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| Number | Title | Issue Date |
| 7284758 | Textured seal for reduced wear The present invention relates to seals having textured features. The present invention particularly relates to seals having contact surfaces with said features wherein the contact surface seals properly and is resistant to wear. The contact surface is able to perfor... | 10/23/2007 |
| 6651988 | Compact actuator with hydraulic seal An actuator for use in an active mount system for reducing vibration transmission from a vibrating component to a support structure. The actuator is disposed in a housing that is attached to the vibrating component or the support structure. The actuator i... | 11/25/2003 |
| 6227548 | Seal for machine parts that reciprocate relative to one another A seal such as a valve shaft seal for use with machine parts that reciprocate relative to each other includes an elastomer sealing lip adapted to rest with a radial spring preload on one machine part and a sleeve-shaped holder carrying the sealing lip and... | 05/08/2001 |
| 6164659 | Piston rod seal A piston rod seal includes a sealing disk provided with a reinforcement element, a guide mechanism, and a support piece which are adapted to be placed consecutively in a metal pipe or similar object functioning as a housing, and which are adapted to surro... | 12/26/2000 |
| 5833245 | Elastomer ring seal for pressurized fluids An elastomer ring seal for pressurized fluids that is particularly suited for preventing unidirectional fluid flow between outer and inner cylindrical surfaces of two or more mating members, which resists permanent deformation, and is highly leak resistan... | 11/10/1998 |
| 5066029 | Annular sealing apparatus An improved seal for sealing across an annulus between an inner cylindrical sealing surface and an outer cylindrical sealing surface. The seal provides a body and a flange spaced therefrom with an annular flexible arch extending between the body and the f... | 11/19/1991 |
| 4917390 | Hydraulic seal assembly An improved seal for use in a hydraulic system such as a piston rod in a housing, the seal having a stressing member and sealing member in which the latter is in point contact with, for example, a piston rod under low fluid pressure and has an additional ... | 04/17/1990 |
| 4909520 | Seal A shaft or piston seal for preventing unidirection fluid flow between two concentric mating members has an annular body in the form of a ring-like member with a polygonal profile in right cross section having innermost and outermost radial portions. One o... | 03/20/1990 |
| 4893823 | Seal assembly A seal assembly is disclosed for installation in an annular groove having inner and outer radial surfaces interconnected by an axial surface. The seal assembly is comprised of a generally annular energizer element formed of an elastomeric material and inc... | 01/16/1990 |
| 4602791 | High pressure seal assembly A seal assembly for sealing two relatively movable parts against fluid leakage comprises a seal ring of compressible material mounted on one of the parts, and a supporting ring of non-compressible material positioned in an axial annular groove in said sea... | 07/29/1986 |
| 4582330 | Seal with cleft seating surface An annular or linear seal having a substantially K-shaped cross section. The seal with cleft seating surface provides a two-way pressure barrier when it is installed in a groove having a cross section of "sigma" shape, wherein the flat side of the K-shape... | 04/15/1986 |
| 4577874 | Seal assembly A two element, high and low pressure seal assembly to be used in a hydraulic or pneumatic sealing environment between two relatively movable machine parts, the seal assembly comprising a spring element, circular or rectangular in cross-section and made of... | 03/25/1986 |
| 4437674 | Fluid sealing devices Disclosed is a sealing arrangement comprising two rings which preferably are complementary right trapezoids in cross-section. One ring is an elastomeric sealing ring. The other ring is a semi-rigid non-elastomeric back-up ring which is more rigid than the... | 03/20/1984 |
| 4239244 | Hydraulic piston rod seal A three-part seal to be fixed in a gland formed on the first of two mating cylindrical structures in a hydraulic apparatus. A continuous Teflon nondeformable bearing ring is provided in the gland. The bearing ring has a first cylindrical surface for conta... | 12/16/1980 |
| 4204690 | Sealing retaining ring assembly A sealing ring assembly is disclosed for use in sealing the annular gap between two concentric cylindrical members, one of the members having an annular groove and the other member having a surface opposed to the groove. Deformable seal material and a rad... | 05/27/1980 |
| 4190259 | Single apex two element fluid pressure seal assembly A two element, high and low pressure seal assembly to be used in a hydraulic or pneumatic sealing environment between two relatively movable machine parts, the seal assembly comprising an anti-extrusion spring element illustrated as generally rectangular ... | 02/26/1980 |
| 4179131 | Seal arrangements A seal arrangement comprising three sealing rings. The first ring is intended to locate in a groove in a first machine element and has a bearing surface by which it is bearable against the base of the groove of the first machine element, and a surface spa... | 12/18/1979 |
| 4109921 | Seal for pistons and piston rods of cylinder-type actuators An annular seal for pistons and piston rods of cylinder-type actuators, especially hydraulic actuators, where a first sealing ring of highly elastic material is received inside an annular groove in such a way that a sharp edge of the ring exerts an elevat... | 08/29/1978 |
| 4089533 | Resilient seal rings with dual lips A seal ring for use on a piston or rod has a static sealing periphery that provides sealing contact across its entire surface and includes an interference lip for high sealing contact and a dynamic sealing periphery that has large and small diameter porti... | 05/16/1978 |
| 4067584 | Guiding and sealing arrangements for pistons, piston rods and the like A guide ring having a seating surface of `U`-shaped cross-section. A plurality of the guide rings may be carried by a piston, piston rod or the like in abutting relation to provide a continuous imperforate surface, or axially spaced from one another with ... | 01/10/1978 |
| 4032159 | Interference compression seal An interference compression seal comprising a delta-shaped seal of relatively soft elastomeric material adapted to be placed in a groove between relatively moving machine parts with the apex of the delta directed radially outwardly creating a line seal an... | 06/28/1977 |
| 3942806 | Sealing ring structure A Sealing Ring Structure useful for pistons and piston rods has a sealing section and a stressing section for pressing a contact surface of the sealing section into engagement with a moving surface to be sealed. The sealing and stressing sections may be s... | 03/09/1976 |
