | Rotary transmission leadthrough and torque transmission device with a rotary transmission leadthrough - The invention relates to a rotary transmission leadthrough for passing a medium through between a fixed part and a rotary part rotable relative to the fixed part, wherein a stop device, in particular a stop disc, is arranged between the fixed part and the rotary part. The invention is distinguished by the fact that the stop device, in particular the stop disc, is prestressed against the rotary part in the axial direction. | 06-25-2009 |
| 20100237565 | INTERLOCKING COMPOSITE SEALS - Seal assemblies and methods for forming them are described. Aspects of the seal assemblies include a seal ring made of a relative soft material supported by a specially configured backing ring made of a much higher modulus material, such as ferrous and non-ferrous metal or engineered plastic. The seal assemblies may optionally include a retaining ring to prevent slippage relative to the environment or housing in which they are placed and to prevent shuttling. The seal assemblies may also optionally include an energizer to alter the force generating by a sealing lip on the seal ring. The seal assemblies preferably include a rigid hoop ring to minimize shrinkage due to thermal cycling. | 09-23-2010 |
| 20100264598 | APPARATUS OF BILGE PREVENTION FOR A SHIP - Disclosed is an apparatus ( | 10-21-2010 |
| 20100264599 | SEAL - A seal for sealing together first and second tubular members ( | 10-21-2010 |
| 20100283209 | SEAL CARTRIDGE - A seal cartridge for a generator includes a housing which defines an annular cavity. An axial load spring and a seal ring within the annular cavity such that the seal ring is biased by the axial load spring. | 11-11-2010 |
| 20100283210 | SEALS | 11-11-2010 |
| 20110140366 | IMPROVEMENTS IN AND RELATING TO SPRING ENERGISED PLASTIC SEALS - A seal assembly for providing a seal between a pair of components has a sealing ring made of flexible plastics material and a backup ring ( | 06-16-2011 |
| 20110233871 | LIFTOFF CARBON SEAL - A liftoff carbon seal assembly includes a rotating seal plate adjacent to a rotating seal backer plate and a rotating seal plate retainer. The rotating seal plate defines a rotating seal plate face which extends beyond a rotating seal plate retainer face of the rotating seal plate retainer with a static carbon seal is adjacent to the rotating seal plate. | 09-29-2011 |
| 20110285091 | Method for Applying Wear Resistant Coating to Mechanical Face Seal - Mechanical face seal rings having a metallurgically bonded wear-resistant coating on the wear surfaces thereof and methods for forming such coated components is taught herein. The face seal rings, which can be formed of a relatively inexpensive base metal or alloy, have a hard metal alloy slurry disposed on the wear surfaces and then fused to form a metallurgical bond with the iron-based alloy. The wear-resistant coating comprises a fused, metal alloy comprising at least 60% iron, cobalt, nickel, or alloys thereof. | 11-24-2011 |
| 20120112417 | AXIAL FACE SEAL ASSEMBLY - An axial face seal arrangement, which is arranged for joint rotation with a drive shaft in a rotary machine, includes a base element and a moving part, wherein the base element is connectable to a drive shaft for joint movement therewith, the moving part presenting a sealing end face and being axially movable in relation to the base element and biased from the base element by a spring, wherein the moving part and the base element include at least one torque driver pin and at least one corresponding aperture into which the torque driver pin is displacably inserted for joint rotational movement of the moving part with the base element. At least one wear protection pin is arranged between the torque driver pin and the aperture at a force transmitting interface of the torque driver pin and the aperture. | 05-10-2012 |
| 20120139186 | Mechanical Seal Device - Provided is a small mechanical seal device which can efficiently wash a sealing surface, and can appropriately seal a sealed fluid and a quenching liquid. In a mechanical seal device ( | 06-07-2012 |
| 20130038024 | SLIDE RING SEAL - A mechanical face seal includes a rotating counter ring having a sealing surface and a stationary face seal ring having a sealing surface. The sealing surface of the counter ring is disposed opposite from the sealing surface of the face seal ring. The sealing surfaces of the counter ring and the face seal ring bear against each other. | 02-14-2013 |
| 20160003361 | MECHANICAL SEAL DEVICE - A mechanical seal device | 01-07-2016 |
| 20160003362 | MECHANICAL SEAL DEVICE - A mechanical seal device includes a rotary ring | 01-07-2016 |
| 277378000 | Magnetic | 1 |
| 20160201803 | Magnetic Rotary Seal with Improved Drain Back | 07-14-2016 |
| 277379000 | Particular spring feature | 25 |
| 20080246222 | Displacer Unit With a Valve Plate Body - A displacer unit with a valve plate body is disclosed. The displacer unit having at least one displacer space which is arranged in a cylindrical drum rotating about an axis of rotation and which can be connected to an inlet connection and an outlet connection by means of a control surface. The control surface is formed on a valve plate body which is provided with a first control opening, which is connected to the inlet connection, and with a second control opening, which is connected to the outlet connection. The first control opening and the second control opening are spaced apart radially, where the displacer space can be connected to the first control opening by a first connecting passage and to the second control opening by a second connecting passage. The connecting passages are provided with a respective mechanical face seal for sealing relative to the control openings. | 10-09-2008 |
| 20090230628 | FACE SEAL FOR GAS TURBINE ENGINE - A face seal for a gas turbine engine comprises a seal body that has a contact face to engage a rotating surface. The contact face is defined as an area extending radially between an inner diameter of the seal body and an outer diameter of the seal body at one seal end providing a radial width. The radial width is between greater than 0.15 inch (3.81 mm). | 09-17-2009 |
| 20100259012 | FRONT MECHANICAL SEAL FOR PUMPS - The present invention relates to a front mechanical seal for pumps with frictional rings and fluid lubrication, of the type comprising a ‘rotary seal’ (B) mounted on a support collar, formed of a first collar ( | 10-14-2010 |
| 20110037232 | MECHANICAL SEAL DEVICE - The present invention provides a mechanical seal device, capable of sealing special fluid such as chemicals, easy to be mounted to a device and small in size. The mechanical seal device comprises a seal cover, a first seal ring axially-movably arranged in an inner circumference side of the seal cover, a second seal ring fixed to a rotary shaft, a spring arranged in the inner circumference side of the seal cover and pressing the first seal ring in a direction toward the second seal ring and a bellows mounted to the inner circumference side of the seal cover and axially-expandably mounted between the seal cover and the first seal ring. The spring is mounted to the seal cover along the axial direction in which the bellows is expanded and contracted. | 02-17-2011 |
| 20120133100 | COMPRESSION UNIT - A compression unit ( | 05-31-2012 |
| 20120217704 | GAS SEAL FOR AEROSPACE ENGINES AND THE LIKE - A gas seal for aerospace engines has a stationary seal housing, a rotating seal plate mounted on the engine drive shaft and a carbon ring seal movably supported in the housing with a face which mates with the face of the seal plate to create a gas seal therebetween. A plurality of flexible pins have first ends supported on the housing and second ends slidably connected with the carbon ring seal to permit the latter to shift axially. A plurality of compression springs bias the two seal faces together. The housing has a first twist lock which selectively engages a second twist lock on the carbon ring seal to movably retain the latter in the housing. The second ends of the spring pins resiliently deflect during mutual rotation of the carbon ring seal and the housing to facilitate engagement and disengagement of the first and second twist locks. | 08-30-2012 |
| 20130075976 | COMPLIANT MOUNTING OF AN AXIAL FACE SEAL ASSEMBLY - A axial face seal assembly includes first and second structures rotatable relative to one another about an axis. A carrier supports a seal that engages the second structure. The carrier is configured to move along the axis. First and second springs operatively are arranged between the first structure and the carrier. The first and second springs are configured to bias the carrier relative to the second structure respectively in first and second directions along the axis for providing a desired closing force on the second structure. A method of sealing a rotating structure includes biasing a seal toward a rotating sealing surface with a first spring to provide a desired axial closing force. The axial position of the seal relative to the rotating sealing surface is changed to an undesired axial closing force. The seal is biased with a second spring to achieve the desired axial closing force. | 03-28-2013 |
| 20140035234 | MECHANICAL SEAL - A cartridge-mechanical seal includes a first recess provided on an end face of a seal cover. A second recess is provided on an outer circumference of a collar. A set plate fixed to the end face of the seal cover. When the set plate is fixed, a projection is inserted in the first recess and in contact with the rotary shaft's side face of the first recess, and an end of the set plate is in contact with the bottom of the second recess, whereby positioning of the seal cover and the collar with respect to a radial direction is achieved. | 02-06-2014 |
| 20140062028 | GAS SEAL FOR AEROSPACE ENGINES AND THE LIKE - A gas seal for aerospace engines has a stationary seal housing, a rotating seal plate mounted on the engine drive shaft and a carbon ring seal movably supported in the housing with a face which mates with the face of the seal plate to create a gas seal therebetween. A plurality of flexible pins have first ends supported on the housing and second ends slidably connected with the carbon ring seal to permit the latter to shift axially. A plurality of compression springs bias the two seal faces together. The housing has a first twist lock which selectively engages a second twist lock on the carbon ring seal to movably retain the latter in the housing. The second ends of the spring pins resiliently deflect during mutual rotation of the carbon ring seal and the housing to facilitate engagement and disengagement of the first and second twist locks. | 03-06-2014 |
| 20140145404 | GAS SEAL ASSEMBLY - Provided is a gas seal assembly which includes: an inner sleeve in which a rotation axle is inserted; a rotational sealing sleeve inserted into the inner sleeve; a sealing sleeve contacting the rotational sealing sleeve; a forcing sleeve forcing the sealing sleeve towards the rotational sealing sleeve by contacting the sealing sleeve; a seal housing separated by a predetermined distance from the forcing sleeve and the sealing sleeve and supporting the forcing sleeve; and an elastic part mounted between the seal housing and the forcing sleeve and providing a restoring force to the forcing sleeve, wherein the seal housing protrudes in a center direction of the rotation axle and includes a supporting protrusion for supporting one end of the forcing sleeve. | 05-29-2014 |
| 20160084383 | SLIDE RING SEAL - A slide ring seal has a slide ring, supported such that the slide ring is axially movable, and a counter ring. The slide ring and the counter ring have respective sealing surfaces contacting one another. The slide ring sealing surface faces the counter ring sealing surface. The slide ring is pressed against the counter ring by a bellows-like spring element. The slide ring seal may be designed so the slide ring seal has an especially flexible slide ring and/or counter ring after economical and trouble-free production, the slide ring seal has at least one sealing surface with elevations or unevenness of a magnitude from 0.1 μm to W mm, W conforms to the formula W=0.03 Dm/s, wherein the average diameter Dm is the average of the circular-ring-shaped sealing surface's outside (Da) and inside (Di) diameter, and s is the slide ring or counter ring thickness. | 03-24-2016 |
| 277380000 | Made of elastomeric material | 5 |
| 20090212500 | FLOATING SEAL - To prevent premature wear and damage of elastic rings caused by fine grained soil, floating rings | 08-27-2009 |
| 20160069457 | SLIDE RING SEAL - A slide ring seal has a slide ring, mounted in an axially movable manner, and a counterpart ring, wherein the slide ring and the counterpart ring each have sealing surfaces which bear against one another, wherein the sealing surface of the slide ring is situated opposite the sealing surface of the counterpart ring, and wherein the slide ring is pressed against the counterpart ring by a spring, wherein, with regard to refining and developing a slide ring seal of this type such that, while being inexpensive and easy to manufacture and having a construction involving a particularly small number of components, it seals off two chambers in a reliable and permanent manner, and the counterpart ring is formed in one piece with an axial projection which can be assigned to a shaft in order to fix the counterpart ring on the shaft. | 03-10-2016 |
| 277381000 | Frustoconical shape | 1 |
| 20090121442 | METHOD OF MANUFACTURING RING-SHAPED MEMBER, BACKUP RING AND SEAL STRUCTURE FOR FUEL INJECTION VALVE - To provide: a method of manufacturing a ring-shaped member that can efficiently manufacture a stronger backup ring that reinforces a seal member disposed in a pressure introduction chamber of a fuel injection valve; the backup ring; and a seal structure for a fuel injection valve disposed with the backup ring. | 05-14-2009 |
| 277382000 | O-ring shape | 2 |
| 20090045583 | Ring Sealing Between Sliding Surfaces - An o-ring seal ( | 02-19-2009 |
| 20180023708 | SEAL ASSEMBLY AND METHOD FOR MANUFACTURING THE SEAL ASSEMBLY | 01-25-2018 |
| 277385000 | Arrangement or location | 9 |
| 20080217861 | Coaxial Multi-Shaft Assemblies - A concentric multi-shaft assembly ( | 09-11-2008 |
| 20090295097 | Shaft-Sealing Device For pump - A shaft-sealing device includes a seal cover ( | 12-03-2009 |
| 20100013166 | MECHANICAL SEAL ASSEMBLY - A mechanical seal assembly to be used in sterile applications comprises a pair of co-operating seal rings ( | 01-21-2010 |
| 20110042903 | SLIDE RING SEAL ARRANGEMENT - A slide ring seal arrangement comprises a rotationally fixed slide ring ( | 02-24-2011 |
| 20140097573 | SEALING ARRANGEMENT FOR A ROTATING SHAFT - The invention relates to a sealing system, in particular for sealing pump shafts of vertically arranged pumps for conveying for example liquefied natural gas (LNG) or other cryogenic fluids below −80° C. The sealing system has a mechanical seal arrangement which is flowed through by a barrier fluid at a barrier fluid pressure. The mechanical seal arrangement prevents an exiting of a sealing fluid from a sealing chamber, wherein the barrier fluid pressure is higher than a sealing fluid in the sealing chamber. | 04-10-2014 |
| 20140319774 | MECHANICAL SEAL - A seal designed for insertion between a rotating shaft and a fixed casing having an opening through which the shaft is fitted, the seal having a sleeve designed to fit onto the shaft; a first sealing ring fitted to the sleeve; a cup designed to fit inside the opening; and a second sealing ring connected to the cup by a bellows of elastomeric material; the first and second sealing rings cooperate frontally with each other under the axial load exerted by a spring interposed between the cup and the second sealing ring; and the bellows is connected in angularly free manner to the cup to prevent self-induced torsional oscillation and noise resulting from it. | 10-30-2014 |
| 20150300500 | A SEAL - A mechanical seal for providing a fluid-tight seal between relatively rotatable elements includes a stationary part for securing to a housing, which has a stationary seal face, a rotary part for securing to a shaft, which includes a rotary seal face, a spring urging the rotary seal face into engagement with the stationary seal face and a toroidal sealing member between the rotary component and the shaft. The toroidal sealing member is accommodated within a recess of the rotary part, and the recess is defined by two members of which the first rotary part member includes the seal face and a second rotary part member is positioned between the first rotary part member and the spring. | 10-22-2015 |
| 20160178065 | MECHANICAL SEAL | 06-23-2016 |
| 277386000 | Radially biasing member creates axial bias | 1 |
| 20160169393 | Axial Shaft Seal | 06-16-2016 |
| 277387000 | Fluid pressure | 9 |
| 20090322034 | High Volume Fluid Seal for Electrosurgical Handpiece - A fluid resistant seal connector for an electrosurgical handpiece includes a housing adapted to be supported within an electrosurgical handpiece. The housing includes opposing half sections each having an inner peripheral surface. The fluid resistant seal further includes a first seal adapted to engage an activation circuit of the handpiece and at least one second seal adapted to engage an electrosurgical supply wire in a fluid-tight relationship therewith. At least one of the first and second seals is configured to complement the inner peripheral surface of the housing. | 12-31-2009 |
| 20110198813 | MECHANICAL SEAL - A mechanical seal of an “outside type” for sealing a sealed fluid that may leak from an inside periphery of a sliding face towards an outside periphery is provided. The seal includes a rotating-side sealing element and a stationary-side sealing element disposed so as to be situated externally with respect to a stuffing box. The stationary-side sealing element, which accommodates a spring, is installed on a seal cover that is secured to the housing. The rotating-side sealing element is installed on a collar that is installed directly on the rotating shaft. The rotating side, which comprises the rotating-side sealing element and the collar, is positioned such that rotation takes place in the atmosphere on a machine-exterior side. A balance ratio A2/A1 is 1 or less, A1 being an axial-direction projection area of the sliding face of the stationary-side sealing element and A2 being an axial-direction projection area that is subjected to a seal fluid pressure acting as a motive force in the axial direction relative to the stationary-side sealing element. An annular cooling jacket is disposed between an inside periphery of the housing and an outside periphery of the rotating shaft. | 08-18-2011 |
| 20120018957 | SEAL RING - A seal ring having a more stable torque reduction effect. A seal ring is adapted to seal the annular gap between a housing and a shaft which is inserted through the shaft hole of the housing, the housing and the shaft being provided so as to be rotatable relative to each other. The seal ring is mounted in an annular groove provided in the shaft, is configured so that the seal ring is pressed, by the pressure of fluid to be sealed, against a side surface of the annular groove and against the inner peripheral surface of the shaft hole, and has a recess ( | 01-26-2012 |
| 20120187636 | Mechanical Seal Device - In order to provide a mechanical seal device, which is suitably used even under a condition that fluid pressure is frequently switched between a positive pressure and a counter pressure, a mechanical seal device comprising; a rotary ring | 07-26-2012 |
| 20160169392 | OPERABLE SEAL CONNECTOR DEVICE | 06-16-2016 |
| 20160377181 | SPLIT CIRCUMFERENTIAL LIFT-OFF SEAL SEGMENT - A circumferential shaft seal segment has radial inner and outer faces and first and second axial faces, and at least one feed slot in the radial inner face extending from the first axial face toward the second axial face. At least one recess extends from the at least one feed slot and has first and second axially spaced side walls, a bottom between the side walls, a first end at the feed slot and a second end circumferentially spaced from the feed slot. The recess includes a first portion extending from the first end and a second portion extending from the second end, and a radial depth of the first portion is a first function of a distance from the feed slot and a radial depth of the second portion is a second, different, function of the distance from the feed slot. | 12-29-2016 |
| 277388000 | Creates counter pressure | 2 |
| 20080217862 | Arrangement of a Shaft With a Mechanical Face Seal Mounted Thereon - An arrangement of a shaft with a slip-ring seal mounted thereon is disclosed. The slip-ring seal ( | 09-11-2008 |
| 20120098204 | Seal Assemblies - A seal assembly for providing a seal between a pair of relatively rotatable components has; a first seal ring ( | 04-26-2012 |
| 277389000 | And bellows or diaphragm | 1 |
| 20190145525 | DYNAMIC SEAL | 05-16-2019 |
