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| Number | Title | Issue Date |
| 7654535 | Non-contacting face seals and thrust bearings The apparatus, which can be used in aspirating face seals or thrust bearings, spaces two relatively rotatable facing surfaces in use by entraining gas between the surfaces. The apparatus includes a first portion (1) defining a generally frusto-conical surface... | 02/02/2010 |
| 7377518 | Mechanical seal ring assembly with hydrodynamic pumping mechanism A seal ring configuration adapted to be disposed about a shaft to seal a fluid at a pressure differentials across the seal. The seal ring configuration comprises a mating ring and an axially movable primary ring. The primary ring includes a seal face in opposing rel... | 05/27/2008 |
| 7303380 | Rotary engine with improved seal assembly Corner seal sockets (26) are formed at the end of apex seal slots (58) formed in a rotor (10). A twisted split washer spring (70) is positioned in each socket (26) between the base wall (28) of the socket (26) and the... | 12/04/2007 |
| 7275919 | Rotary engine seal assembly Corner seal sockets (26) are formed at the end of apex seal slots (58) formed in a rotor (10). A twisted split washer spring (70) is positioned in each socket (26) between the base wall (28) of the socket (26) and the... | 10/02/2007 |
| 7174990 | Tangential stress reduction system in a loudspeaker suspension The invention is a suspension element having an outer edge and an inner edge. The suspension element, such as a spider or surround, varies in shape along at least a portion of the suspension element to help relieve both the radial and tangential stress placed on the... | 02/13/2007 |
| 6726213 | Bi-direction rotatable face seal with spiral grooves A bi-direction rotatable face seal with spiral grooves is provided comprising: a rotating ring with a sealing face sealed and fixed on a rotary shaft; a stationary ring with a sealing face mounted in a casing, which is sealed and axially aligned by means of an elast... | 04/27/2004 |
| 6550778 | Axial face seal An axial face seal has a sliding ring and/or a counter-ring for use with an elastic roll body. The ring has a seal leg having a sliding surface, and a supporting portion with a conical circumferential surface outside of the sliding surface for accommodati... | 04/22/2003 |
| 5911630 | Flexible gear coupling The flexible gear coupling comprises a seal member 14 axially slidably disposed on the outer circumference surface of the connection portion 13b of the pinion 13, the each opposite end of the seal member 14 having a spherical seal surface 14a of the prede... | 06/15/1999 |
| 5722667 | Seal assembly for use between planar surfaces having opposed grooves to receive and hold the seal assembly A seal assembly for use between a pair of abutting planar surfaces with opposed grooves which combine to form a seal groove to receive the seal assembly. The seal assembly includes a stiffly flexible body element having portions which surround, protect an... | 03/03/1998 |
| 5716277 | Seal for a universal joint trunnion An elastomeric seal assembly for use with a bearing cup mounted on a trunnion of a universal joint cross member includes an elastomeric seal attached to a metallic support ring. The metallic rings are pressed into the open ends of the bearing cups and are... | 02/10/1998 |
| 5577739 | Mechanical seal with angular sealing surface An improved mechanical seal of the type useful to form a seal between a stationary housing and a rotatable shaft having a shaft axis extending through an opening in the housing. The mechanical seal has stationary components and rotatable components. The s... | 11/26/1996 |
| 5529319 | V-notch seal for non-flooded zone of disc filter valve A circumferential seal for a disc filter valve to rotary collection pipe is formed by a radially compliant circumferentially restrained and tensioned seal disposed in a split "V" notch formed in a non-flooded zone between the stationary valve plate and th... | 06/25/1996 |
| 5492337 | Rotary spring loaded seal assembly A seal assembly for a vehicle wheel assembly is provided for use between its two relatively rotatable coaxial parts, to seal the bearing chamber. The seal assembly includes a pair of nested casings forming a C-shaped recess in cross section. An annular wa... | 02/20/1996 |
| 5435576 | Spring gasket A gas pressure differential sealing ring for forming a seal between a pair of annular surfaces which are rotatable with respect to one another about a common axis to be used, for example, in the compressor portion of a turbojet engine, is disclosed. The s... | 07/25/1995 |
| 5431413 | Seal incorporating an encoder A disk mountable on a rotating support has one side at least partially covered with an elastomer loaded with magnetic particles to form an encoder while the other side of said disk axially limits an annular chamber. A sealing structure attached to the dis... | 07/11/1995 |
| 5368311 | Shaft seal assembly for a rotary valve A rotary valve which is particularly useful in handling foodstuff or materials which will not tolerate cross-batch contamination, the valve including a housing having an inlet and an outlet which may be connected to a pneumatic conveying duct or the like,... | 11/29/1994 |
| 5342065 | Inflatable seal arrangement A seal arrangement for the gap between a surface of an element rotating around its axis which is to be sealed, and a seal carrier at a distance from it. The seal arrangement includes a sealing ring of a polymeric material, which is at least partially surr... | 08/30/1994 |
| 5312117 | Mechanical seal A mechanical seal for preventing the leakage of fluid through the rotary sliding contact surfaces, in which a contact surface is provided with a plurality of fine one-way grooves having outer closed end portions. The fine grooves which are inclined outwar... | 05/17/1994 |
| 5263724 | Segmented seal for rotary equipment A sealing assembly for effecting a rotary seal between a stationary housing (5) and a rotary drum (1) by a number of arcuate sealing segments (8) engaging a radial sealing surface (6) on the housing (5) and a non-radial sealing surface (3) on the rotary d... | 11/23/1993 |
| 5232292 | Sealed bearing with mounting grooves for sealing members A sealed bearing includes inner and outer race rings, roller members disposed therebetween, and built-in sealing members for sealing the space in which the roller members are situated. The outer race ring is equipped with a mounting groove 5 for each seal... | 08/03/1993 |
| 5149207 | Seal for bearings of motor vehicle wheel hubs A seal device for wheel hub bearings consists of a centrifugation device (1) equipped with a seal (3) and a screen or shield (2) mounted onto the outer fixed race (11). The centrifugation device (1) is fixed to the inner rotating race (10) of the bearing.... | 09/22/1992 |
| 5068564 | End retainer ring assembly for rotary electrical devices A rotary electrical device has a rotor body for receiving an inner retaining ring. A primary retaining ring is formed of a composite of epoxy and graphite fibers and has an integrally embedded auxiliary ring at one end thereof adjacent its open end. The a... | 11/26/1991 |
| 5042822 | Seal with two sealing rings A seal for closing the radial space between two coaxial, radially spaced, relatively rotatable parts. Each of an axially inner and an axially outer sealing ring comprises an approximately L-shaped metal part having sealing lips of elastic plastic material... | 08/27/1991 |
| 4948271 | Bearing structure with improved lubricating seals for supporting shaft element A tapered roller bearing having an inner ring and an outer ring, each respectively having a tapered race, a plurality of tapered rollers, a cage which retains the tapered rollers at an even interval in the circumferential direction and first and second se... | 08/14/1990 |
| 4923377 | Self-machining seal ring leakage prevention assembly for rotary vane device A low internal leakage, rotary vane gas compressor utilizing a housing having a generally elliptical cavity, whose outer boundary is defined by an inner stator wall. A shaft mounted rotor is disposed offset from the central axis of the cavity, with an end... | 05/08/1990 |
| 4915265 | Apparatus for feeding bulk material A rotary feeder includes a housing which accommodates a rotor including a plurality of vanes supported on a shaft. The rotary feeder is sealed in axial direction by slide rings which are acted upon by a pressure fluid and in radial direction by displaceab... | 04/10/1990 |
| 4856916 | Conducting rolling bearing In a conductive rolling bearing comprising an inner ring (11), an outer ring (12), a plurality of rolling elements (13) mounted between the inner ring and the outer ring, and seal members for sealing the space between the inner ring and the outer ring, th... | 08/15/1989 |
| 4836561 | Wavy-tilt-dam seal ring A unique wavy-tilt-dam shaped mechanical face seal ring, a mechanical face seal which incorporates the wavy-tilt-dam shaped ring, and an apparatus for shaping seal rings. The face shape of the ring is contoured to include a number of waves, tilts and a da... | 06/06/1989 |
| 4818469 | Seal for turning valve bodies, in particular for valves in nuclear-engineering plants The seal for turning valve bodies, in particular for valves in radioactive lants, is composed of a molded element of flexible graphite which is coated with a thin, flexible tantalum layer. The tantalum enclosure surrounds the graphite molded element, prefe... | 04/04/1989 |
| 4795169 | Radially stable mechanical face seals A mechanical face seal has a first seal face member mounted in fixed rotational and radial relationship to one component and sealed with respect thereto; abutment means mounted in fixed rotational and radial relationship to a second component and sealed w... | 01/03/1989 |
| 4790543 | Sealing device governed by centrifugal force A sealing device for a slot between two elements, which are rotatable relative to each other, e.g. an outer and an inner race ring in a rolling bearing, incorporates a flexible sealing portion having a lip, which contacts a sealing surface surrounding the... | 12/13/1988 |
| 4759554 | Mechanical face seals A mechanical face seal comprises a first seal face member associated in fixed relationship and sealed with respect to one component, a second seal face member associated in fixed rotational relationship and sealed with respect to a second component and a ... | 07/26/1988 |
| 4709629 | Roll with pressure chamber for detection control In a floating roll the abutment faces of the transverse seals at the crosshead are not radial or axial but have an orientation corresponding to a spherical surface, the center of which is situated in the center of the adjacent bearing on which the cylinde... | 12/01/1987 |
| 4693481 | Film-riding shaft seal formed from high-purity silicon nitride An improved shaft seal for sealingly and rotatably mounting a torque-transmitting shaft within the pressurized housing of a pump. Generally, the shaft seal comprises a seal ring which is sealingly mounted within the housing, and a runner ring which is sea... | 09/15/1987 |
| 4643594 | Sealed rolling bearing A sealed rolling bearing in which the seal consists of a sealing lip and a sealing projection connected to a sealing body. When the sealing body is seated in a groove formed in the outer ring, the sealing lip abuts a side surface of a groove formed in the... | 02/17/1987 |
| 4643438 | Axial oil seal of a rotary piston engine An axial oil seal of a rotary piston internal combustion engine of trochoidal type of construction having a housing that consists of two side plates and a two-lobed or dual-curvature mantle runway with an eccentric shaft passing through the housing and in... | 02/17/1987 |
| 4595206 | Seal with inner and outer slidably contacting rings A seal for a shaft relatively rotatable in an opening in a structure has concentric inner and outer rings. The outer ring is fixed across the opening and has an inwardly-open groove with axial boundary surfaces which converge toward each other outwardly f... | 06/17/1986 |
| 4558873 | Mechanical seal A mechanical seal for pumps utilized in harsh environments such as coal/oil slurries or the like, where an annular head assembly is disposed in an annular recess in the pump housing, through which a rotatable shaft is journalled. A rotor, biased by a spri... | 12/17/1985 |
| 4553762 | Shaft seal ring A seal ring has a reinforcing ring with an inwardly-directed conical extension and a lip ring having elastic properties which embraces said extension in the manner of a U for a relatively-rotatable seal and bears on the shaft to be sealed as a static seal... | 11/19/1985 |
| 4535803 | Plug valve A plug valve is provided with a stem seal wherein a generally frustoconical face is provided at the juncture of stem and plug and the seal is fixed against the frustoconical face with a predetermined constant load.... | 08/20/1985 |
