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| Number | Title | Issue Date |
| 7931278 | Seal assembly for a rotary member There is described a seal assembly for sealing the gap between a rotary member and a fixed member, so as to prevent passage of a fluid from a first to a second environment located on opposite sides of the gap; the seal assembly has a first ring integral with the rot... | 04/26/2011 |
| 7239216 | Semiconductor memory device with data bus scheme for reducing high frequency noise A semiconductor memory device includes memory modules which have memories and a data bus which transfers data to the memory modules, in which the data bus comprises a low frequency band data pass unit which removes the high frequency component of the data and sends ... | 07/03/2007 |
| 7217105 | Integrated pump and wash pump A pump apparatus is provided which comprises a first displacement pump and a ceramic valve construction formed of a ceramic rotor, a ceramic stator having flat surfaces which are positioned in sealing relationship and a second displacement pump having check valves. ... | 05/15/2007 |
| 7214039 | Integrated ratio pump and check valve apparatus A pump apparatus is provided which comprises a plurality of displacement pumps each connected to a check valve apparatus. The displacement pumps each comprises a reciprocating piston within a housing having an interior wall spaced apart from the piston. The check va... | 05/08/2007 |
| 7172201 | Sealing ring, especially radial shaft seal A sealing ring has a sealing disk having a fastening part and a seal part. The fastening part is connected to a first stationary machine part and the seal part seals a movable machine part and is oriented in an axial direction toward an atmosphere side or a medium s... | 02/06/2007 |
| 7125020 | Vented high pressure shaft seal A rotary fluid pressure device (11) having a housing (13,31), inlet and outlet ports (21,23), a gerotor gear set (15), a valve member (51) and an input-output shaft (49). A seal assembly (73) is disposed radially betw... | 10/24/2006 |
| 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 |
| 7070017 | Rotating apparatus for construction machine A swing mechanism for a construction machine having a grease bath seal. A grease bath can be disposed on a vehicular base carrier of the machine, and can be coupled with a swing frame. The grease bath seal can then act to prevent intrusion of pollutants or other for... | 07/04/2006 |
| 7066927 | Vented seal having redundant sealing components A seal having a body and several bands extending away from the body. The bands extend around an axial portion of the body. In some embodiments, the bands project from and are formed integral with the body. For example, the bands can be rings. Two bands can be locate... | 06/27/2006 |
| 7025506 | Removable mortar mixer bearing and seal assembly A bearing and seal assembly for supporting and sealing end portions of a rotatable paddle shaft in the end walls of a mortar mixer or the like. Each bearing and seal assembly includes a bearing and seal housing removably attached to an end wall of the mixer drum by ... | 04/11/2006 |
| 6971651 | Device for sealing a space In a multi-chamber device a chamber with lubricant is sealed off on a rotationally drivable component from a second chamber at a peg of a power tool, by at least one seal sliding at a contact face, and least one stationary component is provided in the chamber with l... | 12/06/2005 |
| 6951337 | Shaft seal with elastic sealing lip A V-ring seal is disclosed for sealing between relatively rotatable surfaces in which the V-ring seal comprises PTFE and includes a body with an inner side for abutting against a first surface and a lip extending from the body towards a second surface, the lip inclu... | 10/04/2005 |
| 6945536 | Oil seal A two liquid type oil seal 10 having a first seal 13 and a second seal 14, is provided with a communication hole 16 in the first seal 13. The communication hole 16 communicates a space 24 defined by the first and seco... | 09/20/2005 |
| 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 |
| 6921082 | Lip sealing ring A lip sealing ring for a relatively movable machine element (1), including a flexible sealing lip (2) made of polymeric material which adjacently encloses the machine element (1) in the region of a sealing gap (3) under elastic prestressi... | 07/26/2005 |
| 6802511 | Seal end plate A seal end plate is configured and dimensioned to surround the neck of a horizontal roll in a rolling mill and comprises a circular body having a shoulder projecting axially from its outboard side. At least one well is provided on the shoulder, and a drainage passag... | 10/12/2004 |
| 6676132 | Seal and rotary assembly using the seal The object of the present invention is to improve sealing performance of a seal under a specific environment. The seal is arranged in an annular space A in which a rotary shaft 1 and a housing 2 face each other, and partitions the annular space in axial d... | 01/13/2004 |
| 6663110 | Hydrophobic shaft seal A seal assembly seal assembly includes an outer member, an inner member, and a resilient member therebetwen. The resilient member is located between an inner diameter of the outer member and an outer diameter of the inner member. The resilient member incl... | 12/16/2003 |
| 6612583 | Bearing seal A bearing seal with a flat elastic sealing lip (2), positioned between an outer bearing ring (3) and an inner bearing ring (4) with an inner sealing edge (5), sliding circumferentially on the inner bearing ring (4). One surface of the sealing lip (2) faci... | 09/02/2003 |
| 6561519 | Dual seal A pair of spaced apart radial shaft seals are held together by an interlocking pair of support members. The support members form an inner cavity which is in flow communication with the annulus between the shaft seals and the shaft. The inner cavity is ven... | 05/13/2003 |
| 6481720 | Stern tube sealing apparatus The invention provides a stern tube sealing apparatus which prevents an abrasion by cooling and lubricating a sliding contact surface of a first seal ring, prevents a foreign substance and a seawater from entering so as to further improve a durability of ... | 11/19/2002 |
| 6428015 | Liquid seal structure A liquid seal structure has a tapered seal land provided on an outer circumference of a rotation shaft with an outer circumference on a sealing liquid side being diametrally larger than an outer circumference opposite to the liquid side, a tapered seal li... | 08/06/2002 |
| 6293558 | Gasket for a rotating shaft and a device incorporating such a gasket A gasket is inserted between a housing filled with pressurized oil and a rotating shaft projects out from said housing. This gasket has two sealing lips which delimit between them a collecting chamber provided with a discharge passage for lubricant. A cal... | 09/25/2001 |
| 6264447 | Air-cooled shaft seal An air-cooled shaft seal comprises an annular body having an inner surface and an outer surface. One or more helical channels are formed on the inner surface. A plurality of external surfaces such as radial fins are disposed in axially spaced relationship... | 07/24/2001 |
| 6179594 | Air-cooled shaft seal An air-cooled shaft seal comprises an annular body having an inner surface and an outer surface. One or more helical channels are formed on the inner surface. A plurality of external surfaces such as radial fins are disposed in axially spaced relationship... | 01/30/2001 |
| 6145558 | Seal arrangement for a central tire inflation system The present invention relates generally to work vehicles having a central tire inflation system provided to maintain proper tire inflation for the work vehicles. In particular, the invention relates to a seal arrangement for an inflatable wheel connected ... | 11/14/2000 |
| 6129533 | Sealing system for rotating component of a pump The invention relates to a fluid-conveying machine, in particular, a pump having a component rotating in a stationary housing part inside an annular gap. The stationary housing part separates an interior having a higher product pressure from an exterior h... | 10/10/2000 |
| 6109618 | Rotary seal with enhanced lubrication and contaminant flushing A resilient, ring shaped interference-type hydrodynamic rotary seal having waves on the lubricant side which provide increased film thickness and flushing action by creating contact pressure induced angulated restrictions formed by abrupt restrictive dive... | 08/29/2000 |
| 5823541 | Rod seal cartridge for progressing cavity artificial lift pumps A seal cartridge particularly suitable for artificial lift pump rod sealing and for other applications where a rotating drive shaft penetrates a pressurized reservoir which is filled with abrasive-laden liquids, mixtures or slurries. The cartridge exploit... | 10/20/1998 |
| 5799949 | Annular chamber seal Internal and external metal-to-metal radially interfering seals are provided for an annular chamber. Typically, an annular chamber is used in tubular goods to be part of the hydraulic control circuitry, such as for operating subsurface equipment such as a... | 09/01/1998 |
| 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 |
| 5730415 | Flush valve triple seal handle packing A toilet flushing device has a body with an inlet and an outlet. There is a valve seat in the body in the flow path between the inlet and the outlet and a valve in the body movable toward and away from the valve seat to control water flow through the toil... | 03/24/1998 |
| 5727794 | Lip seal assembly A seal assembly (1) wherein two sealing rings (2) of the same shape and size are connected integral with each other, coaxially with a common axis (3), and in a position wherein they are rotated in relation to each other about the common axis (3); the seal... | 03/17/1998 |
| 5683278 | Stern tube seal with a pressure control system to adjust to the changing draft of ocean-going ships A system to adjust to the changing draft of ocean-going ships on the aft seal system equipped with several outwardly-directed gaskets and one inwardly-directed gasket, in which, between each two outwardly-directed gaskets a ring-shaped chamber is reserved... | 11/04/1997 |
| 5673919 | Sealing arrangement with elastomeric sleeve and surrounding receptacle supported by separate housing shoulders A sealing arrangement for an actuator, in particular a valve stem, that is movably mounted in a housing, includes a single-piece, profiled seal body which encircles the actuator in form of a sleeve. The seal body bears upon the actuator under bias and has... | 10/07/1997 |
| 5667225 | Self-draining shaft seal with wedge-shaped trough A shaft seal includes a plurality of axially spaced annular sealing rings which define oil collection channels. A radial drain aperture extends from the bottom of each channel into an interior trough which extends axially to a discharge orifice in a front... | 09/16/1997 |
| 5643026 | Safety device for seal systems for propeller shafts on ships A safety device on an aft seal system equipped with at least two gaskets for a ship's propeller shaft, which propeller shaft is sealed with respect to the outside water and with respect to a lubricant chamber, and on which a ring-shaped chamber is reserve... | 07/01/1997 |
| 5562406 | Seal assembly for fluid pumps and method for detecting leaks in fluid pumps or fluid containment devices The seal assembly comprises a housing, a shaft, seals, and a reservoir. The housing has a hollow section bounded by a cylindrical surface and a first curved protrusion. The housing has a first channel and a second channel extending from the hollow section... | 10/08/1996 |
| 5503480 | Sealing device for passage of fluid through a bearing, and bearing equipped with said device The sealing device (8) for the passage of a fluid between a rotating race and a non-rotating race of a bearing each penetrated by channels (6, 7) for the passage of the fluid, comprises a one-piece annular central body (9) of elastic material having a cir... | 04/02/1996 |
| 5492416 | Rolling element bearing system with a filtering seal A rolling element bearing system comprises at least one rolling element bearing with an outer race and an inner race which enclose a space containing rolling elements, which space is confined to the outside by sealing rings. At least one of the sealing ri... | 02/20/1996 |
