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Class 277/503 - Accommodates gyratory or oscillatory motion


Subclass of Class 277 - Seal for a joint or juncture
Definition: Dynamic, circumferential contact seal wherein the seal permits
No. of patents: 40
Last issue date: 05/02/2006


NumberTitleIssue Date
7036824Device for the float mounting a sealed housing
A device for float mounting a sealed housing around a rotating, deflecting shaft. A sealed housing is connected to a static part in such a way that it can yield radially as well as rotate around a shaft axis at least to a small extent. ...
05/02/2006
7017913Axial shaft seal
An axial shaft seal disposed between a housing wall and a rotating shaft includes an outer ring insertable into the housing wall in a stationary and sealing manner and an inner ring connectable to the shaft in a non-twisting and sealing manner. The outer ring includ...
03/28/2006
6702293Seal member mounted between cylinder head cover and ignition plug tube
A seal member adapted to be mounted between a cylinder head cover and an ignition plug tube comprises a mount portion interposed radially movably between an upper surface of an annular stepped portion formed around an opening of the cylinder head cover fo...
03/09/2004
6585416Self-aligning shaft support
A guide to support a shaft such as a pump pull rod (11) which is capable of both rotary and reciprocal motion. The guide prevents any misalignment of rod (11) damaging a seal, e.g. a stuffing box, held in space (24). Guide element (18) has central portion...
07/01/2003
6394463Oil seal
The oil seal of the present invention for a valve stem includes a triple seal lip having a cam chamber side lip, a first combustion chamber side lip and a second combustion chamber side lip. Notches are provided on the second combustion chamber side lip a...
05/28/2002
5810570Super-low net positive suction head cryogenic reciprocating pump
A novel reciprocating pump for cryogenic fluids having a super-low NPSH requirement. The pump has a spring-loaded intake valve made of magnetic material and a reciprocating piston having a permanent magnet at its head end. The intake valve is positioned s...
09/22/1998
5799950Lubricated joint with equalizing pressure zone
The present invention includes a means of equalizing pressure within a sealed pin joint assembly. The pin joint assembly includes slidably connecting a pin through a bearing assembly fitted within a bore in an equalizer bar. The pin is circumferentially s...
09/01/1998
5791653Sealing ring for sliding units operating at very low temperatures
Sealing ring (1) for sliding units (3,7) operating both at very low temperatures and at high pressures, comprising at least one pair of layers (1a) of graphite-based material alternating with at least one supporting ring (1b) made of metallic material....
08/11/1998
5615755End piece seal for a rail vehicle slack adjuster
An end piece or barrel head (1) for a rail vehicle axial slack adjuster is at its outer periphery connected to a barrel (2) of the adjuster and is arranged around a rotatably and axially movable tube (3). The end piece is provided with an internal, circum...
04/01/1997
5458343Aircraft engine firewall seal
An aircraft engine firewall seal includes a plurality of discrete, stacked-together sealing disks each have a central hole sized for receiving a feed-through member therethrough, with the disks being larger in outer diameter than the firewall aperture thr...
10/17/1995
5439233Large annular segmented seal with lock portions for missile launch tube
A hoop seal for a large annular opening having a high strength ring disposed in the hoop, the hoop having a sealing lip extending at an angle into the high pressure side of the seal, a base and a membrane connecting the hoop to the base which allows the h...
08/08/1995
5380288Surgical cannula and trocar system and method of using the same
An improved surgical cannula and trocar system for use in laparoscopic surgery. The system includes a novel surgical cannula including shield means for protecting operating room personnel from accidental contact with the trocar's sharp tip. The surgical c...
01/10/1995
5380016Radial lip seal
A radial lip seal for sealing about a pin of a hinge joint is disclosed. Such seal includes an outer mounting ring, a rubber flex ring mounted inside the mounting ring, a tension ring mounted inside the flex ring, and an inner elastomeric seal ring mounte...
01/10/1995
5335921Bearing alignment device for pillow blocks
An improved alignment device and/or sealing device for creating an alignment of seals in split pillow block. An alignment device having a cylindrical member surrounding a shaft includes a plurality of sacrificial bearings fitted to the inside diameter of ...
08/09/1994
5315912Suspended hoop seal
A seal for a large annular opening between a launch tube and a missile comprising a suspended hoop composed of a pair of cylindrical rings spaced apart by axially disposed chevron-shaped struts, the inner cylindrical ring having a frustoconically shaped l...
05/31/1994
5257812Polished rod protection and sealing device
A reciprocable polished rod projects through a housing and a stuffing box downstream of the housing. A plurality of packings are provided in the upper portion of the housing and contacting the rod preventing fluid leakage from the housing. A retainer hold...
11/02/1993
5137285Sealing system for mutually rotating machine parts
The sealing system consists of a commercially-available shaft seal (2), having a covering ring (3) to protect the shaft seal dirt and from exposure to the atmosphere. The covering ring (3) pre-arranged separately outside the conventional flexible shaft se...
08/11/1992
5085444Dust seal for sliding type bush
A dust seal for a sliding type bush is interposed between a stationary section and a movable section. The dust seal has a fitting portion fitted to the stationary section, a seal lip portion in sliding contact with the outer circumferential surface of the...
02/04/1992
4890702Brake or clutch assembly
A brake or clutch assembly including a drum (18) and a transfer tube (36) for supplying hydraulic fluid to the drum (18). The transfer tube (36) includes a ring-like seal (59) for sealingly engaging the interface between the transfer tube (36) and the dru...
01/02/1990
4832511High efficiency seal devices for shaft bearings
A seal system for a bearing having a housing with a chamber therein for receiving a shaft supported by a bearing assembly therein. The sealing system includes three and preferably four seal devices integrally related by means of a seal ring detachably ret...
05/23/1989
4765227Die cylinder assembly
A die cylinder assembly is designed for use in an environment which has contaminants outside the assembly. The die cylinder assembly includes a piston disposed in a cylinder and having an outer end surface. The piston is moved in one direction by forces a...
08/23/1988
4754984Dual-seal-ring shaft seal
An intershaft seal device between inner and outer coaxial shafts of a mulle spool turbine is characterized by a primary seal ring and carrier assembly that is keyed for rotation with, and axial movement relative to, the outer shaft with the primary seal ...
07/05/1988
4553760Flexible seal for a spherical joint
A flexible seal assembly has an elastomeric body with a convoluted intermediate portion for accommodating pivotal movement about the center of a spherical joint and an integral radial seal lip for accommodating rotational movement about a central axis of ...
11/19/1985
4537409Radial rock bit seal
An improved radial rock bit seal for utilization with earth boring drill bits which employ rolling cutters mounted on shafts extending from face surfaces on the drill bit body. The improved seal includes a cylindrical body which is disposed around each sh...
08/27/1985
4469332Seal for a tubular mill
A tube mill operated under superpressure in the milling chamber is sealed by means of blocking air, which is made available in a blocking air chamber (9) arranged on the stationary part of the journal (2) of the tube mill. A blocking air channel is provid...
09/04/1984
4457518Inflated seal for large annular openings
A seal for a large annular opening between two generally cylindrical surfaces. The seal being formed of a first portion having a base ring and a toroidal shaped arcuate portion extending from the central portion of the base ring, a lip portion extending r...
07/03/1984
4411478Rolling bearing for lengthwise guiding of a shaft or the like
A rolling bearing for lengthwise movement along a shaft comprised of an outer sleeve having a plurality of races therein for rolling bearings, a cage being provided to guide the rolling bearings. A sealing ring is provided at each end of the assembly, the...
10/25/1983
4377289Furnace electrode seal assembly
An electric furnace electrode seal assembly includes a seal ring mounted on the furnace adjacent the electrode opening. The seal ring is stationary and supports a telescoping arrangement of a plurality of cylindrical sealing glands which can be air or con...
03/22/1983
4373599Hydraulic rack steering system
A hydraulic rack steering system is provided with a unitary seal assembly around a piston rod which is a composite of compressible toroidal gaskets having an intermediate pre-stressing ring constructed and arranged to radially stress a plastic sealing rin...
02/15/1983
4337953Sealing device with seal lips forming V-shape
A sealing device has a single rubber seal member provided with two oppositely directed seal lips which form a V-shaped cross-section and which are in contact with a spherical surface. Grease is filled in the V-shaped space. A portion of an outer fitting m...
07/06/1982
4324407Pressure actuated metal-to-metal seal
A seal assembly permitting a conduit member to be sealed within a bore in metal-to-metal relationship wherein a seal ring of a conical configuration in the relaxed state is deformed toward a flattened condition to increase its radial dimension and establi...
04/13/1982
4295653Pressure-compensated diaphragm seals for actuators, with self-equalization
The invention has especial utility for providing completely safe hermetic sealing of actuators extending into highly sensitive or isolative process equipment, such as that using atomic radiation. The invention uses a general principle taught by the invent...
10/20/1981
4244588Shear seal assembly
PCT NO. PCT/US79/00943 Sec. 371 Date Nov. 5, 1979 Sec. 102(e) Date Nov. 5, 1979, PCT Filed Nov. 5, 1979. A shear seal assembly (80) for sealing between two members (22,36) having limited relative motion therebetween has an inner sleeve (86), an outer slee...
01/13/1981
4177997Floating seal
A high pressure floating ring assembly includes a floating ring having a sealing surface thereon closely fit with respect to the outer diameter of a cylindrical shaft and wherein relative motion occurs between the inside diameter of the floating ring and ...
12/11/1979
4103942Seal for submersible pipe swivel
A submersible large diameter pipe swivel is provided with seal means which is designed and adapted to allow small radial and axial relative movements (wobble) between the pipe and the swivel joint, while maintaining full integrity of the seal and which, b...
08/01/1978
4077636Self-aligning cable rod seal
A self-aligning, wear-resistant seal assembly is provided for a cable rod slidably positioned within a cable conduit. A rigid nylon ring which fits snugly around the rod is held against the end of the conduit by an elastomeric seal. The seal has an end wa...
03/07/1978
4053030Piston seal and return spring
A seal for use on a disc brake piston/caliper assembly which seals the piston and also functions as a piston-return spring. The seal has a seal-retaining portion, a sealing lip portion, and a radially extending flex portion therebetween for retracting the...
10/11/1977
3980309Two-part scraper-type shaft-seal
A scraper-type shaft seal comprises an outer C-section ring which is received in an inwardly open groove in a housing and which itself receives the outer periphery of an inner ring formed with a lip which engages the outer surface of a shaft to be sealed....
09/14/1976
3953037Polished rod protector and receiver
An extensible polished rod protector having alternating inner and outer diameter portions defining adjacent convolutions, and annular retainer members in the form of radial, reinforcing support plates within the outer diameter portions for preventing radi...
04/27/1976
3939877Weaving machine having a border forming means
The means for forming a fabric border is constructed with a cover to cover over the opening in the housing through which the operating element projects. The cover is formed by flange projections on the drive means for moving the operating element or by a ...
02/24/1976
 
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