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| Number | Title | Issue Date |
| 7370866 | Sleeve element having a biasable end region, apparatus including same, and method of use A sleeve element having at least one end region configured to be biased into a laterally adjacent recess formed in one of a piston element surface and a bore surface is disclosed. A seal assembly is disclosed including two sleeve elements, each sleeve element having... | 05/13/2008 |
| 7347424 | Shaft seal having integrated removal feature A dynamic shaft seal assembly has inner and outer cases that are clamped together to secure a seal element therebetween for dynamic sealing about a rotatable shaft. The inner case is formed with integral pull tabs that are engageable by a seal removal tool to facili... | 03/25/2008 |
| 7341258 | Cammed seal assembly with sealing ring having an angled leg portion and foot portion with elastomeric energizer element A seal assembly seals first and second operational surfaces spaced apart by a gap. The first surface includes a seal groove having a base surface and first and second side surfaces. A sealing element in the seal groove has a foot portion extending parallel to the ba... | 03/11/2008 |
| 7311182 | Sealing and guiding packet To make a sealing and guiding packet available to shock dampers in order to minimize or even entirely prevent the negative effects of the so-called stick-slip effect and thus permit greater riding comfort, a sealing and guiding packet is proposed which comprises the... | 12/25/2007 |
| 7195469 | Dust seal in a scroll fluid machine In a scroll fluid machine, a stationary scroll and an orbiting scroll are provided. On the stationary scroll opposing the orbiting scroll, an annular groove is formed. An O-ring, a flexible support ring and a sliding member are put in the annular groove. The support... | 03/27/2007 |
| 7195246 | Sealing material A sealing material for sealing liquid composed of a seal main body of resin, having a U-shaped cross section and a concave groove opening to an axis direction, and an O-ring of rubber fit to the concave groove of the seal main body used for medical appliances and pa... | 03/27/2007 |
| 7191875 | Disc brake A disc brake includes a piston seal made of rubber that is shaped to fit into a seal groove on the inner surface of a cylinder of a caliper for a brake piston. To prevent braking effectiveness from being impaired, even if the temperature of a caliper rises in a disc... | 03/20/2007 |
| 7168147 | Method for manufacturing a drilling tool with an elastomer seal having graded properties A method of forming a seal for a subterranean drilling tool employs irradiation. The seal is formed of a single homogeneous elastomeric material. The seal has an exterior surface with at least one portion that is in sliding engagement with part of a seal gland of th... | 01/30/2007 |
| 7168361 | High pressure pump piston A high pressure piston for use within a liner for a reciprocating pump comprises an elastomeric seal and an annular bearing ring. During the pump's pressure stroke at least a portion of the bearing ring elastically expands radially to narrow or close the extrusion g... | 01/30/2007 |
| 7159870 | Sealing at the juncture of three members A three-prong integrally formed resilient seal for sealing the juncture of three gasketed members. The seal has a common region having an embedded strain distributor of stiffer material than the remainder of the seal which is integrally formed, preferably by insert ... | 01/09/2007 |
| 7083170 | Rod or piston primary seal A rod or piston primary seal, which includes a primary seal (2) facing the space (1) to be sealed and a secondary seal (3) facing away from it, in which the primary seal (2) is fitted into the groove (4), of a holding element (5... | 08/01/2006 |
| 7055824 | Lip-type high pressure seal A high pressure shaft seal (10A) for use in a refrigerating machine wherein carbon dioxide is used as a refrigerant in lieu of “Freon”. The seal has a sealing lip (24A) made of a non-elastomeric polymer material such as nylon that has a small gas p... | 06/06/2006 |
| 6997461 | High speed high pressure rotary A seal system for use in high speed, high pressure applications including a rigid retainer and a resilient body covering the retainer having pressure balancing control. Reduced clearance of the metal case retainer prevents seal extrusion. ... | 02/14/2006 |
| 6957605 | High pressure pump piston A high pressure piston for use within a liner for a reciprocating pump comprises an elastomeric seal and a metallic annular bearing ring having relatively high heat conductivity compared to the liner and seal. During the pump's pressure stroke a portion of the beari... | 10/25/2005 |
| 6913266 | Sealing device A sealing device for a shaft (2) or rod which is movably disposed in a guide arranged between a high-pressure space (10) and a low-pressure area (11) of a pressure-resistant housing (1) bounding the high-pressure space (10), and wh... | 07/05/2005 |
| 6910692 | Composite elastomeric seal for sealing fluid lines A composite elastomeric seal for sealing fluid line members is provided. The composite seal comprises an outer U-shaped seal body and an inner elastomeric portion. The U-shaped seal body comprises inner and outer extending arms, each arm having a shaped contour and ... | 06/28/2005 |
| 6905144 | Spring-loaded ‘L’-shaped seal ring A sealing system adapted for placement into an exterior groove of a structure. The sealing system includes a seal ring having a generally ‘L’-shaped cross-section. The sealing system further includes a canted-coil spring. The seal ring includes an inner surface,... | 06/14/2005 |
| 6805360 | Regulator with segmented body The regulator connects to a high pressure fluid supply and regulates the pressure to a downstream apparatus. If an over-pressure occurs, it is vented to atmosphere. A segmented body reduces production cost. An elongate control stem engages a supply seal assembly and... | 10/19/2004 |
| 6796216 | Guide for the piston rod of a piston-cylinder assembly Guide for the piston rod of a piston-cylinder assembly, especially for a vibration damper, a shock-absorbing strut, or a level-control device. The guide has a guide body with an outer end surface holding a piston rod seal, where the piston rod is installed in the gu... | 09/28/2004 |
| 6648337 | Backup ring with controlled spacing A backup ring is provided adjacent a seal apparatus for delivering a controlled space between two relatively moving parts. The backup ring provides protection against seal extrusion and failure, and can provide an auxiliary seal when needed. The backup ri... | 11/18/2003 |
| 6607197 | Rotary seal with relief angle for controlled tipping A sealing device for sealing the gap between two relatively moving members is provided with a pivot point on its cross-sectional perimeter. As pressure against the seal increases, the seal rotates about the pivot point, resulting in an increased sealing s... | 08/19/2003 |
| 6571822 | Low blow down relief valve A relief valve having blow down values of 5% or lower is disclosed. The low blow down values are the result of reducing friction within the relief valve. The relief valve includes a movable plunger. Clearance is provided whereby the plunger does not exper... | 06/03/2003 |
| 6502826 | Hydraulic cylinder piston seal A piston seal for sealing a high pressure hydraulic cylinder includes a rigid seal ring, an elastomeric energizer ring, and a mask structure. The mask structure is effective in decreasing explosive decompression of air entrapped under the surface of the e... | 01/07/2003 |
| 6454272 | Sealing arrangement and a sealing member therefor A sealing arrangement is designed for sealing a space that extends between high and low pressure areas and that is defined between a first apparatus part and a cylindrical surface of a second apparatus part, the first and second apparatus parts being mutu... | 09/24/2002 |
| 6450502 | Rotary seal with relief angle for controlled tipping A sealing device for sealing the gap between two relatively moving members is provided with a pivot point on its cross-sectional perimeter. As pressure against the seal increases, the seal rotates about the pivot point, resulting in an increased sealing s... | 09/17/2002 |
| 6315301 | Seal apparatus for rotary machines Rotating machine seal device is improved so that seal plate is fitted to rotating portion firmly, thereby self-induced vibration of the seal plate is reduced and occurrence of abrasion or thinning of the seal plate due to the self-induced vibration and se... | 11/13/2001 |
| 6305483 | Multi-piece rotary cone drill bit seal Multi-piece seals of this invention include an annular seal body that is formed from an elastomeric energizing material, and that has a static seal surface along one surface and a contacting surface along another surface. A remaining seal portion in the f... | 10/23/2001 |
| 6283667 | Oil filled pin joint with pressure relieving buffer member The present oil filled pin joint includes at least one buffer member for absorbing rapid pressure increases or spikes in the oil contained in the joint. The present pin joint includes a pin, at least two opposed members joined by the pin for movement one ... | 09/04/2001 |
| 6267380 | Choke arrangement and a method for operating said choke arrangement The choke arrangement comprises an elastic choke ring which consists of a single piece with a gap formed by a parting joint. The choke arrangement: further comprises a support ring which is arranged directly adjacent to the choke ring in the axial directi... | 07/31/2001 |
| 6224064 | Cantering spring loaded fixed base butterfly valve seal A seal for use in spherical disc type butterfly valves. The seal is T-shaped on the inside diameter region where contact is made with the disc and is cupped on radially opposite sides by contoured lips on the seal retainer ring and valve body such that th... | 05/01/2001 |
| 6217030 | Seal assembly A seal for acceptance in an annular gland in a piston comprises an annular primary sealing element, an annular secondary sealing element disposed radially inwardly of the primary sealing element, and a pair of axially spaced back up rings disposed in axia... | 04/17/2001 |
| 6217029 | Seal arrangement for a piston rod In a seal arrangement for sealing a piston rod particularly for a shock absorber of a motor vehicle, where the piston rod is supported in a cylinder so as to be axially movable therein and a slide seal ring is supported in the cylinder in engagement with ... | 04/17/2001 |
| 6179296 | Dual functioning seal for rock bits Dual functioning seals for use in forming a lubricant seal in a rotary rock bit comprise an annular elastomeric seal body having a dynamic seal surface for sealing against a dynamic surface and a static seal surface for sealing against a static surface. T... | 01/30/2001 |
| 6173964 | Seal assembly with backup elements having coil springs positioned therein A seal assembly seals a cylindrical clearance space between first and second coaxial members, and is installed in a coaxial annular groove in the first member. The groove has a mouth, first and second side walls, and a base wall extending therebetween. An... | 01/16/2001 |
| 6170830 | Dual functioning seal for rock bits Dual functioning seals for use in forming a lubricant seal in a rotary rock bit comprise an annular elastomeric seal body having a dynamic seal surface for sealing against a dynamic surface and a static seal surface for sealing against a static surface. T... | 01/09/2001 |
| 6161834 | Pressure energized seal A seal is provided for an offshore fluid swivel to seal a gap passage (34) leading from a transfer chamber (20) to the environment, which uses pressured fluid to apply a variable pressure that pushes the seal tightly against a sealed surface (52) on one s... | 12/19/2000 |
| 6123337 | Composite earth boring bit seal A high performance rock bit journal seal is formed from a composite material comprising an elastomeric material and a nonelastomeric polymeric material. The polymeric material is preferably in the form of fibers compiled or woven into a sheet. The elastom... | 09/26/2000 |
| 6092809 | Secondary seal for a sealing arrangement A sealing arrangement for sealing lubricating oil in and debris out of a final drive of an earth moving machine is disclosed. The sealing arrangement includes a secondary seal for use in severe environments to protect a primary oil seal. The secondary sea... | 07/25/2000 |
| 6068459 | Tip seal for scroll-type vacuum pump A tip seal for use in a scroll-type vacuum pump includes a seal element and an energizer element affixed to the seal element. The scroll-type vacuum pump includes first and second scroll blades that are nested together to define one or more interblade poc... | 05/30/2000 |
| 6030682 | Container for aerosol formulation A container for aerosols which contains 1,1,1,2-tetrafluoroethane, 1,1,1,2,3,3,3-heptafluoropropane, or a mixture thereof as a propellant, wherein the container has at least one elastomeric sealing member comprising a thermoplastic copolymer of about 80 t... | 02/29/2000 |
