Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7857320 | Bearing isolator seal with floating ring A bearing isolator seal is used to seal the space between the housing and the rotating shaft to prevent contaminants such as abrasive particles, moisture, and corrosive media from entering the bearing. The preferred embodiment consists of a stationary retainer ring ... | 12/28/2010 |
| 7188477 | High temperature dynamic seal for scramjet variable geometry A seal assembly for use in an engine, such as a scramjet engine, having a movable element, such as inlet cowl flap, is provided. The movable element has an outboard structural member which requires thermal protection. The seal assembly includes a sealing element and... | 03/13/2007 |
| 7086649 | Gasket with two concentric lips A gasket, sliding about the axis of rotation of a part to be brought closer to or to be spaced apart from another part with which it provides tightness through a pair of lips provided on a ring. The gasket includes a portion of the ring capable of bending to modify ... | 08/08/2006 |
| 7052410 | Adjustable putter A golf putter head adapted for attachment to a club shaft is provided with a face member having a strike face and a cylindrical back cavity, and a body member configured to fit and rotate within the back cavity. Selective rotation of the body member within the back ... | 05/30/2006 |
| 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 |
| 6789803 | Mechanical face seal A mechanical end face seal comprising two relatively rotatable seal rings, a resilient bellows for providing a secondary seal between one seal ring and either a housing or a rotating shaft and a finger spring element nested in the bellows. The resilient bellows comp... | 09/14/2004 |
| 6729622 | Ready-to-mount axial face seal The ready-to-mount axial face seal comprises a rotating unit of a shaft protection sleeve pushable over the pump shaft with a longitudinal section projecting out of the housing of the pump and fastenable to this shaft, with a spring-loaded axial face seal ring surro... | 05/04/2004 |
| 6688602 | Shaft sealing mechanism of compressor with mechanical seal The mechanical seal (3) includes: a rotary side sliding ring (32) which is supported by the large diameter side outer circumferential face (23) of the annular step section (21) of the rotary shaft (2) via the rotary side O-ring (37) and press-fitted into ... | 02/10/2004 |
| 6578849 | Sealing configuration, in particular for a rotary machine A sealing configuration is provided for sealing off a first region from a second region through which a fluid can flow and which can be kept at different pressures. The sealing configuration has a deformation region and a sealing surface connected thereto... | 06/17/2003 |
| 6568687 | Mechanical face seal A mechanical end face seal comprising two relatively rotatable seal rings, a resilient bellows for providing a secondary seal between one seal ring and either a housing or a rotating shaft and a finger spring element nested in the bellows. The resilient b... | 05/27/2003 |
| 6550776 | Intermediate metallic layer for flat packing and process for the production of a flat packing with such an intermediate layer A vacuum packing configuration and installation for use therewith, has a first part and a second part. The first part includes a hydraulically or pneumatically expandable, medium-tight volume adapted to be acted upon by an hydraulic or pneumatic medium, w... | 04/22/2003 |
| 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 |
| 6338489 | Mechanical seal A mechanical seal including a slide ring and a counter-ring that are axially preloaded against each other along sealing surfaces through the application of spring tension. These surfaces contact each other in a manner that permits the sealing surfaces to ... | 01/15/2002 |
| 6182973 | Intermediate metallic layer for flat packing and process for the production of a flat packing with such an intermediate layer A vacuum packing configuration and installation for use therewith, has a first part and a second part. The first part includes a hydraulically or pneumatically expandable, medium-tight volume adapted to be acted upon by an hydraulic or pneumatic medium, w... | 02/06/2001 |
| 5954341 | Bellows seal with drive collar for reverse pressure capability A seal for sealing a low pressure area from a high pressure area for containing a process fluid. The high pressure area is located along a rotatable shaft extending from a machine body. The seal includes an outboard seal positioned along the shaft and an ... | 09/21/1999 |
| 5924697 | Double gas seal with bellows supported by backing and support rings An improved gas seal having inboard and outboard seal units each defined by a pair of opposed and relatively rotatable seal faces, one face of each pair having appropriate grooves which communicate with a pressurized barrier gas, preferably an inert gas s... | 07/20/1999 |
| 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 |
| 5901965 | Bellows seal having balanced, de-coupled seal ring and seal ring shell A balanced, de-coupled seal assembly for use in a bellows seal having a mating rotating seal assembly, wherein the seal is used for sealing a process fluid along a rotatable shaft extending from a machine body. The seal assembly includes a seal ring, a se... | 05/11/1999 |
| 5873574 | Bellows seal with reverse pressure capability A seal for sealing a low pressure area from a high pressure area for containing a process fluid. The high pressure area is located along a rotatable shaft extending from a machine body. The seal includes an outboard seal positioned along the shaft, and an... | 02/23/1999 |
| 5642888 | Temperature and pressure resistant rotating seal construction for a pump A seal construction is provided for sealing a rotating pump shaft against passage of a fluid along its central axis. The seal construction includes front and rear sealing flanges mounted coaxially to and rotatable with the pump shaft. Stationary engaging ... | 07/01/1997 |
| 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 |
| 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 |
| 5261676 | Sealing arrangement with pressure responsive diaphragm means A seal construction is provided for sealing a rotating shaft against passage of a fluid along its central axis. The sealed construction includes a sealing flange fixedly mounted on the shaft and rotatable with the shaft. The sealing flange has a forward a... | 11/16/1993 |
| 5067824 | Air controlled rotary joint compensator The invention pertains to the method and apparatus of compensating for the axial bearing load forces imposed upon rotary joints conveying a pressurized fluid medium, such as steam, by imposing an axial force on the rotary joint housing proportional to the... | 11/26/1991 |
| 5009437 | Mechanical face seal including two diaphragms surrounding a gland plate A seal for providing a fluid tight seal between a pair of relatively rotatable components has a first seal face member mounted in fixed axial and rotational relationship and sealed with respect to one component and a second seal face member sealed with re... | 04/23/1991 |
| 5000462 | Sealing assembly for a ball mill pulverizer A seal assembly for a rotating drum in which a rotating member is secured relative to the drum for rotation therewith. An air chamber is provided adjacent the drum for introducing sealing air into the drum. At least one seal ring is secured to the rotatin... | 03/19/1991 |
| 4889350 | Bellows seal arrangement A bellows seal arrangement (50) seals a rotating shaft (30) passing through a housing wall (32). The seal uses two bellows (56, 58) of different effective diameters (B, C) that are connected in series by a coupling member (60). The series-connected bellow... | 12/26/1989 |
| 4865333 | Seal protection apparatus The seal protection apparatus is intended to provide protection for a main mechanical seal. It comprises a first seal ring fast on the shaft of a pump and a second seal ring which is connected to the casing of the pump by means of a flexible, annular diap... | 09/12/1989 |
| 4688806 | Slide ring sealing assembly with bellows and fluid pressure control of sealing pressure A slide ring seal for sealing the gap between a rotatable shaft (1) and a fixed wall (2) to separate a space (3) for a pressure fluid from the external space (4). The slide ring seal comprises at least one seal ring (5) mounted on a fixed wall or a shaft ... | 08/25/1987 |
| 4394021 | Contact sealing A contact sealing for adaptive abutment to a rotating sealing surface is provided with an annular groove, in which a pressurized hose is located which abuts a sealing member and presses the same against the sealing surface.... | 07/19/1983 |
| 4378119 | Mechanical face seals with special bellows A mechanical face seal adapted to withstand a pressure differential across its sealing faces, includes a bellows unit of monolithic construction, comprising a plurality of corrugations, the crowns of the convolutions directed towards the high pressure sid... | 03/29/1983 |
| 4348030 | Toggle-action face seal for relatively rotatable members A face seal, such as for a water pump in the cooling system of an internal combustion engine, comprises a rigid sealing ring carried by the free end of a moulded elastomeric sleeve on a mounting cup, the sleeve having at about its mid-length a circumferen... | 09/07/1982 |
| 4329127 | Sealed bearing means for in hole motors An in hole fluid motor for driving a drill bit utilizing the circulation of drilling fluid to drive the motor, having a sealed bearing assembly. The bearing assembly has a hollow, rotary drive shaft disposed within a tubular relatively stationary housing ... | 05/11/1982 |
| 4196912 | Fluid-pressurized face seal A fluid-pressurized face seal device is provided for use in sealing a rotatable shaft in heavy duty equipment. At least an end portion of the shaft is surrounded by a housing to which said seal device is attached. The seal comprises a cylindrical annular ... | 04/08/1980 |
| 4193756 | Seal assembly and method for providing a seal in a rotary kiln A seal assembly and method for providing a contaminant-free, fluid-tight seal in a rotary kiln or similar rotating apparatus. A seal is provided between the rotating surfaces and the stationary surfaces of the kiln by providing an annular seal chamber def... | 03/18/1980 |
| 4189158 | Gas loaded face seal A seal (44,144) between two relative movable structures (14,30) is provided. The seal has a hollow chamber (50) which is gas filled either permanently or when desired. The seal (44,144) has a driving portion (46,146) which may be of the same or of differe... | 02/19/1980 |
| 4154449 | Seal device for rotary heat-exchanger A seal device for a rotary heat-exchanger of a gas turbine is held in bearing contact with each end face of a regenerative rotor of the heat-exchanger to partition a low-pressure exhaust gas passage and a high-pressure air passage from one another and to ... | 05/15/1979 |
| 4104169 | Filtering apparatus with rotatable filter elements and seal A filter has a housing defining a closed chamber around a hollow shaft which is rotatable in the housing and which carries a plurality of filter elements so that fluid can be pumped through the filter elements into the hollow interior of the shaft. The sh... | 08/01/1978 |
| 4067583 | Sealing device with closure system for compressor The device comprises a driving mechanism, disconnectable coupling means, a otor in which is conveyed a toxic gas, and an annular seal clamped between stationary knife-edges on the rotor and movable knife-edges associated with a movable annular support unit... | 01/10/1978 |
| 3979104 | Shaft sealing device for a butterfly valve A shaft seal device for a butterfly valve shaft wherein a friction face seal device having a flexible double bellows arrangement thereon is disposed within a seal chamber between a contaminated source of pressurized steam and a low pressure gland condense... | 09/07/1976 |
