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| Number | Title | Issue Date |
| 6485021 | Mechanical seal unit with temporarily connecting inlet and outlet grooves According to the present invention, the mechanical seal unit for pumps including a fixed seal ring facing a lower pressure space and a rotatable seal ring facing a higher pressure space, comprises: at least one outlet groove disposed on a slidable seal fa... | 11/26/2002 |
| 6010132 | Hybrid labyrinth and cloth-brush seals for turbine applications A hybrid labyrinth-brush seal is provided in a flow path between relatively moving parts such as a shaft and a fixed housing. The labyrinth seal includes a plurality of teeth extending radially from one part toward the other providing a labyrinth seal. Th... | 01/04/2000 |
| 6007067 | Multi-operational expansion gasket A multi-operational inflatable packer, particularly for use in oil and gas wells, comprises an outer rubber layer (5), at least two cord layers (6, 7) internal to the outer rubber layer (5), and an inner rubber layer (8); the cord layers comprise yarn of ... | 12/28/1999 |
| 5934680 | Split resin seal ring with chamfered end connection structures A composite step-cut type synthetic resin seal ring having a pair of abutments provided at one circumferential point of the ring body and spaced from each other. Each abutment has end face and comprises a protrusion and a shoulder provided adjacent to eac... | 08/10/1999 |
| 5845910 | Integrated sealing system for automatic transmission An integrated sealing system for automatic transmission made up of a sole part composed essentially of annular structural metal element (10), suitable for assembling in the annular space between the main shaft (1) and semi-shaft of the wheel set (2) and c... | 12/08/1998 |
| 5826883 | Sealing ring with deformable tubular sheath filled with permanent magnetic granules and method of making the same There is provided an endless tubular body forming an enclosed chamber then, and granules of permanent magnet material disposed in the chamber. The body is deformable by the granules when the granules are subjected to a magnetic force. With respect to the... | 10/27/1998 |
| 5820131 | Piston ring having wear coating consisting of Cr2 N or a mixture of Cr2 N and Cr A Cr2 N film or a mixed Cr2 N and Cr film formed by physical vapor deposition on the outer circumferential surface of a piston ring which is in contact with the inner circumferential surface of a cylinder. The axial width of the oute... | 10/13/1998 |
| 5806856 | On-site fillable liquid magnetic seal An on-site fillable ferrofluidic seal comprises a ferrofluidic seal having at least one ferrofluid conducting channel extending through either the magnet, through one of the pole pieces which sandwich the opposing pole ends of the magnet, or through both ... | 09/15/1998 |
| 5803462 | MLS gasket with yieldable combustion seal An improved multi-layer gasket for an internal combustion engine comprises a central carrier plate and at least two surface plates disposed on opposing sides of the central carrier plate. The surface plates include a bead portion annularly located about c... | 09/08/1998 |
| 5799950 | Lubricated joint with equalizing pressure zone The present invention includes a means of equalizing pressure within a sealed pin joint assembly. The pin joint assembly includes slidably connecting a pin through a bearing assembly fitted within a bore in an equalizer bar. The pin is circumferentially s... | 09/01/1998 |
| 5799745 | Device for stabilizing vehicle attitude in terminal portion of countersteering state by reducing vehicle yaw moment produced by yaw moment control mechanism A vehicle attitude control device including a yaw moment control mechanism for giving a yaw moment to the vehicle and controlling the yaw moment, and a controller for controlling the yaw moment control mechanism in a normal target follow-up control mode s... | 09/01/1998 |
| 5797602 | Mechanical seal for water pump of heavy duty vehicle A mechanical seal assembly for use in a coolant circulation system of a heavy diesel engine. The seal assembly includes relatively rotatable seal rings disposed in surrounding relationship to the pump drive shaft. One seal ring is non-rotatable with respe... | 08/25/1998 |
| 5794938 | Brush seal secured by a C-shaped clamping ring A brush seal for sealing a gap between two spaces at different pressures on opposite sides of a rotor and a stator. The brush seal is formed as a plurality of bristles and the bristles are mounted in the stator to project radially therefrom, across said g... | 08/18/1998 |
| 5794945 | Metal gasket This metal gasket comprises a bead base plate with first beads and a sub-plate stacked on the bead base plate. The sub-plate is made of a thick metal plate and formed with second and third beads and stepped portions. The second beads, the third beads and ... | 08/18/1998 |
| 5794939 | Thin faced balanced seal A mechanical seal 30 is disclosed comprising a sleeve 32 which is adapted to be affixed to the shaft 34 of a item of mechanical equipment, together with a rotary component 42 which carries a rotary seal face 44. Two O-ring grooves 46, 48 are provided on t... | 08/18/1998 |
| 5791654 | Corrosion resistant gasket in combination with aircraft antenna A corrosion resistant gasket combined with an aircraft antenna, and more particularly to encapsulation of a conductive mesh in a pliable fluorosilicone compound that will not become bonded to mating surfaces and will also migrate upon compression during i... | 08/11/1998 |
| 5791659 | Metal gasket The present invention comprises a pair of bead plates on which beads are formed, and an intermediate plate on which first and second stepped portions are formed. One of the bead plates is provided with auxiliary beads so as to prevent a full compression o... | 08/11/1998 |
| 5791677 | Hitch cover A hitch cover for preventing injury to individuals moving within the area located beneath the overhang portion of a fifth-wheel type camper trailer, the hitch cover including a cover member of an oversized solid one-piece foam rubber construction having a... | 08/11/1998 |
| 5788246 | Seal device for piston rod A piston seal device has a combined oil scraping ring that includes a steel annular oil scraping ring body having an M-, I- or H-shaped cross section, and an annular coil spring. The ring body has a cross-sectional cut at one location and includes an uppe... | 08/04/1998 |
| 5788247 | Composite gasket comprising surface formed tangs A composite gasket including facing material and a core material. The core material includes tanged portions which are formed by disturbing a surface of the core. The tang portions preferably terminate into pointed tips which penetrate the facing material... | 08/04/1998 |
| 5778726 | Device for monitoring a predetermined level of a liquid in a container For monitoring a predetermined level of a liquid in a container an ultrasonic sensor is fitted on the outer surface of the container wall at a measurement point situated at the height of the level to be monitored, said sensor containing an ultrasonic tran... | 07/14/1998 |
| 5772215 | Head gasket with improved armoring and method of making same A head gasket having a pair of armor assemblies with protective shim portions in the zones of adjacency of adjacent pairs of combustion openings. One armor's shim portions face one main surface of a main body of the gasket and the other armor's shim porti... | 06/30/1998 |
| 5772214 | Automatic shut down seal control An apparatus for automatically closing a shutdown seal on an open-drive centrifugal compressor to prevent the loss of refrigerant and damage to the seal, including a seal housing encompassing a rotor shaft, containing a shutdown seal and a running seal; t... | 06/30/1998 |
| 5772218 | Uniform compression gland seal assembly A gland seal assembly for a slurry pump comprising a main body having a bore therethrough for receiving a rotatable shaft, a packing receiving zone within the bore, the packing including at least two packing rings and a packing sleeve surrounding the pack... | 06/30/1998 |
| 5769427 | Dual seal with clean barrier fluid and dynamic pressure control A seal arrangement for a stuffing box, the stuffing box having an outboard seal an inboard seal exposed to process fluid, and a volume pressurized with barrier fluid in which the inboard seal and the outboard seal are disposed, has a container divided int... | 06/23/1998 |
| 5765836 | Sealing system The metal-to-metal sealing system includes a first seal configuration on one member of the connection and a second seal configuration on the other member. Each seal configuration includes an annular groove and an adjacent annular tooth. The annular groove... | 06/16/1998 |
| 5765838 | Sealing gasket made of expanded graphite, with opened thin-leaf surface structure An expanded graphite sealing material is provided in which the adaptability of the principal face of an expanded graphite base member is improved, the bonding strength to a coating layer and the like can be increased, and the sealing properties can be enh... | 06/16/1998 |
| 5758881 | Gas purge lip seal and seal assembly A shaft seal comprises a resilient sealing ring 1 with a peripheral sealing lip which is deflected axially in use so as to bear radially against a shaft. The sealing contact area 2 on the sealing lip is between predetermined limits, each defined by a chan... | 06/02/1998 |
| 5758882 | Screened gasket for high pressure fluid transmission applications A screened gasket for sealing a junction and filtering fluid flowing through the junction includes a sandwich-type structure with first and second gasket members holding a central screen securely therebetween. An inner seal annularly surrounds the screen ... | 06/02/1998 |
| 5755446 | Seal apparatus between a shaft and a non-linear inner surface of a housing A seal apparatus is disposed between two elements for providing an effective seal there between and for preventing damage to the seal apparatus due to cutting or blowout as the two machined elements move relative to one another. The seal apparatus consist... | 05/26/1998 |
| 5755136 | Device for monitoring a predetermined level of a liquid in a container For monitoring a predetermined level of a liquid in a container an ultrasonic transducer is fitted on the outer surface of the container wall at a measurement point situated at the height of the level to be monitored. The ultrasonic transducer when excite... | 05/26/1998 |
| 5755445 | Noncontacting finger seal with hydrodynamic foot portion The present invention provides an annular sealing apparatus for disposition in cooperation with a body defining a bore and a rotating member rotatably received in said bore to inhibit fluid leakage therebetween. The sealing apparatus is comprised of axial... | 05/26/1998 |
| 5749585 | Downhole tool sealing system with cylindrical biasing member with narrow width and wider width openings A sealing system, particularly useful for packers and anchors, is disclosed. The sealing element or elements are of a nonelastomeric material and are configured with a feature that can add a biasing force on one or both sides of the nonelastomeric sealing... | 05/12/1998 |
| 5749584 | Combined brush seal and labyrinth seal segment for rotary machines A brush seal is comprised of arcuate seal segments having ends cut in a radial direction with bristles "canted" at an approximate 45° angle relative to radii of the segments, leaving triangular regions adjacent one end of each segment devoid of bristles ... | 05/12/1998 |
| 5746434 | Chamber interfacing O-rings and method for implementing same Disclosed is a method for implementing a vacuum seal between an interface of a transport chamber interface port of a transport chamber and another chamber. The transport chamber being configured to mate with the another chamber in an adjacent relationship... | 05/05/1998 |
| 5743535 | Compression piston ring seal A sealing system for the compression ring (5) of a piston (1) of an internal combustion engine comprises placing an elastomeric material seal ring (15) behind the compression ring (5) to provide sealing to improve compression ratio and prevent loss of oil... | 04/28/1998 |
| 5738359 | Expandable band and locking mechanism for installing a flexible sealing element An expandable band and locking mechanism is used to install and secure a flexible sealing element, such as a rubber seal or gasket, against an internal annular surface, such as in a manhole or pipe. The expandable band is capable of expanding and being lo... | 04/14/1998 |
| 5737963 | Ultrasonic transducer A small, compact, easily mountable ultrasonic transducer for measuring the filling level in a container is provided, which transducer transmits virtually no oscillation energy to the container, having a can-shaped transducer housing (1), an electronics ho... | 04/14/1998 |
| 5735339 | Semiconductor processing apparatus for promoting heat transfer between isolated volumes Apparatus for promoting heat transfer between a first volume (chamber volume) and a second volume (expandable, substrate support platform volume). Specifically, the apparatus comprises: a chamber defining a chamber volume that contains a chamber atmospher... | 04/07/1998 |
| 5735532 | Seal compression limiting retainer A sealing assembly is disclosed for creating a seal between first and second mating members or components. The sealing assembly basically includes a seal retainer with one or more annular seals coupled thereto. The seal retainer includes a body portion co... | 04/07/1998 |
