Abstract: A composite oil-ring comprising an oil control ring disposed on a lower surface of an oil-ring groove, a seal ring disposed on the oil control ring and having substantially no oil path in the radial direction thereof, and a spring seal ring disposed between an upper surface of the oil-ring groove and the seal ring which is constituted as a Belleville spring structure having abutted end portions with no gap in the circumferential direction. The spring seal ring presses upwards against the upper surface of the oil-ring groove and presses downwards against the seal ring, the seal ring is pressed against the oil control ring, and the oil control ring is pressed against the lower surface of the oil-ring groove, by the spring force of the spring seal ring. Both the spring seal ring and seal ring have substantially no oil path in the radially outer direction.

Abstract: A dry running gas seal includes a stationary seal ring carrier attached to the machine body wherein the stationary seal ring carrier has an annular pocket, a stationary seal ring held in the pocket, a rotary seal ring carrier fixedly attached to the shaft wherein the rotary ring carrier has an annular pocket, a rotary seal ring held in the pocket wherein the rotary seal ring has a sealing face held adjacent to the stationary seal ring and grooves formed on the sealing face of the rotary seal ring wherein the grooves have an average angle of 5 to 15 degrees. The seal further comprises: an annular notch formed in a portion of the stationary seal ring axially away from the rotary seal ring, a "T" shaped insert extending into the notch, and an "O" ring disposed between the insert and the inner walls of the pocket in the stationary seal ring carrier. The seal further includes an annular groove formed in the radially inner wall of the rotary seal ring carrier, and a finger spring disposed in the groove.

Abstract: A honeycomb labyrinth seal includes a downstream-most row of honeycomb cells which extends beyond the exit edge of a base portion, so that a portion of each cell of the downstream-most row of honeycomb cells overhangs the base portion by an amount approximately equal to one half the width of the drainage passages formed in the base portion.

Abstract: The present invention is directed to a seal for demountable joints operating over a wide temperature range down to liquid helium temperatures. The seal has anti-extrusion guards which prevent extrusion of the soft ductile sealant material, which may be indium or an alloy thereof.

Abstract: A steam turbine gland seal arrangement for use in a steam turbine which has at least one casing and a shaft extending through the casing so that steam may be admitted into the casing for operating on blades attached to the shaft for effecting rotation thereof. An inner gland and an outer gland are provided at one end of the shaft where the shaft exits the casing. Each of these glands support seals in close proximity with the shaft for preventing steam from escaping the casing. The inner gland is supported within an aperture in the casing where the shaft exits, and the outer gland is attached to an outer surface of the casing surrounding the aperture. The arrangement further includes an annular seal plate which circumscribes the turbine shaft and has an inner radial portion attached to an outer surface of the inner gland. An outer radial portion of the annular seal plate is cantilevered from the inner attached portion.

Abstract: An annular shaft seal apparatus of the labyrinth type includes at least two pair of axially stacked thin annular diaphragm members. Each of the diaphragm members includes an annular array of radially and circumferentially extending finger portions defining gaps therebetween. The diaphragms of each pair are so disposed that the fingers of each block the gaps of the other. One of the pairs of diaphragm members is right-handed with respect to circumferential angulation of the finger portions, while the other pair is left-handed. Thus, sealing integrity is maintained by the finger portions regardless of the direction of shaft rotation.

Abstract: A seal for a linear displacement optical transducer has a tubular flexible bellows which is joined at one end to a movable carriage supporting an optically encoded track and which is movable along a cylinder supporting an optical read head. The bellows extends within the cylinder and has its other end sealed to an open end of the cylinder. A compensation chamber is sealed to the outside of the cylinder to enclose a major part of the length of the bellows and forms a sliding seal with a push-rod extending from a carriage. The bellows encloses a first volume of the dry inert gas within the cylinder to one side of the bellows and a second, similar volume of gas on the other side of the bellows and in the compensation chamber. Displacement of the carriage causes only a small change in pressure across the bellows which is accommodated by flexure.

Abstract: An annular fluid seal is provided between a pair of spaced apart machine components, such as a rotor and a stator. The rotatable component includes an annular sealing surface of increasing diameter in a given direction (e.g., along its length or along a radially extending shoulder). An annular fibrous sealing element is disposed proximate the clearance space between the components in such a manner that a sealing portion thereof engaging the other component moves in the direction of increasing diameter as the sealing portion may wear so as to maintain sealing contact with the annular sealing surface. A fluid seal is thereby maintained between the components.

Abstract: An elastomeric seal for joining together a casing part which mates within a recess in a second casing part and which locates both casing parts with respect to each other and forms a liquid tight seal therebetween. Preferably the seal is of a "J" or "L" shaped profile.

Abstract: An improved seal at the junction of a pipe or tube to an opening formed in a flat wall or in the wall of a cylindrical or rounded container, including axially tapered exterior and interior peripheral surfaces. The tapers of such surfaces being different one from the other and being of such a degree that, when the seal is inserted into the opening in the receiving member and the pipe is inserted therethrough, the material from which such seal is fabricated is forced to bulge around the periphery of the opening, thereby securing the pipe in the opening and perfecting the seal therebetween.

Abstract: A seal for a thread drive including several ring parts arranged one within the other, to provide a dependable and compact unit comprised of a few parts. A sealing ring which surrounds and rests against the threaded spindle is comprised of rigid plastic. The sealing ring is a single thread section with axially separated ends which are integrally joined together by a transverse connection which closes the thread gap between the separated ends. A pretensioned tension ring surrounds the sealing ring. A housing ring surrounds both other rings. A wiper or scraper may be located on the sealing ring opposite the transverse connection.

Abstract: This invention relates to a fluid sealing mechanism for the inside diameter and or the outside diameter of a piston-cylinder arrangement. This device results in substantially zero seal leakage path with low differential seal pressure required using only one piston ring, one ring groove, and very loose dimensional tolerances required on both the ring and related groove. This yields an inexpensive more positive seal for fluid piston-cylinder configuration used in industrial, commercial, and personal use. This invention further relates to a bi-directional sealing assembly wherein one or more of the sealing rings are used in combination with a compression spring.

Abstract: The improved annular seal of the present invention provides a seal across an annular space between facing cylindrical surfaces and includes an outer annular ring, inner annular ring, the gap between the outer annular ring and the inner annular ring being suitably sealed at one end thereof so that the open end is open to admit pressure which is to be sealed between the two rings, an outer sealing element on the exterior of said outer annular ring, and an inner sealing element on the interior of the inner annular ring so that pressure exerted between the annular rings urges them apart and their sealing elements against the surfaces of the annular space. In another form of the invention three annular rings are provided with one end of the inner and outer rings being sealing to the end of the intermediate ring and with sealing elements on the exterior of the outer ring and on the interior of the inner ring so that the sealing elements are urged into sealing engagement with the surfaces of the annular space.

Abstract: A glove is equipped with a mouthpiece containing an air passage. The mouthpiece allows the wearer to puff air into the space between the glove and the skin of the hand. The puffed up glove is much easier to doff and don than a conventional glove. A puff-off wetsuit glove for use in underwater activities is described in detail.

Abstract: A pump includes an annular runner and annular seal ring mounted for undergoing relative rotation. The runner includes an annular support member and an annular faceplate member. The faceplate member has a sealing surface and is mounted by a clamp ring member to the annular support member.

Abstract: A unitized oil seal having an annular inner seal case (12) having a J-shaped cross section formed by an inner wall (24) and a first axial flange (28) interconnected by a first radial flange (26). The oil seal also has an annular outer seal case (14) having a J-shaped cross-section formed by an outer wall (40) which is connected to a second axial flange (44) by a second radial flange (42). A primary seal element (16) is secured to the second axial flange (44) and extends to the outwardly facing surface (54) of the inner wall (24). An auxiliary seal element (18) is secured to the first axial flange (28) and extends to the inwardly facing surface (38) of the outer wall (40). In one embodiment, the primary and auxiliary seal elements (16) and (18) may be cammed over radially extending lips (56) and (58) formed on the inner and outer walls (24) and (40). Separation of the inner and outer seal cases (14) and (16) is resisted by radial pressure exerted by the seal elements and the radial lips.

Abstract: A seal cartridge assembly is provided for providing a seal between a non-rotatable housing or casing member and a rotatable shaft and includes a housing comprised of overlapping annular case members. Each case member includes an outer peripheral wall portion and an annular flange portion extending radially inwardly from the outer peripheral wall portion. The two case members are press fitted together in overlapping relationship and held together by a bonded rubber belt to provide a U-shaped cartridge housing which is press fit and sealed to an inner bore of the non-rotatable housing. An annular sealing member is positioned within the cartridge housing and is adapted to be engageable with the shaft and rotate with the shaft within the U-shaped cartridge housing. The annular sealing member includes lip extensions extending outwardly therefrom which engage the annular flange sidewalls of the cartridge housing to provide a seal between the annular sealing member and the cartridge housing.

Abstract: 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 and, as such, encircle the wear rings. Indeed, a seal exists at each end of the bearing for isolating the annular space between the inner and outer races of the bearing. Each seal includes a case that is fitted into the end of the outer race and projects axially from that race as well as radially inwardly toward the wear ring. In addition, it has two elastomeric lips which are presented toward the wear ring, one being configured primarily to retain lubricant in the annular space between the two races of the bearing and the other to exclude contaminants from that space. The seal also has an elastomeric spray shield which is attached to the case and projects radially outwardly from it toward the overhang.

Abstract: A seal assembly for antifriction bearings in which a cone and a cup have raceways for roller bearings, a seal case carried by the cone and by the cup for supporting a seal element on each of the seal cases to provide a space therebetween for retention of a body of lubricant in position to create a barrier for blocking the ingress of contaminants from the exterior. One of the seals is positioned to be exposed to the outside to have a lip operative on one of the seal cases to preclude the ingress of contaminants, and the other one of the seals is exposed to the bearing interior to allow lubricant to pass into the cavity between the seals and also to assure the presence of lubricant to the interior of the bearing assembly.

Abstract: A length of plastic material may be formed into a helix and lantern rings may be cut therefrom for utilization with conventional packing adjacent a shaft in rotating or reciprocating equipment. The material exhibits a generally H-shaped cross-section defined by continuous side walls extending between radially inner and outer edges. Radially inner and outer surfaces are spaced inwardly from the inner and outer edges respectively. A plurality of generally radially extending holes pass from the outer surface to the inner surface and are spaced apart along the length of the material. These holes are utilized for the passage of cooling and lubricating fluid to the rotating shaft. Also, a plurality of generally axially extending holes pass from one side wall to the other and are spaced apart along the length of the material. These holes are utilized for extraction of a lantern ring from a stuffing box should the necessity arise. Several methods are also disclosed for producing the aforementioned product.