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| Number | Title | Issue Date |
| 8317201 | Device for a rotating gland seal The present invention relates to a machine arranged to operate in explosive environments, comprising a rotatable shaft (16) extending through a stationary part (10) of said machine, a gland (20) which is mounted in said stationary part (10 | 11/27/2012 |
| 8074999 | Dynamic sealing arrangement for movable shaft A dynamic sealing arrangement for preventing leakage of a fluid along a shaft includes multiple seals and pressurized barrier sealant is presented. According to one aspect, at least three seals are arranged along the shaft with pressurized barrier sealant between th... | 12/13/2011 |
| 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 |
| 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 |
| 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 |
| 7175176 | Device for feeding suction air or blowing air in a sheet-processing machine A device for feeding suction air or blowing air to a sheet-retaining device displaceable relative to a machine element in a sheet-processing machine, includes a first air-feeding element connectible in terms of flow to a suction-air or blowing-air source. A second a... | 02/13/2007 |
| 7121554 | High-pressure sealing In a high-pressure cylinder with an axial plunger, a seal assembly for scaling the gap between the cylinder wall and the plunger. The assembly is disposed in an annual recess in the wall having an open end and a bottom opposite thereto, and comprises a plunger-seali... | 10/17/2006 |
| 7118114 | Dynamic sealing arrangement for movable shaft A dynamic sealing arrangement for preventing leakage of a fluid along a shaft includes multiple seals and pressurized barrier sealant. According to one aspect, at least three seals are arranged along the shaft with pressurized barrier sealant between the first and s... | 10/10/2006 |
| 7114726 | Pressurized chamber seal cartridge A seal cartridge for a centrifugal pump includes a housing that fits within a conventional stuffing box of the pump and has a cylindrical internal surface receiving the shaft. A pair of annular grooves are provided internally of the housing adjacent respectively opp... | 10/03/2006 |
| 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 |
| 7055390 | Seal assembly with means for detecting seal failure A seal assembly includes a first body and a second body. A primary seal is disposed between the first body and the second body. A secondary seal is disposed between the first body and the second body in spaced relation to the primary seal. A pressure port extends th... | 06/06/2006 |
| 7055593 | Well stuffing box packing Disclosed herein are apparatus and methods for sealing a well stuffing box. ... | 06/06/2006 |
| 6948287 | Gap seal on a building structure The invention concerns a permanently functional gap seal on structures, in particular building structures, which ensures a reliable seal against penetrating moisture, this being achieved in that the cover layer has a profile which can be adapted to an installation s... | 09/27/2005 |
| 6932351 | Packing case for cooling compressors and other machinery A packing case for cooling compressors and other machinery is disclosed. A packing case includes an opening through which a movable machinery shaft may be inserted such that the packing case is mounted on the shaft. In an exemplary embodiment, the packing case conta... | 08/23/2005 |
| 6921081 | Annular seal According to the invention a seal—arranged between a radially inwardly facing outer boundary surface of an annular sealing gap and a radially outwardly facing inner boundary surface of the sealing gap—is characterized by a sealing ring having a sealing surface w... | 07/26/2005 |
| 6918595 | Seal for high-pressure pumping system A high-pressure pumping system including an energizing seal component having an aperture extending therethrough and a seal jacket component having a base and a toroidally-shaped flared membrane extending from the base. The body and the flared membrane are monolithic... | 07/19/2005 |
| 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 |
| 6834862 | Shaft sealing system for a rotary mechanical device A sealing system to be inserted into the seal cavity of a rotary mechanical device to provide a seal and a bearing surface to eliminate whip in a rotating shaft. The sealing system includes a split bushing element to allow easy installation over the shaft. The bushi... | 12/28/2004 |
| 6817228 | Method and apparatus for detecting seal failure Pumps and valves with movable parts, such as a plunger, typically have seals around the part. The seals may isolate one chamber from another to prevent leakage across the seals. The pressure in one chamber may be different from the pressure in another adjacent chamb... | 11/16/2004 |
| 6769695 | Back-up rings for high pressure seals, packing assembly, and pumps incorporating same An improved support for a seal is provided in the form of a back-up ring that reduces or eliminates the gaps between a pump plunger and a high pressure cylinder of a pump. The support includes a back-up ring having opposed first and second faces with a wall thicknes... | 08/03/2004 |
| 6682386 | Propeller shaft assembly for toy watercraft A toy watercraft including: a housing defining an interior section of the watercraft; a motor mounted in the housing; a propeller shaft operatively connected to the motor and extending through an opening in the housing; a propeller mounted on an end porti... | 01/27/2004 |
| 6673201 | Top separator with intraseal for digester vessel in a pulp or fiber processing system A top separator assembly for a digester is disclosed comprising: a rotatable shaft for the top separator; a packing for the shaft; and a sealing ring operatively mounted to the shaft and having a nominal clearance with the pack box, said sealing ring moun... | 01/06/2004 |
| 6637749 | Seal for clean-in-place enclosure for a packaging machine A seal for the selective sealing of a rod which is reciprocatable within an opening through the wall of an enclosure such as the filling station of a packaging machine, the seal being actuatable to selectively provide a fluid-tight seal between the rod an... | 10/28/2003 |
| 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 |
| 6595524 | Pressure regulating buffer seal A buffer seal adapted for use in a seal assembly including at least a primary seal, the seal assembly being adapted to provide a fluid seal between two relatively moving machine elements, such as a piston or rod of a first machine element moving within a ... | 07/22/2003 |
| 6589391 | Top separator with intraseal for digester vessel in a pulp or fiber processing system A top separator assembly for a digester is disclosed comprising: a rotatable shaft for the top separator; a packing for the shaft; and a sealing ring operatively mounted to the shaft and having a nominal clearance with the pack box, said sealing ring moun... | 07/08/2003 |
| 6578850 | Dynamic seal for a drive shaft A dynamic seal for a drive shaft including a seal housing with at least one inlet for injecting a fluid, (i.e., a liquid or gas) into the seal. The seal also has an expeller device, such as an expeller ring mounted on the drive shaft, for expelling the in... | 06/17/2003 |
| 6502827 | Sealing device and a method of repairing/replacing sealing devices A sealing device (20, 80, 90), optionally in the form of a kit is provided for sealing about a rotatable member such as a shaft (22). The sealing device or the kit includes a follower housing (32) for mounting about the rotatable member (32) with an axial... | 01/07/2003 |
| 6478303 | Sealing ring packing A sealing ring packing (1) includes a cooled packing casing (4) that can be placed inside a stuffing box borehole (3), and holds at least one essentially annular slide ring (5) pressed against the moved component (2) to be sealed, whose outside periphery ... | 11/12/2002 |
| 6367809 | Seal cage The present invention provides an improved seal cage which is useful, for example, for injectable sealing compound systems. In preferred embodiments the dimensions of the seal cage can be adjusted for use of the seal cage with shafts of different diameter... | 04/09/2002 |
| 6290235 | Sealing system for a reciprocating shaft Fluid sealing system for installation within an assembly including a stationary machine part having a generally annular surface, and a reciprocable machine part having a generally cylindrical surface disposed concentrically with the annular surface of the... | 09/18/2001 |
| 6126171 | Sealing cartridge An improved sealing cartridge for use in a reciprocating plunger pump which includes a low pressure seal, a vacuum seal, and an oil seal within a unitized cartridge assembly to facilitate servicing and/or replacing the various seals with minimal effort an... | 10/03/2000 |
| 6126170 | Seal cage The present invention provides an improved seal cage which is useful, for example, for injectable sealing compound systems. In preferred embodiments the dimensions of the seal cage can be adjusted for use of the seal cage with shafts of different diameter... | 10/03/2000 |
| 6116573 | Packing system for valves A packing system for valves includes a preformed packing, an upper packing cup, a lower packing cup, and a threaded bushing or a gland yoke capable of capturing the upper packing cup when the system is installed in a stuffing box. The preformed packing in... | 09/12/2000 |
| 6105596 | Sealing system A sealing assembly with a first molded graphite ring of generally triangular cross section, one side of which is in use perpendicular to the longitudinal axis of a rotatable and/or slidable shaft, the surface of which is to be sealed in an axial direction... | 08/22/2000 |
| 6098986 | Seal A seal (14) for use between a pair of substantially concentric elements (10 and 11) capable of relative movement with respect to each other, said seal comprising a sealing element (17) having a configuration of a helix wherein the opposed axial faces of t... | 08/08/2000 |
| 6007070 | Pressure actuated packing assembly A pressure actuated packing assembly for use in sealing the annular area of fluid flow devices to provide and maintain an effective, long-term seal therein. The pressure actuated packing assembly is designed for use in chemically hostile environments, and... | 12/28/1999 |
| 5904354 | Mechanically energized element The inventive sealing assembly designed to be set by longitudinal compression is mechanically energized, and comprises an elastomeric sealing element and a flexible member in intimate contact with the sealing element, a flexible portion of the flexible me... | 05/18/1999 |
| 5769428 | Device for sealing a hood that protects a tumbling barrel A device for oil-impermeably sealing a stationary hood (6) off from a rotating, tumbling barrel, containing at least one stationary packing cord (7) which is forced against a race (8) by a pre-stressed and compressed gasket (9). The race is part of the ba... | 06/23/1998 |
