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| Number | Title | Issue Date |
| 8128097 | Mechanical seal The present invention provides a mechanical seal preventing the deformation of the cartilage and exhibiting a good sealing performance. In said mechanical seal, the deformation of the back portion of the cartilage due to the force from the pump housing is absorbed b... | 03/06/2012 |
| 7594663 | Rotating seals for cell processing systems The invention provides an improved rotating seal apparatus including a plurality of concentrically spaced annular rotating seals. The invention also provides a rotating seal apparatus including a pressurized annular chamber surrounding an annular rotating seal. ... | 09/29/2009 |
| 7427071 | Divided driver device for a slip ring seal A divided driver device (5) for a mechanical face seal for non-rotatable assembly on a rotary component and for the transmission of a torque to a seal ring (2) held in non-rotatable manner on the driver device. The driver device (5) is divided i... | 09/23/2008 |
| 7416224 | Sliding ring fixing A device for fixing the sliding ring of an axial sliding ring seal for an axial rotary transmission leadthrough to a sliding ring support includes a conically tapered radial outer casing surface of the sliding ring and a holding apparatus designed as a cap nut and h... | 08/26/2008 |
| 7219898 | Spring supported dual element face seal with a run surface sleeve The invention provides a seal for a rotatable shaft. The seal includes an inner case mountable to the shaft and having a body and first and second flanges extending radially outward from the body. The seal includes first and second sealing discs operable to seal aga... | 05/22/2007 |
| 7182016 | High pressure fluid cylinder system A high pressure fluid jetting system generally includes a fluid cylinder pump, a drive assembly, a pressurized liquid supply and an applicator gun. The drive assembly includes a diesel or electric powered motor which drives a rotatable drive shaft. The drive shaft d... | 02/27/2007 |
| 7017913 | Axial shaft seal An axial shaft seal disposed between a housing wall and a rotating shaft includes an outer ring insertable into the housing wall in a stationary and sealing manner and an inner ring connectable to the shaft in a non-twisting and sealing manner. The outer ring includ... | 03/28/2006 |
| 6921090 | Diaphragm for sealing openings in pressure vessels An improved diaphragm for use with a gasket to prevent leakage of a pressurized fluid. The diaphragm has an internal groove which uses strong spring back and the pressure of the fluid to increase the gasket seating load, thereby providing a self-energizing seal whic... | 07/26/2005 |
| 6886832 | High pressure fluid cylinder system A high pressure fluid jetting system generally includes a fluid cylinder pump, a drive assembly, a pressurized liquid supply and an applicator gun. The drive assembly includes a diesel or electric powered motor which drives a rotatable drive shaft. The drive shaft d... | 05/03/2005 |
| 6774622 | Vehicle wheel bearing, wheel-speed sensor mechanism assembly, and wheel speed sensor A wheel-speed sensor mechanism assembly, a vehicle wheel bearing including such assembly and a wheel speed sensor. The assembly includes a vehicle wheel-speed sensor mechanism (such as, but not limited to, an ABS wheel-speed sensor mechanism), a sensor-mechanism hou... | 08/10/2004 |
| 6761359 | Spacing element for centering components in a mechanical seal and for promoting circulation of a seal fluid therein A mechanical seal for mounting to a stationary housing that contains a rotating shaft is provided. The mechanical seal employs an inboard mounted spacer element to provide axial and radial spacing between a holder and a gland. In addition to providing selected axial... | 07/13/2004 |
| 6749202 | Face seal cartridge A face seal cartridge to facilitate the operation of a shaft and a bore forming a sealed rotating assembly is disclosed. The face seal cartridge includes first and second sealing members to form the face seal, and first and second o-rings and cartridge walls which a... | 06/15/2004 |
| 6685191 | Mechanical seal for rotating shaft An improved mechanical seal for a pump includes a seal cartridge slidably received inside an end plate. The cartridge includes an outer cylindrical stator member which is slidably received in the end plate and an inner cylindrical rotor which is rotatable... | 02/03/2004 |
| 6679678 | Increased wear-life mechanical face seal anti-rotation system One or more stator seal assemblies are mounted in the housing of a rotating machine such as, for example, an air turbine starter for a gas turbine engine, and surround a rotating shaft. The seal assemblies each include a seal case and a seal. The seal has... | 01/20/2004 |
| 6474652 | Shaft seal device A shaft seal device is provided which is capable of sealing a rotary shaft in a positive and reliable manner without requiring a periodical lubricant-supplying operation, and is free from contamination of its environment, products, etc. by splashing of ex... | 11/05/2002 |
| 6439577 | Rotating seals for cell processing systems The invention provides an improved rotating seal apparatus including a plurality of concentrically spaced annular rotating seals. The invention also provides a rotating seal apparatus including a pressurized annular chamber surrounding an annular rotating... | 08/27/2002 |
| 6213471 | Seal assembly with stabilized seal rings Metal-to-metal face seals are commonly used between relatively rotating components to maintain a quantity of lubricating fluid within one component while keeping dirt and abrasives from entering. The positioning of the sealing faces of the seal rings is c... | 04/10/2001 |
| 6210103 | Rotary seal and/or bearing For an impeller pump, the seal/bearing unit has two rotor-stator pairs of tapered sleeves arranged back-to-back. The sleeves have a spiral groove, and convey barrier-liquid from an entry-mouth in an entry-chamber to an exit-mouth in an exit-chamber. Havin... | 04/03/2001 |
| 6186510 | Mechanical contact bearing seal A mechanical face-type seal assembly which provides substantially annular, axially biasing force along the annular seal created between the rotary seal face and the stationary seal face of the seal assembly. The device preferably employs a substantially a... | 02/13/2001 |
| 6186511 | Seal assembly with an interlocking load ring A face seal assembly comprises a pair of confronting seal rings having mutually-engaging seal faces. The seal faces are maintained in sealing engagement by a pair of resilient load rings that are positioned between the seal rings and a pair of housings th... | 02/13/2001 |
| 6003875 | Gland assembly for use with mechanical seal A mechanical seal assembly having multiple compression spring assemblies that are used to bias a stationary seal into sealing engagement with a rotating seal, the springs in the spring assemblies being supported on their internal diameter and having their... | 12/21/1999 |
| 5947480 | Sealing unit for rotating shaft A sealing unit for sealing an opening through which a rotating part passes. A rotary ring turns within a housing when a pair of flexible rings carried by the rotary ring are turned by engagement with a rotating part. The opposed faces of the rotary rings ... | 09/07/1999 |
| 5820130 | Mechanical seal for movable joints of machines The mechanical seal for movable joints of machines comprises at least two pairs of nonelastomer cylindrical rings (4, 5, 16) ground to each other with their faces and having their outer surfaces eccentrically displaced, and the rings themselves cooperate ... | 10/13/1998 |
| 5794476 | Self-aligning flexible gear support for auxiliary gear box A flexible gear support for a PTO gear box for an internal combustion engine is a relatively inexpensive unitary structure comprising two concentrically spaced rings which are engaged together by a flexible web extending therebetween. The gear support rep... | 08/18/1998 |
| 5758880 | Self piloting seal head assembly A self piloting seal assembly for use on a rotatable shaft pump unit, the seal assembly including a seal head assembly in constant contact with a seal seat assembly. The seal head assembly includes an elastomer boot, a spring seat, a ferrule and a spring ... | 06/02/1998 |
| 5421592 | Unitized radial and facial seal A unitized radial and facial seal assembly intended for use between radially inner and outer relatively rotationally and axially movable members includes a counterface for securement to the radially inner member and a bearing fixed to the counterface for ... | 06/06/1995 |
| 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 |
| 5348312 | Cassette seal A cassette seal for sealing off the gap between a bore hole and a shaft. The seal includes an inner ring which is secured to the shaft and has a groove open radially to the outside. The seal also includes an outer ring secured in the bore hole with a radi... | 09/20/1994 |
| 5340121 | Face seal with integral fluorocarbon polymer bellows A mechanical seal assembly is provided for inhibiting a fluid located in a higher pressure region of an apparatus from flowing to a relatively lower pressure region. The seal assembly is configured for cooperation with a seal ring connected to a cylindric... | 08/23/1994 |
| 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 |
| 5183269 | Unitized grit seal with removable thrust bumper A unitized, fluid seal assembly for heavy duty applications. The seal assembly includes a primary seal unit, an annular wear sleeve, and a separately formed thrust bumper made from a stiff but resilient, high temperature resistant, lubricous plastic mater... | 02/02/1993 |
| 5098112 | Unitized dynamic facial seal A dynamic seal assembly is intended for use as a facial seal between radially inner and outer relatively rotating members having a seal body mounted on a generally L-shaped annular ring, a counterface mounted on the inner of the relatively rotating member... | 03/24/1992 |
| 5096207 | Cartridge seal with dual lipped secondary seal A cartridge seal is described where the outer ring 1 and the inner ring 4 are inseparably joined to each other. The outer ring has a circumferential groove 2 which is axially open in a direction toward the outside 14 and which is engaged by a first and se... | 03/17/1992 |
| 4962936 | Sealing unit A unitized seal (A) for sealing between a stationary shaft (16) and the bore of a rotating housing is comprised of a rotary member (1) having an outer cylindrical portion (1a), a flange portion (4) extending radially inwardly from one end of the cylindric... | 10/16/1990 |
| 4848776 | Exclusion seal assembly A seal assembly (22 or 50) including a primary seal (26), an exclusion seal (28 or 52), and a contaminant absorbing material (30 or 54). The exclusion seal and absorbing material extend the life of the primary seal. The exclusion seal is of the face seal ... | 07/18/1989 |
| 4815747 | Face type seal assembly A seal cartridge for providing a fluid seal between a rotating shaft and a housing such as found in a centrifugal pump. The seal cartridge includes rotating and non-rotating seal portions which prior to installation are maintained in alignment and carried... | 03/28/1989 |
| 4779876 | Drive for banded washer type seal An improved drive for a banded sealing ring or washer in a rotary mechanical seal. The washer, usually a ceramic washer, is provided with an annular band surrounding its outer periphery which includes an outwardly extending flange. The seal includes a sle... | 10/25/1988 |
| 4763905 | Seal retention and anti-rotation locking assembly A seal retention and anti-rotation locking assembly (20) positioned within an aircraft wheel hub (10). The wheel hub (10) has a plurality of eccentric grooves (24) disposed about the periphery of an opening (12), the eccentric grooves (24) receiving there... | 08/16/1988 |
| 4754981 | Unitized face sealing device A unitized face sealing device comprising first and second annular face sealing rings which can rotate relatively to each other and which have interengaging sealing faces, said rings being located within a unitizing casing, resilient means acting between ... | 07/05/1988 |
| 4733978 | Contact type flexible seal for bearings A sealing system for sealing the space between relatively rotatable members comprising a rigid support element and an annular elastomeric sealing element having an internal radial annular lip extending radially and axially from an annular root portion of ... | 03/29/1988 |
