Abstract: Two identical mechanical seals (6, 7) and (8, 9) respectively and an intermediate spring device (17) are arranged in a holder which is easily replaceable. The spring (17) is common for the two seals and is connected to sockets (13) and (14) respectively which anchor the rotating seal rings (6) and (8) respectively. The oil containment area (20) of the machine is connected to the area containing the spring (17).

Abstract: An improved seal apparatus is disclosed in which the distal ends of compliant bristle elements of a conventional brush seal are disposed in a groove in adjacent structure, further being characterized by lack of contact between the bristles and structure during steady state operation of the apparatus in which the seal is installed. Sealing is afforded by the tortuosity of the leakage path. Degradation of the seal due to wear of the bristles is markedly reduced. Multiple seals in one or more constant dimension or stepped dimension grooves is also contemplated.

Abstract: A flexible protective bellows for enclosing a universal joint of a vehicle transmission is designed so that alternate folds are of different shape from the intervening ones. This reduces wear between the peaks of adjacent folds when the bellows is compressed. The troughs are formed with loops to reduce wear when the bellows is stretched. Various means for securing the bellows in its fixing groove in the housing of the universal joint are also disclosed as are means for incorporating a toothed ring for use in speed measurement for the vehicle's ABS system.

Abstract: A mechanical labyrinth seal for rotating shafts having a first, second and third ring member. The first ring member has a series of annular axial grooves in the internal bore and a slot extending across the grooves to an end of the first ring. The second ring member is adapted for insertion into an annular recess in the first ring member. The third ring member connected to the second ring member and forming with the first ring member a unitary seal. The second and third ring members rotate with the shaft. The first ring member is fixed to the machine having the shaft to be sealed. The seal permits axial movement of the shaft without separation of the rings.

Abstract: A brush seal is formed by bristles tightly packed between two annular sideplates having different inner radii and secured to a housing. The free ends of the bristles are in rubbing contact with a shaft. The differential pressure which the seal can support is increased by loading the bristles against the annular sideplate having the smaller inner radius, the loading force being such that the bristles can still move in the plane of the seal. As a result the amount of relative movement of shaft and housing that the seal can tolerate is not reduced.

Abstract: A ring shaped seal (10) for preventing fluid flow through a gap (32) between a rotating shaft (30) and a cylindrical wall (34) is positioned in a groove (28) in the shaft. The seal has, in cross section, a generally rectangular body (11) that has a slightly lesser width than the width of the groove. The body has a first end wall (12) that includes first pockets (18) and a second end wall (14) that includes second pockets (20). The seal has an outer wall (22) with a contact portion (26) that is in abutting contact with the cylindrical wall. When a higher pressure is applied on one side of the seal, the end wall of the seal on the side away from the higher fluid pressure is pushed against a side wall of the groove. The pockets in the end wall of the seal that is pushed against the groove, are open to the higher pressure and exert a force which counteracts the forces pushing the end wall of the seal against the side of wall of the groove.

Abstract: A symmetrical elastomeric seal for providing a fluid-tight joint in the annular space between the spigot of one pipe and the bell of an adjoining pipe. The gasket includes tapered ribs projecting from an annular web with their peripheries forming a continuous raised rim. The ribs are symmetrically tapered about axially-spaced parallel planes. A clamp may be installed between adjacent ribs to positively secure the gasket on the spigot. The hardness of the elastomer in the web relative to the ribs may vary according to the fluid pressure of the joint.

Abstract: A lubricating seal construction for a pneumatic cylinder (10) includes a lubricating rod seal (40) and lubricating piston seals (27, 29). The rod seal includes a cavity (66) for holding a supply of viscous flowable lubricant. The piston seals include cavities (100) for holding the supply of similar lubricant. Passages (70) extend from the cavity in the rod seal to apertures (72) adjacent an outer surface (52) of a moveable piston rod (30). Passages (104) extend from the cavity in the piston seals to apertures (106) adjacent an inner surface (26) of the cylindrical chamber (24) inside the cylinder. The seals are made from resilient material and are filled with lubricant during assembly of the cylinder. As the cylinder is cycled, lubricant passes from the cavities as required to lubricate the seals and adjacent moving surfaces.

Abstract: For carrying out lubrication between a piston (17) and a piston ring (21) installed in an annular groove (23) of the piston, the piston ring comprises a recessed portion (15a, 15b) which is partially recessed from an upper axial end (27) of the piston ring. Lubricating oil is mixed with blow-by gas and flows into the annular groove through the recessed portion. As a result, the lubricating oil is effectively supplied to the annular groove. Therefore, the lubrication is favorably carried out between the piston ring and the piston. The piston ring may be formed from a piston ring member (10) of a ring-shaped plate which has the recessed portion on an outer peripheral surface (13) thereof.

Abstract: The gasket of the invention is installed in an internal combustion engine having a hole to be sealed. The gasket is formed of first and second outer plates, and a middle member situated between the outer plates. A main sealing member formed of a wire ring is situated between a base portion of the first outer plate and the second outer plate around a curved portion of the first outer plate to define the hole of the engine. An auxiliary sealing member having a thickness less than that of the main sealing member is situated between the curved portion and the main sealing member. When the gasket is tightened, the main sealing member is compressed up to the thickness of the auxiliary sealing member to provide moderate surface pressure by the auxiliary sealing member near the hole and high surface pressure by the main sealing member away from the hole to be sealed. The surface pressure of sealing portions can be easily controlled.

Abstract: This invention relates to a grit protector for rotating fluid processing equipment. The protector is placed in or adjacent the seal cavity of the equipment and includes an axial portion and a generally radial flange which, when the device is within the seal cavity, has an inner diameter slightly greater than the shaft. The flange has at least one low flow vent therein, the vent being defined by a radial slit in the flange, an arcuate slit along the periphery of the flange adjacent the axial portion, and a bend line extending from the radial inner end of the radial slit to the extended end of the arcuate slit. The material of the slit as bounded by the slits and the bend line is curved inwardly and radially outwardly to define a vent entrance adjacent the first slit to define a flap. The flap has a short generally straight portion extending from the vent entrance and then curves smoothly towards the flange.

Abstract: A metal gasket includes plural functional layers formed with embossments along peripheral edges of cylinder openings thereof and a backup plate not formed with any embossment and sandwiched between the functional layers. At least one edge plate is provided which is spaced radially within and is coplanar with peripheral edges of cylinder openings of the backup plate. The edge plate is different in thickness from, generally thinner than, the backup plate. Grommets are provided to fasten together the edge plate and portions of the functional layers overlapping the edge plate. With this arrangement, by selecting thicknesses of the edge plate and the backup plate so as to be different between them by a requisite value, surface pressure at peripheral edges of cylinder openings of the metal gasket can be set a desired value. Therefore, this metal gasket is superior in sealing performance and uniformity.

Abstract: A spiral wound gasket comprises an annulus constituted by a plurality of superposed turns of a profiled metal strip wound upon itself to form a spiral and, interposed between at least some of said superposed turns, a number of turns of a relatively soft sealant material in strip form, the thickness of said metal strip being selected so that prior to use the wound metal spiral is essentially flush with the surface of an associated guide ring and the thickness of the strip of relatively soft sealant material being selected so that prior to use, it projects a significant distance on both sides of the gasket from said superposed metal turns axially of said annulus. The preferred relatively soft sealant material is exfoliated graphite foil, which projects from the metal spiral to define an overall gasket thickness on the order of 25 to 40% greater than that of the guide ring.

Abstract: A tubular member comprises a tubular body made of rubber. The tubular body has a base portion, a head portion, and a plurality of annular grooves or annular projections formed in an inner wall of the body. The base portion is arranged to be secured to a guide member of an actuator, and the head portion is arranged to be engaged with a rod slidably supported in the guide member.

Abstract: A seal assembly having an exclusion portion and a seal portion so that the assembly functions as both a sealing and exclusion device. The seal portion includes surfaces which are shaped to provide chambers that create vortexes which reduce leakage of fluid or gas from the system. The exclusion portion, in combination with the seal portion, is shaped to prevent entry of contaminants into the system being sealed and to reduce extrusion of the excluder portion of the seal. Three different embodiments of the invention are disclosed using different elastomer energizer configurations.

Abstract: A hydraulic seal for sealing between two hydraulic components (1, 2) that move axially one within the other comprises a first pressure-energized ring seal (3) located between the components so as to respond to hydraulic pressure on an axially directed inner face of the seal, and a second ring seal (7) located adjacent the inner face of the first seal (3) so as to control the flow of hydraulic fluid to the first seal. The second ring seal (7) is located in an annular groove (8) in one of the components (1) with an outer annular face (11) that is directed axially towards the first seal (3) and lies opposite an adjacent side wall (13) of the groove (8) to be supported thereby. A sealing lip (9) protrudes from the groove (8) and has a radially directed annular sealing face (15) to engage in face-to-face contact with the other of the components (2).

Abstract: A gasket is formed by encapsulating a thermally conductive low melting temperature material or core in a plastic skin. The low melting temperature material conforms to the shape of the interface completely filling all voids once heated above its melting temperature. Since the low melting temperature material is encapsulated in a plastic skin, there is no danger of contaminating parts of the assembly. The gasket is easily applied and removed in all applications, is re-usable, and the thickness can be as thin as 0.010 inches.

Abstract: A cleaner suction nozzle is provided in which provisions are made for a nozzle height elevation arrangement and a hose conversion valve arrangement. The hose conversion valve arrangement works in conjunction with the nozzle height elevation arrangement so that the suction nozzle can be elevated from the floor to disengage the cleaner agitator and then hose conversion of the cleaner can occur almost simultaneously.

Abstract: A curtain used in a mechanized vehicle washing system includes a base mounting the curtain for reciprocating motion and a plurality of elongated strips hanging downwardly from the base. Each strip has two opposite side surfaces. A plurality of independently movable shingles are provided on the two opposite side surfaces of each of the plurality of elongated strips. Each shingle is made of a deep pile, fur-like material.

Abstract: A packing containment assembly for sealing an operating member such as a shaft or stem in a fluid control valve, particularly where PTFE packing is used. A pair of zero clearance anti-extrusion rings of PEEK material are mounted in the shaft with the PTFE packing therebetween. Each ring has an inner diameter slightly less than the shaft outer diameter to form an interference fit. The rings are split with a scarf cut to provide an overlapping joint and enable mounting of the rings on the operating member. A male adapter PEEK ring matches a V-type female packing ring which significantly reduces the amount of PTFE packing needed for a reliable seal. A step cut PEEK zero clearance anti-extrusion ring could be used as well as a fractured carbon ring.