Did You Know...
...that the video game, Pong, was invented by a guy who graduated at the bottom of his engineering class? Nolan Bushnell spent more time running the games at a local amusement park than he did on his studies at the University of Utah. His dreams of working for Disney's amusement empire were dashed when the company wouldn't hire him. Taking a boring job, Nolan daydreamed about electronic versions of popular games. He invented Pong, the first video game, and went on to found Atari Co.
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| Number | Title | Issue Date |
| 7311307 | Seal seat assembly with specialized features A seal seat assembly utilizes a positive mechanical drive between a seal seat and the bore of a pump component, which in turn is mounted to and driven by the shaft by means of a positive mechanical engagement therebetween. The grommet accommodates the positive mecha... | 12/25/2007 |
| 7296982 | Air supply device An air supply device includes a plurality of bearings for rotatably supporting a shaft, a plurality of bearings for rotatably supporting an orbital scroll, and a plurality of bearings for rotatably supporting each of a plurality of rotation constraint members that p... | 11/20/2007 |
| 7070186 | Flanged boot having a rolling bearing interface A flanged boot having a rolling bearing interface suitable for connection to two mechanical components which are movable with respect to each other, in terms of both rotational and axial movements. The flanged boot has a first annular flange at one end and a second ... | 07/04/2006 |
| 6962340 | Mechanical seal device A primary technical goal of the present invention is to improve the durability and the seal performance of a cup gasket for a mechanical seal device which retains a seal ring. The mechanical seal device disposes a cup gasket made of a resilient rubber material betwe... | 11/08/2005 |
| 6939051 | Bearing arrangement for a shaft A bearing arrangement supporting a sealing bellows around a shaft to permit axial and angular motion includes inner and outer bearing sleeves, and a rolling bearing having an inner race ring fitted around the inner sleeve with one end face engaging a shoulder in the... | 09/06/2005 |
| 6918593 | Mechanical seal device A primary technical goal of the present invention is to provide a mechanical seal device in which a manufacturing cost of the parts is decreased, a satisfactory seal performance is exhibited even under severe operating conditions, and the device can be easily mounte... | 07/19/2005 |
| 6583376 | Sealing apparatus used in a wire cut electric discharge machine A wire cut electric discharge machine that includes a machining tank storing a machining fluid, an upper arm disposed at an upper portion of the machining tank, a lower arm inserted into the machining tank, a wire electrode extending between the upper arm... | 06/24/2003 |
| 6341781 | Sealing element for a face seal assembly A sealing element for a face seal assembly including a bellows portion having mounting portions at its axial ends. One of the mounting portions is designed for non-rotational mounting on a component, e.g. a shaft, and the other for retaining an annular fa... | 01/29/2002 |
| 6254102 | Seal device having a flexible finger seal member A seal device for creating a seal between a rotatable shaft and a stationary member. The seal device includes a seal member having a generally annular body including a generally cylindrical inner wall forming a bore that extends through the body and a sea... | 07/03/2001 |
| 6220601 | Mechanical face seal device A mechanical face seal device includes a bellows assembly comprising a bellows member of resilient material having axially spaced mounting portions interconnected by an intermediate foldable portion, one of said mounting portions being adapted to be fixed... | 04/24/2001 |
| 5904355 | Rotary seal A rotor for collecting and centrifuging biological fluids in a range of volumes. The rotor includes an elastic impermeable diaphragm which defines at least a portion of a variable-volume processing chamber, where the fluid is centrifuged. The rotor includ... | 05/18/1999 |
| 5725219 | Mechanical face seal with elastomeric bellows unit and intermeshing drive bands Mechanical face seal has a first sealing mounted in fixed axial and rotational relationship and sealed with respect to a housing and a second sealing ring mounted in fixed rotational relationship but movable axially with respect to a shaft. The second sea... | 03/10/1998 |
| 5676382 | Mechanical face seal assembly including a gasket An improved seal assembly utilizing a cup gasket having a flange portion secured or sandwiched between side surface of a mating ring and an inner surface of a radially extending side portion of an inner sleeve such that a static seal occurs in an axial di... | 10/14/1997 |
| 5544897 | Cartridge seal having a high contact pressure seal and means for intersleeve adjustment including quench fluid delivery An improved mechanical seal of the cartridge-type providing an inboard compressed packing seal between dual shaft sleeves and the pump shaft, compressed between the shaft sleeves by action of a plurality of radially arranged set screws. A sharp edge loade... | 08/13/1996 |
| 5375854 | Mechanical face seals A metal bellows for use in a mechanical seal is rolled from a flat sheet and seam welded along an axial diagonal line. The bellows includes corrugations or convolutions having inner and outer crowns of identical radii. The end corrugation or convolution a... | 12/27/1994 |
| 5375852 | Rotating seal body for face type seal A rotating seal body for a face type seal having a rotor portion secured on and rotatable with a shaft and a stator portion for securement in a housing and sealing faces on each of the portions in rubbing abutment, wherein the seal has thermally conductiv... | 12/27/1994 |
| 5344164 | Mechanical seals The invention provides a cartridge-mounted mechanical seal in which a set of bellows acts against the rotary component to urge its face into mating contact with the stationary component face, and wherein the stationary component is mounted in the seal so ... | 09/06/1994 |
| 5332235 | Mechanical face seals A mechanical face seal has a first seal face member mounted in fixed rotational and axial relationship and sealed with respect to a housing, and a second seal face member mounted with respect to a shaft by means of an elastomeric bellows unit, the bellows... | 07/26/1994 |
| 5324048 | Mechanical seals The invention provides a sleeve for a cartridge-mounted mechanical seal, the sleeve being formed from two connected-together metallic components. The first component is made from a material having a relatively high chemical resistance, the second from a m... | 06/28/1994 |
| 5094466 | Water pump seal with improved seal force distribution A vehicle water pump seal has a specially designed gasket interposed between the retainer flange that the spring bears on and the sealing ring that transmits the spring force evenly in spite of bowing in the retainer flange.... | 03/10/1992 |
| 5013051 | Single component seal A seal component which establishes a seal between a rotating shaft and a housing includes an annular face and an axially extending tubular elastomeric bellows. The geometric configuration of the bellows allows it to buckle, exert a substantially uniform a... | 05/07/1991 |
| 5011166 | Mechanical face seals A mechanical face seal includes a seal face member which is secured in fixed rotational relationship and sealed with respect to one component by means of a resilient bellows unit, said bellows unit being attached at one end to the associated component and... | 04/30/1991 |
| 4968044 | Rotary facial seal and bearing assembly A rotary facial seal and a thrust bearing are adapted to be installed between inner and outer concentric relatively movable members, such as, the spindle housing and axle of a motor vehicle, the facial seal having an annular diaphragm made up of an inner ... | 11/06/1990 |
| 4917389 | Water pump face seal assembly A water pump face seal assembly uses a wave spring stamped from flat stock with drive tabs which, besides providing contact force and wear take up, also serves to maintain a square, concentric contact interface and to transfer torque with almost no lost m... | 04/17/1990 |
| 4890851 | Bellows seal with vibration damper A bellows-type mechanical seal construction having a rotating carbide face ring provided with a vibration damper mounted thereon. The vibration damper comprises a carbon ring which is fixedly mounted within the carbide face ring, as by a press fit. The ca... | 01/02/1990 |
| 4841183 | Dynamoelectric machine construction and method A dynamoelectric machine or electric motor construction is disclosed in which the motor has a cylindrical shell having a stator core press-fitted therein and positioned axially with respect to the shell at a predetermined position. The stator core has a c... | 06/20/1989 |
| 4840384 | Face-type shaft seal with shroud The face seal of a centrifugal pump has a stationary seal component mounted on the pump casing and a rotary seal component rotatable with the drive shaft extending into the casing and connected to the inner rotary pumping member or impeller. The rotary se... | 06/20/1989 |
| 4838560 | Slide ring seal A slide ring seal for sealing a gap between a rotatable and non-rotatable machine part. The seal comprises at least one static seal ring to be attached to the non-rotatable machine part and provided with a slide ring and at least one counter ring to be fa... | 06/13/1989 |
| 4807891 | Electromagnetic pulse rotary seal An rotary seal for protection against electromagnetic interference and electromagnetic pulses is disclosed. An electrically conductive resilient bellows surrounds a shaft extending through an opening in an enclosure. The bellows is attached at one end to ... | 02/28/1989 |
| 4749200 | Mechanical seal with welded bellows A rotary mechanical seal with metal bellows having reinforced weld joints. The bellows is formed of a plurality of adjacent annular discs or diaphragms having inner and outer circumferences welded together. A plurality of annular reinforcing rings are pro... | 06/07/1988 |
| 4744569 | Bellows mechanical seal with inactive diaphragms A bellows type mechanical seal assembly in which the bellows is provided with inactive or non-functional diaphragms to increase the pressure capacity of the seal assembly.... | 05/17/1988 |
| 4722415 | Saddle riding type vehicle for running on rough lands In a saddle riding type vehicle suitable for running on rough lands, a pair of left and right frontwheels supported frontwardly of a body frame through a swing arm and a front axle housing have relatively wide wheel rims, within which rims knuckles and jo... | 02/02/1988 |
| 4680879 | Underwater dredging apparatus and cutter head therefor A boom pivotally mounted for rotation about a vertical axis on a support vehicle which may be a floating barge or heavy truck. The boom is extensible and retractable in the radial direction and mounts, at a distal end, a cable supporting a dredging appara... | 07/21/1987 |
| 4669739 | Rotary mechanical fluid face seal with rigid restraint ring means A seal assembly for sealing a rotatable shaft to a housing includes a flexible bellows member and a removeable insert which are sealed against each other along complementary tapered sealing surfaces. A rigid restraint is located in the flexible bellows me... | 06/02/1987 |
| 4613005 | Unitized seal for severe service applications The present invention is directed to a grit exclusion and oil retention seal for use in extremely hostile environments. These environments include, but are not limited to sealing oil within cavities forming parts of earth drilling bits and the like. Seals... | 09/23/1986 |
| 4591167 | Slide ring seal with pre-contoured bellows A slide ring seal for sealing a machine component relative to a pressurized media. A slide ring is provided which is axially slidably mountable on the machine component. A bellows is arranged for surrounding an axial portion of the machine component. The ... | 05/27/1986 |
| 4573691 | Mechanical face seals In a mechanical face seal for producing a fluid tight seal between a pair of relatively rotatable components a first sealing element is associated with one of said components and is fixed axially with respect thereto; a second sealing element is associate... | 03/04/1986 |
| 4521025 | Seal device The invention concerns a seal device comprising a rotating and a non rotating seal ring, a so-called mechanical seal. The rotating (2) and non rotating (3) rings are pressed towards each other by an elastic socket (4) surrounding the shaft (1).... | 06/04/1985 |
| 4502698 | Rotary face seal with flexible annular boot A rotary seal interposed between an axially and rotatably movable shaft and stationary housing, the seal having a flexible annular boot or diaphragm mounted in surrounding relation to the shaft and terminating in an outer peripheral margin which abuts a s... | 03/05/1985 |
| 4477088 | Face seal means with back-up seal In a twin spool gas turbine engine, a bellows serves to bias a carbon seal against its seal plate and a piston ring back-up seal spaced radially outward and axially from the carbon seal provides a controlled leak path in the event the bellows fails.... | 10/16/1984 |
