Class 277/904 - VISCOUS SEAL

Subclass of Class 277 - Seal for a joint or juncture
Definition: Sealing means wherein the sealing means is a material having
No. of patents: 40
Last issue date: 12/24/2002

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Number	Title	Issue Date
6497414	Seal for a closure and a closure incorporating the seal Articles and methods are provided for sealing a closure having an opening through which more than one elongate article may project. A body is provided having a plurality of axially extending radially projecting ribs defining, between circumferentially adj...	12/24/2002
6454267	Corrosion resistant gasket for aircraft A corrosion resistant gasket for aircraft, and more particularly to encapsulation of a conductive mesh in a pliable fluorosilicone compound that will not become bonded to mating surfaces and will also migrate upon compression during installation to the th...	09/24/2002
6454276	Corrosion resistant gasket for aircraft A corrosion resistant gasket for aircraft, and more particularly to encapsulation of a conductive mesh in a pliable fluorosilicone compound that will not become bonded to mating surfaces and will also migrate upon compression during installation to the th...	09/24/2002
6439580	Sealing element for pipelines The invention relates to a sealing element (1) with inflatable bellows (10) for sealing piping. Said sealing element can be e.g. cylindrical in shape and said bellows (10) can be provided with two recesses (14a, 14b) containing a gel (11). When the bellow...	08/27/2002
6357764	Corrosion resistant gasket for aircraft A corrosion resistant gasket for aircraft, and more particularly to encapsulation of a conductive mesh in a pliable fluorosilicone compound that will not become bonded to mating surfaces and will also migrate upon compression during installation to the th...	03/19/2002
6273644	High pressure live service pipe renewal apparatus and method An apparatus and method for inserting a new service pipe into an existing high pressure service pipe that contains a leak, without the necessity of excavation or separately shutting off the supply of the high pressure gas upstream of the effected pipe sec...	08/14/2001
6231055	Sealed article An article includes an object and a sealing member. The object includes a cavity formed therein. The sealing member includes sealant and a carrier to which the sealant is attached. At least one of the carrier and the object includes attachment means where...	05/15/2001
5667309	Bearing seal system A bearing seal system having a bag structure in a first embodiment wherein (1) oil is filled in a tapering bag space section positioned from the bag section to an exit section; (2) the space in the tapering space section is kept to 0.8 mm or less the slop...	09/16/1997
5666012	Rotating shaft seal A means of sealing a rotating shaft against high fluid pressure with low friction torques, low leakage and low wear. This accomplished by use of sealing assembly comprising a sliding and a floating seal assembly separated by a lubricant filled chamber. Th...	09/09/1997
5607165	Sealing system for a valve having biassed sealant under pressure The sealing system seals a moving element in a valve. The sealing system includes an internal seal between the valve body and moving element proximate the lading and an external seal between the valve body and moving element proximate the free end of the ...	03/04/1997
5529314	Pump shaft lubricated bearing fluid seal assembly A fluid pumping system includes a housing that defines a fluid chamber having a wall with an aperture therethrough to communicate the fluid chamber with an outside area. A shaft extends through the aperture, and is mounted for axial rotation. The shaft ca...	06/25/1996
5348313	Radial shaft sealing ring The invention relates to a shaft seal for sealing a shaft pass-through (3) of vacuum apparatus, which accommodates a shaft (2), having at least one annular seal (4) which is disposed in a housing part and with which a barrier liquid (5) is associated, whi...	09/20/1994
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
5244183	Fugitive emission sealing assembly A sealing assembly, usable with a valve or the like, having a movable shaft within a main housing and controlling a product under a first pressure. A cartridge housing forms a continuation of the main housing. An extension of the shaft extends through the...	09/14/1993
5165699	Liquid full pressurized vessel seal A liquid full pressurized vessel seal is provided to effectively seal around rotating shafts in the walls of vessels that stir, for example, highly viscous materials such as polymers. The seal has a housing with a conventional mechanical seal and a bushin...	11/24/1992
5092609	High-pressure sealing device between two elements in relative motion A sealing device wherein at least one of the sealing assemblies comprises at least two concentrically arranged rigid wedge rings having confronted conical surfaces, the inner and outer rings having respective inner and outer cylindrical surfaces slidingly...	03/03/1992
5090711	Seal assemblies for internal mixers A seal assembly for the rotor shafts of internal mixers and the like used in the compounding of rubber and plastic. The assembly (130,170) comprises seal rotor means (130,170) carried by said rotor shaft outside of the mixing chamber of said mixer and hav...	02/25/1992
5056800	Seal assembly for internal mixers A seal assembly for the rotor shafts of internal mixers and the like used in the compounding of rubber and plastic. The assembly (20, 100) comprises seal rotor (21) carried by the rotor shafts (15, 16) outside of the mixing chamber (14) of the mixer (10) ...	10/15/1991
5024449	Seal assembly for use with an overhang A seal is particularly suited for closing the ends of an antifriction bearing which is located on a journal where its inner races are captured between wear rings and backing elements having overhangs which are directed back toward the end of the bearings ...	06/18/1991
4993720	Self-sealing mechanical seal gland for pumps and other machinery An improved "infield" cylindrical sealing gland which is constructed to be secured in mating relation providing a positive seal to the pump housing to supplement a sealing assembly for pumps and other machinery, including rotating shafts. The contacting s...	02/19/1991
4858937	Pressure controller for a buffer fluid seal The sealing apparatus is designed to automatically maintain the pressure of a buffer fluid above that of the sealed fluid. The apparatus consists of a cylinder (1) which has a movable piston (4, 5) therein. The piston (4, 5) is coupled to a valve shaft (8...	08/22/1989
4841846	Pneumatic actuators with liquid seals for oil and gas well swabs Apparatus and method for maintaining viscous liquid sealing substances such a grease adjacent and in contact with seals utilized in pneumatic cylinder-and-piston actuators for oil and gas well swabs, the structure including a piston member which is slidea...	06/27/1989
4773654	Shaft seal assembly, in particular for an apparatus for continuous processing of very viscous media A shaft seal assembly for an apparatus for continuous processing of very viscous media, in particular for producing high molecular weight polymers, having parallel shafts (1) carrying at least two cooperating processing tools (3), with which shafts feed a...	09/27/1988
4703835	Hoisting apparatus A hoisting apparatus comprising a hydraulic cylinder (1) a piston (3) whereof is connected to a load-handling attachment via a pliable member (6) which passes through a sealing device (9) that is located outside the cylinder (1) and consists of two consec...	11/03/1987
4679801	Labyrinth seal with pressurized sealing packing Labyrinth seal (11) which is suitable for providing a seal between elements in relative rotation in the presence of infiltrating substances and which is particularly, but not only, suitable for providing a seal between rolls (12) and a housing (16) of rol...	07/14/1987
4674755	Axial and radial sealing assembly An axial and radial sealing assembly comprising a protection ring which can be disposed annularly about a first body and frontally of a second body, and including a first part having a support function which carries a second part which has a sealing funct...	06/23/1987
4593914	Wellhead sealing system A wellhead sealing system comprises a casing, a tubing spool and a bushing between the casing and tubing spool. A first recess is provided in the bushing and a first casing seal is mounted therein to act between the bushing and the casing. A second recess...	06/10/1986
4564202	Seal for piston rod of Stirling engine A seal for a piston rod of a Stirling engine forcibly returns a fluid which has leaked into an intermediate chamber from this chamber to a fluid-filled chamber via an oil scraper adjacent thereto. The seal includes an O-ring secured to the piston rod at a...	01/14/1986
4552369	Stem sealing for high pressure valve A stem sealing apparatus having a plurality of inserts (40, 42, 44, 46) for accepting a flowable sealant (52, 54) between deformable seal rings (60, 62). The inserts are loosely stacked (100), and maintained in compression between a packing gland (50) and...	11/12/1985
4527900	Rotary processors and seals Novel rotary processors including sealing means to control leakage of pressure and/or material between processing passages which are maintained at significantly different pressure levels. The processors comprise a rotatable element carrying a plurality of...	07/09/1985
4483141	Stirling cycle engine having shaft seal means A stirling cycle engine including a working piston defining a working chamber, a crankshaft located in a crankchamber, a connecting rod connecting the working chamber with the crankshaft, the connecting rod being passed through intermediate members. A gas...	11/20/1984
4447061	Melt pump seal with vacuum housing A method and apparatus for preventing fluid leakage through a sealing mechanism of a melt pump into a vessel during the period of establishing a vacuum therein and increasing the viscosity of the material fed thereto. The method includes enclosing in a fl...	05/08/1984
4345768	Self pumping seal for a reciprocating member A self pumping seal for a reciprocating member (12) provides cooling fluid to the reciprocating member (12) with degradation of an elastomeric seal (34) lessened by separating the elastomeric seal (34) from the higher temperatures of the machinery. Separa...	08/24/1982
4252352	Sealing ring A sealing ring for a rotary shaft is disclosed. The sealing ring has a planar frusto-conical configuration and is received in an obliquely slanted groove provided in either the rotary shaft or the bearing surface surrounding the shaft. The use of an obliq...	02/24/1981
4206928	System for recirculating sealing liquid in a Stirling engine A system for recirculating sealing liquid back into the liquid seal portion of a Stirling engine is disclosed. The system uses two pumping devices alternatively coupled to an accumulation reservoir to receive escaped liquid and to return it to the liquid ...	06/10/1980
4123070	High pressure high temperature light gas drive shaft seal A drive shaft seal system, having an interior solid material feeder atmosphere being sealed from the outside ambient atmosphere by a sealing system of high pressure hydrogen over liquid via a low pressure seal, the high pressure liquid over the ambient at...	10/31/1978
4121842	Expansion seal An expansion seal for use with a product pipeline which extends through a larger casing is disclosed. The seal may also be adapted to function as a coupling if a leak occurs in the product pipeline. The device comprises a cap having an axial opening to re...	10/24/1978
4050360	Oil damped piston An improved oil damped piston for use in internal combustion engines, pumps, compressors, or the like. The piston includes a generally cylindrical piston body having a crown and a depending skirt. A pair of spaced bands of polytetrafluoroethylene are carr...	09/27/1977
4010960	Rotating seal Rotating seal sealing by viscous effect, intalled on a rotating shaft crossing through a bore separating, from the outside medium, an enclosure containing a fluid kept under pressure, comprising at its center two threads having an unequal length and havin...	03/08/1977
3951419	Seal between members which are rotatable relative to each other A seal assembly situated between two relatively rotatable members and axially separating a space of higher pressure from a space of lower pressure, the seal assembly including a fluid reservoir and a seal exposed to said high pressure and axially slidable...	04/20/1976

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Class 277/904 - VISCOUS SEAL