Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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| Number | Title | Issue Date |
| 8128095 | Mechanical shaft seal An improved mechanical shaft seal to give a tight seal between relatively rotating machine parts and prevent the escape of particulate material into the atmosphere or into the mechanical components of the housing under adverse operating conditions. The seal provides... | 03/06/2012 |
| 8083235 | Dynamic sealing A dual seal accommodates radial and axial movement, and accommodates positive and negative pressure differentials, when in sealing engagement about a rotating shaft. ... | 12/27/2011 |
| 7909333 | Unitized seal assembly having soft retention and debris expulsion features A seal assembly has an inner wear sleeve with an axially extending tubular body. A flange extends radially outwardly from the body. An outer seal component has an axially extending tubular outer wall with a flange extending radially inwardly therefrom to support at ... | 03/22/2011 |
| 7648143 | Tandem dual element intershaft carbon seal A sealing system for use with at least one rotating shaft has a tandem seal arrangement contacting a surface of the at least one rotating shaft. The tandem seal arrangement includes at least one pair of segmented ring assemblies. Each of the segmented ring assemblie... | 01/19/2010 |
| 7611150 | Sealing device comprising a two-piece annular body Disclosed is a sealing device (16) for a rotatably mounted roll (15). Said sealing device (16) comprises at least one annular body which sits on a roll neck (2), encompasses said roll neck (2), and is provided with at least one out... | 11/03/2009 |
| 7367739 | Two component seal A pair of pivoting parts are held together with a pin, with a first part, such as a rod end of a hydraulic actuator, positioned between two flanges of a bracket, with the flanges having surfaces mating with sides surfaces of the rod end. A seal is placed in each of ... | 05/06/2008 |
| 7314218 | Externally mountable spiral adaptor An adaptor that can be used with rotary fluid equipment will protect mechanical seals and/or packing material adjacent a seal cavity (18) of the equipment. The adaptor includes an annular body (30) with a central bore (32) adapted to receive a s... | 01/01/2008 |
| 7314219 | Shaft seal assembly A seal assembly provides a seal between a housing member and a shaft member extending through a bore formed in the housing member. The seal assembly comprises a seal member mounted to the housing member within the bore and about the shaft member and extending radial... | 01/01/2008 |
| 7270875 | Gland packing A gland packing characterized in that a water swelling mineral is stuck or impregnated into a surface or an inner part of a gland packing base material. The water swelling mineral is preferably water swelling mica. This gland packing substantially eliminates seizing... | 09/18/2007 |
| 7240904 | Secondary sealing element A secondary sealing element comprises a base body (12) made of a synthetic material and comprising a base portion (13) and a seal portion (14) which each comprise coaxially aligned, axially adjacent through bores (17, 31) for the passage ... | 07/10/2007 |
| 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 |
| 7156400 | Slinger and wear sleeve seal assembly A seal assembly provides a rotating portion and a rotationally fixed portion. The rotating portion includes a running sleeve, a slinger segment and an upper seal segment. The slinger segment radially extends outward of the fixed portion so as to protect the fixed po... | 01/02/2007 |
| 7147229 | Shaft seal assembly with retaining ring and washer A shaft seal assembly (10) features an annular carrier (14), an annular shaft seal element (16) and an annular felt washer (18) in an integral assembly that can be installed in one step using a simple push-on tool. The washer (18) ... | 12/12/2006 |
| 7134670 | Rotation shaft seal A rotation shaft seal provided with a rubber sealing portion which contacts a surface of a rotation shaft and an outer case to which the rubber sealing portion is unitedly fixed. The outer case has an inner brim portion on an inner end portion on a sealed fluid side... | 11/14/2006 |
| 7131201 | Coupling device and improved method of assembly thereof A coupling device (11) and method of assembly, the device being of the type including a plenum member (17) disposed at one axial end of the coupling housing (13,15), the method comprising configuring the plenum member (17) such that each ... | 11/07/2006 |
| 7121551 | Bushing arrangement for seal cavity protection in rotating fluid equipment An arrangement (120) of members for a throat bushing for rotary fluid equipment includes a first member (122) that is useful for seal cavities that contain conventional packing, and a second bushing member (132) that will be used in conjunction ... | 10/17/2006 |
| 7066467 | Sealing device for water pump bearings A sealing device for a water pump bearing employs a seal member without an axial lip, and having only a radial lip. The sealing device includes an annular seal member which is fixed to a shoulder portion of one end in an axial direction of an outer race of a water p... | 06/27/2006 |
| 7066471 | Lip-type shaft seal A lip-type shaft seal is made of elastic material with a Shore A hardness of ≦75, includes a radial sealing lip, which has a sealing edge to bear against a rotating component and terminates in a axial sealing lip, which has a sealing edge to rests in installed sta... | 06/27/2006 |
| 7055825 | Shaft sealing apparatus Herein disclosed is a shaft sealing apparatus which comprises a vacuum casing formed with a vacuum chamber, a driving shaft having an outer cylindrical surface and movably extending in the vacuum chamber of the vacuum casing, and a sealing ring in the form of an ann... | 06/06/2006 |
| 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 |
| 6945535 | Seal A seal, especially for shafts movable in a translational direction, has at least one static sealing area and at least one dynamic sealing area and another sealing point outside of the dynamic sealing area. The other sealing point is formed by at least two elements f... | 09/20/2005 |
| 6866270 | Sealing device for cylinder bearings A C-section ring fixed on a steel-mill roll and coaxially surrounding its stub has inner and outer axially extending legs defining an axially open cavity. The inner leg is tapered away from the roll and is formed adjacent the free end with a radially outwardly open ... | 03/15/2005 |
| 6783129 | Sealing device A seal device (31) for a bearing system (21) is constituted by first and second seal rings (32) and (35). The first seal ring (32) is constituted by a lip seal (33) having a lip portion (33B) in sliding contact with a... | 08/31/2004 |
| 6746018 | Shaft seal A multiple shaft seal arrangement positioned between a shaft and an inside diameter surface of an aperture in a wall. The multiple shaft seal arrangement has a flinger attached to the shaft with a face seal mounted to the flinger. A double lip oil seal is mounted to... | 06/08/2004 |
| 6726210 | Sealing device for a gear box A sealing device for a gear box includes a box having a hole defined through a wall thereof and a shaft having a first end rotatably engaged with an inside of the box. A second end of the shaft is supported by a bearing which is received in a frame engaged with the ... | 04/27/2004 |
| 6726214 | Wrap-around severe splash seal A wrap-around interlocked labyrinth seal adapted to be mounted upon a rotating shaft, having a rotor and a stator. A flange positioned on the stator completely encircles the rotating shaft. The stator is interlocked by positioning a cover of the stator within a radi... | 04/27/2004 |
| 6676130 | Shaft sealing ring Provision is made in a shaft sealing ring, comprising a rotary support body, at least one sealing lip mounted on the support body and extending at least partly in radial direction, and a sealing surface offered by the sealing lip and contacting a stationa... | 01/13/2004 |
| 6257587 | Radial lip seal having protected porous dust excluder A shaft seal assembly includes an outer stationary carrier, an inner member, and a sealing system including a primary lubricant-retention seal that is fixed to the carrier in combination with a number of debris-excluding seal features. Such features inclu... | 07/10/2001 |
| 6109615 | Plenum oil seal An oil seal for a locking differential mechanism. The seal assembly includes a generally flat plate with a first generally circular oil seal adjacent an outer margin of the flat plate, a circular inner margin defining an opening in the flat plate with a s... | 08/29/2000 |
| 5951022 | Fluid seal device with reinforced dynamic lip An improved fluid seal device or pressure seal of the type suitable for uses such as sealing an annular space between an internal surface and a member having an outer cylindrical surface is described. The seal includes a reinforced body formed of fabric r... | 09/14/1999 |
| 5833372 | Auxiliary seal for a bearing and bearing incorporating such a seal An auxiliary seal for a bearing includes a seal housing supported by the bearing housing, and a seal ring interference fitting around a mechanical element such as a shaft or sleeve supported for rotation by the bearing. The housing and sleeve include a se... | 11/10/1998 |
| 5813830 | Carbon seal contaminant barrier system A carbon seal contaminant barrier system for a gas turbine engine including a lip seal for wiping the surface of a rotating seal runner, and a baffle spaced from the rotating seal runner to prevent the impingement of the contaminants on the lip seal. The ... | 09/29/1998 |
| 5687972 | Unitary oil seal assembly A unitary oil seal assembly intended for installation between relatively rotating inner and outer concentric members, such as, a shaft and housing of a motor vehicle is made up of a combination of a radial seal engageable with the shaft and a facial axial... | 11/18/1997 |
| 5653448 | Slinger seal Slinger seal assembly for sealing an annular space between two relatively rotatable members, i.e., an inner member, such as a rotatable shaft, and an outer member, such as a stationary housing. The slinger seal assembly shown and described includes a firs... | 08/05/1997 |
| 5605337 | Pivoting seal for oil-filled rotating machine A rotating machine has a splined primary shaft rotatably mounted in an opening of an oil-filled housing and a primary seal carried by the housing for sealingly engaging with a mating splined secondary shaft upon insertion of the secondary shaft into the h... | 02/25/1997 |
| 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 |
| 5269536 | Sealing device A sealing device in accordance with the present invention includes a projected portion having a rubber-like elastic member on the outer periphery of a seal member, and an outer cylindrical portion extending toward the seal member on a flange portion of a ... | 12/14/1993 |
| 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 |
| 5011301 | Auxiliary sealing system An auxiliary sealing system generally includes a flexible sealing ring, with an optional restraining element, such as a metal band, secured therearound for further fastening same to a given circular member. Such circular member may comprise an extension o... | 04/30/1991 |
| 4986552 | Excluder type seal with sliding friction reducing feature A sealing assembly is adapted to be disposed between a stationary part and a rotary shaft in the stationary part so as to provide a seal in the gap between the stationary part and the rotary shaft. The sealing assembly has a slinger capable of rotating as... | 01/22/1991 |
