Did You Know...
...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 8056692 | Sealing system and wet-running dual-clutch system with a sealing system A sealing system with at least one sealing device for a pressurizing-agent-operable actuating device, for sealing off a pressure chamber assigned to the latter from the surroundings. The individual sealing element being placed in a groove formed by the actuating dev... | 11/15/2011 |
| 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 |
| 7311311 | Seal A seal rubber 3 is placed in a first peripheral groove 2 formed in one main surface 1A of an approximately flat-plate-shaped metal body 1. A second peripheral groove 4 and multiple communicating holes 5 to communicate betwee... | 12/25/2007 |
| 7290481 | Oscillating type compressor A lip ring is attached to a piston so as to be rotatable relative to the piston in a circumferential direction, and a seal portion is provided between a ring attachment groove of the piston and an attachment portion of the lip ring. During a suction stroke, the lip ... | 11/06/2007 |
| 7273026 | Roller follower body The present invention relates to a roller follower, comprising an outer surface, enclosing a first cavity, a second cavity, and a transition opening, wherein the first cavity includes a first inner surface configured to house a cylindrical insert the second cavity i... | 09/25/2007 |
| 7261153 | Packer cups A packer cup for use in sealing the interior of a pipe under pressure is described. The cup uses a bell-shaped end which has a lip of softer material which is integral with the body of the cup which is harder material. Under pressure the lip expands against the side... | 08/28/2007 |
| 7252293 | Two-part gasket for pipe-to-pipe connections A gasket for pipe-to-pipe connections, which is closely received within a rectangular-shaped annular groove in the bell end of a pipe, and provides a compressive, fluid-tight seal with the spigot end of another pipe. The gasket includes a two-part body having a subs... | 08/07/2007 |
| 7229077 | Ordered elastomeric composite material Ordered elastomeric composites comprise an ordered arrangement of a number of first elastomeric phases distributed uniformly within a continuous matrix second elastomeric phase. The second phase can be formed from an elastomeric material that is relatively harder th... | 06/12/2007 |
| 7229102 | Fluid coolant union A coolant union includes a seal assembly having a first seal member and a non-rotating second seal member. At least one of the annular sealing surfaces presented by the rotating seal member and the non-rotating seal member is chamfered such that the chamfered sealin... | 06/12/2007 |
| 7210398 | Cover seals with latching locking features Seal apparatus includes a cover seal having a body and an extending cylindrical sleeve with the sleeve including a radial internal groove. A piston is provided having a circumferential groove and a biasing element is disposed between the internal and circumferential... | 05/01/2007 |
| 7188841 | Secondary piston seal A secondary seal is provided for an internal combustion engine having a piston, cylinder bore, ring seal, secondary seal, and leak path. Forces are applied from the combustion side of the piston through a cylinder gap and a leak path to the secondary seal. The secon... | 03/13/2007 |
| 7188477 | High temperature dynamic seal for scramjet variable geometry A seal assembly for use in an engine, such as a scramjet engine, having a movable element, such as inlet cowl flap, is provided. The movable element has an outboard structural member which requires thermal protection. The seal assembly includes a sealing element and... | 03/13/2007 |
| 7175176 | Device for feeding suction air or blowing air in a sheet-processing machine A device for feeding suction air or blowing air to a sheet-retaining device displaceable relative to a machine element in a sheet-processing machine, includes a first air-feeding element connectible in terms of flow to a suction-air or blowing-air source. A second a... | 02/13/2007 |
| 7137740 | Sensor-holding lid for a wheel hub bearing Sensor-holding lid for a wheel hub bearing, the lid presenting a base wall which is externally delimited by a peripheral border, an axial ledge which is integral to the wall and which is provided with a passing hold for housing the sensor, and a cylindrical wall whi... | 11/21/2006 |
| 7131454 | Piston sealing mechanism for liquid additive injection pump A system for injecting a predetermined amount of a secondary fluid into a primary fluid stream uses a liquid additive injection pump driven by a fluid powered motor driven by the primary fluid stream. The liquid additive pump has a reciprocating piston movable withi... | 11/07/2006 |
| 7121552 | Piston ring A piston ring includes a lateral surface which covers a circumferential surface of a piston and support segments with retaining surfaces which engage with the top and bottom of the piston. A piston ring joint allows the piston ring to be elastically deformed in the ... | 10/17/2006 |
| 7061249 | Sealed condition inspecting device An object of the present invention is to provide a seal condition inspection apparatus capable of reliably inspecting seal condition. The seal condition inspection apparatus includes an electrically-variable-quantity detecting section for detecting an electrically v... | 06/13/2006 |
| 7044472 | Combined steel oil control ring A combined steel oil control ring is provided which has steel side rails and a steel spacer expander. The spacer expander includes ear portions for contacting the side rails. The ear portions are substantially equally spaced with respect to each other along the inte... | 05/16/2006 |
| 7021633 | Low friction fluid seal device with additive to rubber compound A fluid seal device for use in sealing an annular space between an internal surface of a cylinder and a member therein having an outer cylindrical surface and being formed at least in part from rubber. An oleamide additive is included in the rubber compound comprisi... | 04/04/2006 |
| 6993996 | Torsional vibration damper The invention relates to a hydraulic torsional vibration damper which is characterized in that the secondary mass is guided by a pair of slotted plastic flange sleeves with an L-shaped cross-section. The damper is characterized in that the butt joint is closed by a ... | 02/07/2006 |
| 6955339 | Valve body with integral seal retention groove A valve body has one or more integral seal retention grooves and one or more interior hollows which may be manufactured using frictional or other types of welding to join two previously formed portions through at least one cylindrical web. Forging or casting valve b... | 10/18/2005 |
| 6938901 | Combustion gas seal for injector and sealing structure with the combustion gas seal The invention relates to a combustion gas seal for injectors and to a seal structure disposed therewith, for preventing leakage of combustion gas in a state in which an injector is mounted to an engine head. And, the number of parts is reduced, vibration and noise a... | 09/06/2005 |
| 6928815 | Master cylinder having a seal retainer The present invention is directed to a master cylinder provided with an annular seal member (S1) having an annular groove of U-shaped cross section formed on its one end face, and a substantially annular seal retainer (30) for restricting at least axia... | 08/16/2005 |
| 6918595 | Seal for high-pressure pumping system A high-pressure pumping system including an energizing seal component having an aperture extending therethrough and a seal jacket component having a base and a toroidally-shaped flared membrane extending from the base. The body and the flared membrane are monolithic... | 07/19/2005 |
| 6905124 | Unitized seal for a gas spring A unitized seal for use in a gas spring seal assembly. The unitized seal includes a rigid thermoplastic insert having an elastomeric sealing layer surrounding the insert and bonded to the insert. The insert provides rigidity to the seal and includes a central, axial... | 06/14/2005 |
| 6837205 | Internal combustion engine An internal combustion engine is disclosed that includes a piston construction having a compression ring sealing arrangement that prevents penetration of gases thereby, which gases normally produce pollution and inefficiency in gasoline consumption. The essential el... | 01/04/2005 |
| 6811156 | Seal for hydraulically sealing a piston rod A seal for hydraulically sealing a piston rod that travels axially into and out of a housing, preferably in a hydraulic dashpot. The seal comprises a preferably resilient-plastic sealing component (5). The sealing component is provided with one or more sharp ... | 11/02/2004 |
| 6786489 | Sealing insert, especially for a piston in the hydraulic braking system of a motor vehicle The present invention discloses a sealing insert, in particular for a piston in a hydraulic brake system, comprising a central valve arranged in a cavity, a supporting body and a rubber-elastic sealing body that is adhesively connected to said supporting body. The s... | 09/07/2004 |
| 6764079 | Valve seal assembly with straight-walled retainer A radially compliant valve stem seal assembly is adapted for installation over a valve guide of an internal combustion engine. The assembly includes a metallic cylindrical straight-walled retainer with an elastomeric sealing element chemically bonded to the interior... | 07/20/2004 |
| 6719298 | Bonded piston seal for power steering A seal assembly which acts as a piston in a vehicle power steering unit. The seal includes a casing and an elastomeric seal body and is affixed to a movable rack at two attachment points. One point is the tail portion of an axial flange swaged into a groove in the r... | 04/13/2004 |
| 6712362 | Primary seals for master-slave cylinder systems In a master/slave cylinder system for clutches or brakes, primary seals have bevels which interact with similar bevels of formations on housings of the respective cylinders. Along with the lowest possible friction in the region of the sealing lips, this permits carr... | 03/30/2004 |
| 6679477 | Valve body with integral seal retention groove A valve body having one or more integral seal retention grooves and one or more interior hollows which may be manufactured using frictional or other types of welding to join two previously formed portions through at least one cylindrical web. Forging or c... | 01/20/2004 |
| 6659470 | Oil seal of hydraulic shock absorber In an oil seal of a hydraulic shock absorber, the oil seal is made of a nitrile rubber of a low nitrile, and an inner diameter of a second lip is set to be smaller within a range between 0.3 and 1.0 mm $c; than an outer diameter of a piston rod.... | 12/09/2003 |
| 6648335 | Metal-to-metal seal assembly for oil and gas production apparatus A metal-to-metal seal assembly provides a dynamic seal between a piston and a cylinder. A first seal engages the inner diameter of the piston, while a second seal engages an outer diameter of the piston. The piston is disposed between an inner mandrel and... | 11/18/2003 |
| 6595524 | Pressure regulating buffer seal A buffer seal adapted for use in a seal assembly including at least a primary seal, the seal assembly being adapted to provide a fluid seal between two relatively moving machine elements, such as a piston or rod of a first machine element moving within a ... | 07/22/2003 |
| 6575471 | Cylinder for a hydraulic system In a cylinder for a hydraulic system, a seal has a sealing bead clamped between a housing of the cylinder and a supporting part which holds the sealing bead in a deformed state by pretensioning. The seal is reliably held in its intended position by the su... | 06/10/2003 |
| 6544012 | High pressure plunger pump housing and packing A Y-block fluid section plunger pump housing has a cylinder bore which is transversely elongated at its intersection with suction and discharge bores to provide stress relief and a reduction in housing weight. A spoked ring valve spring retainer ring furt... | 04/08/2003 |
| 6543783 | Sealing ring with sloping support body A sealing ring having a sealing body with a dynamically stressed sealing lip made of an elastomeric material which at least partially surrounds a toroidal supporting body. The supporting body has a slope facing the sealing lip, and the sealing body has a ... | 04/08/2003 |
| 6530759 | Reciprocating plunger pump with seal mounting support A high pressure fuel pump has a plunger that extends through a cylinder and is reciprocally located in a pressurizing chamber. The plunger is reciprocated by a lifter and changes the volume of the pressurizing chamber to pressurize fuel in the pressurizin... | 03/11/2003 |
| 6511075 | Elastomer seal between a piston and a cylinder or a shaft on an automatic transmission An elastomer seal between a piston and a cylinder or a shaft of an automatic automobile transmission. An elastomer seal between a piston and a cylinder or a shaft of an automatic automobile transmission, the piston and cylinder or shaft carrying out trans... | 01/28/2003 |
