Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
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| Number | Title | Issue Date |
| 7407372 | Progressing cavity pump or motor A progressing cavity pump or a motor includes, in one embodiment, an outer tube 12, an inner tube 14, and a plurality of apertures 16. A pair of annular seal glands 18 seal the stator material to the outer tube. The stator material is inj... | 08/05/2008 |
| 7380768 | Balanced-plug cage style control valve and bonnet seal assembly A balance-plug cage style control valve has substantially reduced body-bonnet bolt loading with an elastic seal. The elastic seal assembly includes an annular seal having an elastic region, a compression surface, and at least one sealing surface positioned in a chan... | 06/03/2008 |
| 7341258 | Cammed seal assembly with sealing ring having an angled leg portion and foot portion with elastomeric energizer element A seal assembly seals first and second operational surfaces spaced apart by a gap. The first surface includes a seal groove having a base surface and first and second side surfaces. A sealing element in the seal groove has a foot portion extending parallel to the ba... | 03/11/2008 |
| 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 |
| 7303194 | Seal retainer with pressure energized metal seal members for undersea hydraulic coupling An improved seal retainer for an undersea hydraulic coupling member, which utilizes pressure energized metal seals to maintain fluid integrity. One or more metal seals designed to have a press or interference fit are utilized in such a way that pressurized fluid try... | 12/04/2007 |
| 7284758 | Textured seal for reduced wear The present invention relates to seals having textured features. The present invention particularly relates to seals having contact surfaces with said features wherein the contact surface seals properly and is resistant to wear. The contact surface is able to perfor... | 10/23/2007 |
| 7231766 | High pressure intensifying piston valve The present invention includes a piston valve for charging and discharging a first fluid chamber. The piston valve includes a piston shaft and a ring comprising a seal element. The piston shaft has a first end and a second end with the first end including a counter ... | 06/19/2007 |
| 7229102 | Fluid coolant union A coolant union includes a seal assembly having a first seal member and a non-rotating second seal member. At least one of the annular sealing surfaces presented by the rotating seal member and the non-rotating seal member is chamfered such that the chamfered sealin... | 06/12/2007 |
| 7216872 | Seal for use with pipe and flange assemblies The invention relates to a seal for use with a pipe and flange assembly. The seal is intended to prevent leakage during axial movement of the pipe relative to a flange. The invention comprises a central cylindrical elastomeric member located between two circular ela... | 05/15/2007 |
| 7195246 | Sealing material A sealing material for sealing liquid composed of a seal main body of resin, having a U-shaped cross section and a concave groove opening to an axis direction, and an O-ring of rubber fit to the concave groove of the seal main body used for medical appliances and pa... | 03/27/2007 |
| 7178806 | Cinchpac self-loading rotary shaft seal A seal for a conveyor drive which has an elastomer which is compressed between a cap ring and a housing. ... | 02/20/2007 |
| 7163206 | Fluid seal A jet pipe assembly containing at least one joint provided with a seal assembly to isolate, substantially, the fluid flowing in the pipe from the fluid external to the pipe. The dynamic member of the seal assembly is provided with both radial and cylindrical sealing... | 01/16/2007 |
| 7131648 | Seal construction including a compressible spring mechanism for bearing preload A seal assembly adapted for use in creating a seal between an axially extending shaft and a support member. The seal assembly defines an axial passage through which the shaft extends, wherein a bearing assembly is mounted to the support member and includes a station... | 11/07/2006 |
| 7128323 | Seal device Primary objective of the present invention is to provide a seal device wherein the seal surfaces of the device are always brought into close contact against the side walls of the mounting slot regardless of fluid conditions. The seal device has two seal portions loc... | 10/31/2006 |
| 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 |
| 7093820 | Over center high deflection pressure energizing low leakage seal A low leakage seal for separating two environments and contacting a component surface is provided. The seal includes a base and an annular rib. The annular rib is coupled to and extends from the base. The annular rib includes at least one contact surface configured ... | 08/22/2006 |
| 7086650 | Gland packing The present invention provides a gland packing in which impairment of the sealing performance due to cracks that unwillingly occur in an end portion in the width direction of an expanded graphite tape of a braiding yarn in the gland packing can be suppressed. In gla... | 08/08/2006 |
| 7083160 | Balanced-plug cage style control valve and bonnet seal assembly A balance-plug cage style control valve has substantially reduced body-bonnet bolt loading with an elastic seal. The elastic seal assembly includes an annular seal having an elastic region, a compression surface, and at least one sealing surface positioned in a chan... | 08/01/2006 |
| 7070017 | Rotating apparatus for construction machine A swing mechanism for a construction machine having a grease bath seal. A grease bath can be disposed on a vehicular base carrier of the machine, and can be coupled with a swing frame. The grease bath seal can then act to prevent intrusion of pollutants or other for... | 07/04/2006 |
| 7052020 | Hydrodynamic rotary seal A hydrodynamically lubricating rotary seal for partitioning a lubricant from an environment has a generally circular seal body, a sloping dynamic sealing lip, and an energizer. The dynamic sealing lip is provided for establishing compressed sealing relation with a r... | 05/30/2006 |
| 7021632 | Self-energized gasket and manufacturing method therefor A secondary seal gasket is formed of a graphite material for higher temperature applications. The gasket is formed by multiple wraps of a graphite ribbon and then is shaped in a mold to provide a U-shaped cross-sectional configuration having a self-energizing spring... | 04/04/2006 |
| 7021633 | Low friction fluid seal device with additive to rubber compound A fluid seal device for use in sealing an annular space between an internal surface of a cylinder and a member therein having an outer cylindrical surface and being formed at least in part from rubber. An oleamide additive is included in the rubber compound comprisi... | 04/04/2006 |
| 7004474 | Seal for an endless track A seal for an endless track has a cross section having a centerline parallel to an axis of the seal and a configuration symmetric with respect to the centerline of the cross section. The seal can include an elastically deformably configured portion having a cross se... | 02/28/2006 |
| 6968615 | High temperature metallic seal A metallic seal includes a cold formed substrate layer and one or more additional layers. At least one of the layers offers improved resistance to high temperature stress relaxation. ... | 11/29/2005 |
| 6932321 | Balanced-plug cage style control valve and bonnet seal assembly A balance-plug cage style control valve has substantially reduced body-bonnet bolt loading with an elastic seal. The elastic seal assembly includes an annular seal having an elastic region, a compression surface, and at least one sealing surface positioned in a chan... | 08/23/2005 |
| 6910692 | Composite elastomeric seal for sealing fluid lines A composite elastomeric seal for sealing fluid line members is provided. The composite seal comprises an outer U-shaped seal body and an inner elastomeric portion. The U-shaped seal body comprises inner and outer extending arms, each arm having a shaped contour and ... | 06/28/2005 |
| 6869079 | Stackable metallic seal and method of using same A seal for sealing between a first component and a second component includes a first metallic element comprising a plurality of sealing profiles and defining a groove therein and a second metallic element comprising a plurality of sealing profiles and a protrusion m... | 03/22/2005 |
| 6626438 | Seal assembly for telescopic hydraulic cylinder A multi-tube hydraulic cylinder includes annular seal assemblies joining adjacent tubes. Each assembly includes an annular primary seal member and an annular base seal member. The primary seal member is formed from relatively soft elastomer and includes i... | 09/30/2003 |
| 6572117 | Gland packing The present invention provides a gland packing in which a phenomenon where reinforcing fibers protruding from ends of adjacent braiding yarns overlap with each other, and the over-lapping reinforcing fibers are interposed over the whole range between expa... | 06/03/2003 |
| 6568689 | Gland packing The present invention provides a gland packing in which impairment of the sealing performance due to cracks that unwillingly occur in an end portion in the width direction of an expanded graphite tape of a braiding yarn in the gland packing can be suppres... | 05/27/2003 |
| 6561517 | Packing device for rotary valves A packing device, for sealing a longitudinal shaft against leakage of a pressurized fluid, having an elongate valve housing with an annular internal chamber about a coaxial rotatable shaft. The chamber has an inner end with an annular stationary packing s... | 05/13/2003 |
| 6553639 | Method of manufacturing seals A method of manufacturing a leaf seal for use between rotating components comprises forming corrugations within a metallic strip and feeding the corrugated strip into a seal guide. The corrugated strip is then pressed into the guide by an angled ram such ... | 04/29/2003 |
| 6488263 | Valve stem and method of manufacture; improved stem packing A valve stem has a thickness of hardfaced material on its outer diameter in the area contacting the stem packing where the seal is formed which prevents corrosion, erosion and/or scratching of the valve stem, thereby preventing formation of leak paths. A ... | 12/03/2002 |
| 6318730 | Tufting machine push rod housing gland seal assembly An improved tufting machine push rod housing gland seal assembly for use with a tufting machine is disclosed. The gland seal assembly of the invention includes an elongate carrier formed by a longitudinal axis, having a first end and a spaced second end, ... | 11/20/2001 |
| 6318729 | Seal assembly with thermal expansion restricter A seal assembly having a first seal with a first mating surface and a recess in the first mating surface, and a second seal having a second mating surface and a recess in the second mating surface. The first mating surface of the first seal is adjacent to... | 11/20/2001 |
| 6302402 | Compliant high temperature seals for dissimilar materials A high temperature, gas-tight seal is formed by utilizing one or more compliant metallic toroidal ring sealing elements, where the applied pressure serves to activate the seal, thus improving the quality of the seal. The compliant nature of the sealing el... | 10/16/2001 |
| 6267383 | V-shaped seal with anti-extrusion section A sealing-device having a body section and an anti-extrusion section is shown, the body section being disposed on top of the anti-extrusion section. The body section includes sealing surfaces for enclosures in which the sealing device is located. the anti... | 07/31/2001 |
| 6250604 | Valve stem and method of manufacturing, improved stem packing A valve stem has a thickness of hardfaced material on its outer diameter in the area contacting the stem packing where the seal is formed which prevents corrosion, erosion and/or scratching of the valve stem, thereby preventing formation of leak paths. A ... | 06/26/2001 |
| 6247679 | Valve stem and method of manufacture; improved stem packing A valve stem has a thickness of hardfaced material on its outer diameter in the area contacting the stem packing where the seal is formed which prevents corrosion, erosion and/or scratching of the valve stem, thereby preventing formation of leak paths. A ... | 06/19/2001 |
| 6168161 | Rotary valve shaft seal A shaft seal having spacers positioned between the packing follower and the body of a valve. The spacers are flat, hard members of a certain thickness which allow maximum tightening of the packing fasteners and determine the maximum pressure the packing f... | 01/02/2001 |
