Abstract: A packing member has a unique improved geometry particularly adapted to the manufacture of urethane seal having a Shore A hardness of from about 90 to about 100, the packing member including an annular body defining a central opening and an annular axis, the annular body having an upper sealing portion and a lower support portion and a groove extending into the upper sealing portion, the groove having an outer outwardly inclined wall, an inner inwardly wall and a bottom wall; the upper sealing portion of the annular body including radially extending inner and outer sealing lips formed adjacent to at least a portion of the groove, the outer sealing lip extending axially beyond the inner sealing lip.

Abstract: A packing member having an annular body with a circular outer wall and circular inner wall, with first and second end walls extending between the inner and outer walls includes a relatively soft upper portion formed from an elastomeric polymeric material having a Shore A hardness of between about 65 and 80 and a fabric reinforced, harder lower portion formed from elastomeric polymeric material having a Shore A hardness greater than the Shore A hardness of the upper portion. A groove, having a lower wall extends axially into said annular body through the first end wall and defines a plane perpendicular to an annular axis. The upper portion of the annular body includes inner and outer sealing lips formed adjacent to at least a portion of the groove, the outer sealing lip extending vertically beyond the inner sealing lip and the inner sealing lip having an inner sealing edge intersected by the plane defined by the lower wall of the groove.

Abstract: A packing member having an annular body with a circular outer wall and circular inner wall, with first and second end walls extending between the inner and outer walls includes a relatively soft upper portion formed from an elastomeric polymeric material having a Shore A hardness of between about 65 and 80 and a fabric reinforced, harder lower portion formed from elastomeric polymeric material having a Shore A hardness greater than the Shore A hardness of the upper portion. A groove, having a lower wall extends axially into said annular body through the first end wall and defines a plane perpendicular to an annular axis. The upper portion of the annular body includes inner and outer sealing lips formed adjacent to at least a portion of the groove, the outer sealing lip extending vertically beyond the inner sealing lip and the inner sealing lip having an inner sealing edge intersected by the plane defined by the lower wall of the groove.

Abstract: A packing member having an annular body with a circular outer wall and circular inner wall, with first and second end walls extending between the inner and outer walls includes a relatively soft upper portion formed from an elastomeric polymeric material having a Shore A hardness of between about 65 and 80 and a fabric reinforced, harder lower portion formed from elastomeric polymeric material having a Shore A hardness greater than the Shore A hardness of the upper portion. A groove extends axially into said annular body through the first end wall and defines a plane perpendicular to an annular axis. The upper portion of the annular body includes sealing lips formed adjacent to at least a portion of the groove, the outer sealing lip extending vertically beyond the inner sealing lip and the inner sealing lip having an inner sealing edge. The inner sealing lip is inclined inwardly to form the sealing edge for sealing engagement when in slidable contact with a separate moveable part.

Abstract: A muffler for reducing fluid flow noise in a hydraulic system comprises a cylindrical elastomer insert having multiple reinforced flow ports with different diameter porting, internal air chambers, and cast from an elastomer mixed with hollow glass spheres to form an insert of 40 percent air by volume. The insert is placed within a housing and connected to the hydraulic pipe assembly for receiving fluid under pressure and diverting it through the multiple flow ports of the insert wherein flow sounds, pump surges, and flushing noises of the hydraulic system are muffled by the disruption of the flow through the flow ports, the absorption by the internal air chambers, and the absorption by microspheres created by the hollow glass spheres in the elastomer insert.

Abstract: Apparatus for lubricating pistons having a pressure metered lubrication reservoir in fluid flow attachment with the piston through a lantern port in the wall of the stuffing box surrounding the piston. A check valve in fluid flow alignment between the stuffing box and the lubrication reservoir prevents the flow of spent hydraulic fluid from the stuffing box into the lubrication reservoir in the event of a seal leak or failure. A safety valve having a higher trigger pressure than the pressure of the lubricant flowing from the reservoir to the stuffing box and being in fluid flow alignment with the stuffing box and lubrication reservoir prevents the escape of lubricant flowing from the reservoir to the stuffing box, but allows the escape of spent hydraulic fluid in the event of a seal leak or failure.

Abstract: A method of manufacturing polymer seals consisting of bonding together a combination of cured pre-polymers to form a single multi-layered seal of varying hardness urethane with at least one pre-polymer being a polyester based pre-polymer and at least one pre-polymer being a polyether-based prepolymer.

Abstract: A polymer seal and method of making same consisting of a combination of pre-polymers cured and bonded together to form a single multi-layered seal of varying hardness with at least one pre-polymer being a polyester-based pre-polymer and at least one pre-polymer being a polyether-based pre-polymer. The different pre-polymers, upon curing, yield 80 to 90 shore A and 80 to 90 shore D hardness urethanes respectively.

Abstract: A vertical alignment apparatus has a light and a light fixture attached to a cable to be lowered into the cylinder to be aligned. A disk mounted on top of the light fixture and centered about the light fixture and the cable causes the light emitted from the light fixture to form a halo between the disk and the wall of the cylinder. A tripod on top of the cylinder movingly centers the light, light fixture and disk in the cylinder. The method of the invention involves lowering the apparatus into the cylinder. The light fixture is activated to create a halo of light around the disk. The light fixture is then raised up the casing, and the casing is adjusted until the halo has circular consistency.

Abstract: A packing member comprising an annular body having a circular groove extending axially thereinto through an end wall to form inner and outer sealing lips utilizes a resilient circular member embedded in the annular body to exert a radially directed force to a wall surface of the groove to actuate one of the sealing lips. The other sealing lip has a plurality of spaced apart circular holes extending axially there into through the first end wall of the body. In the preferred embodiment the resilient member is a hollow O-ring of elastomeric material carried in a recess formed in the inner wall surface of the groove to actuate the inner sealing lip. An annular layer of self-lubricating polymeric material is disposed over the inner wall surface to facilitate low-friction slidable contact with a separate movable member.

Abstract: An elastomeric O-ring seal (10) for sealing between a housing (20) and a shaft (22). The seal (10) defines an inner sealing surface (12) and an outer sealing surface (14) having a generally uniform non-deformed radius of curvature in cross section. An upper protrusion (16) and a lower protrusion (18) extend outward of a circle defined by this radius in cross section to prevent the seal (10) from rolling when placed in sealing engagement with the housing (20) and shaft (22). This reduces the wear on the seal (10) and permits a longer surface life.

Abstract: A seal for use in the gear housing (52) of an elevator hoist drive mechanism (10) is provided. The first embodiment, seal (98), is generally formed of an annular body of elastomeric material having an outer sealing section (102) with first sealing surface (104) for engagement with the inner rim (86 and 88) of gear housing (52), an inner sealing section (106) with second sealing surface (108) for engagement with cylindrical connecting drive shaft (69) and a bonding wall (100) for securing seal (98) on gear housing (52). Sections (102 and 106) are separated by a V-shape groove (124) to insure independent resilience of the sections. Seal (98) is split to form ends (112 and 114) to simplify installation.The second embodiment, seal (132), is generally formed of an annular body of elastomeric material having a fabric coating.

Abstract: A seal for use in the gear housing (52) of an elevator hoist drive mechanism (10) is provided. The first embodiment, seal (98), is generally formed of an annular body of elastomeric material having an outer sealing section (102) with first sealing surface (104) for engagement with the inner rim (86 and 88) of gear housing (52), an inner sealing section (106) with second sealing surface (108) for engagement with cylindrical connecting drive shaft (69) and a bonding wall (100) for securing seal (98) on gear housing (52). Sections (102 and 106) are separated by a V-shape groove (124) to insure independent resilence of the sections. Seal (98) is split to form ends (112 and 114) to simplify installation.The second embodiment, seal (132), is generally formed of an annular body of elastomeric material having a fabric coating.

Abstract: An elevator connection (22) is provided for joining an elevator car (10) to a hydraulic piston (20) which raises and lowers the elevator car (10). Misalignment between the hydraulic piston (20) and guide rails (14) of an elevator shaft (12) is accommodated by a washer assembly (28) and cushion assembly (30) disposed between a stud bolt (32) and the top of the hydraulic piston (20). Washer assembly (28) includes an elastomeric disc (34) together with springs (36) which enclose a tubular washer (42) having a convex lower end surface. Cushion assembly (30) comprises an elastomeric disc (46) with springs (48) on either side thereof and enclosing a wobble tube (54) having convex end surfaces (56, 58). The elevator car (10) is held securely to the hydraulic piston (20) but is permitted to offset slightly from the piston (20) and tilt to accommodate misalignment of elevator guide rails (14) with the hydraulic piston (20).

Abstract: A sleeve assembly for sanding, rust removing, and pit filling on a piston rod of a hydraulic cylinder or the like includes a sanding component, a rust removing component and a pit filling component. The sanding component comprises a rigid annular outer member, a resilient annular intermediate member adhesively secured to the inner surface of the outer member, and an abrasive annular inner member adhesively secured to the inner surface of the intermediate member and in interference contact with the piston rod. The rust removing component comprises an annular upper ring member composed of a rigid material and an elastomeric annular lower C-ring member having brass or bronze particles imbedded therein. The pit filling component comprises an annular upper ring member composed of a rigid material and an elastomeric annular lower C-ring member having lead particles imbedded therein. Clamp means releasably engages the members of each of the components about the piston rod.

Abstract: An apparatus is provided for continuously cleaning rust and other corrosion from elevator guide rails and for filling pits, joints and other irregular areas in the rails. A plurality of guide brackets are mounted on the car for contact with the rail. Each guide bracket includes a bushing insert for contact with surfaces of the guide rail. In one embodiment, the insert is made from an elastomeric material with particles of bronze or brass embedded therein. In a second embodiment, the insert has lead embedded therein. Where the insert has bronze or brass embedded therein, the sliding of the insert relative to the walls of the guide rails acts as an abrasive cleaner to remove rust, corrosion and dirt particles from the surface of the rails. Where the insert has lead embedded therein, contact between the insert and the rail results in the transfer of lead to the rails to fill pits, joint areas and irregularities in the rails.

Abstract: A sleeve assembly for sanding, rust removing, and pit filling on a piston rod of a hydraulic cylinder or the like includes a sanding component, a rust removing component and a pit filling component. The sanding component comprises a rigid annular outer member, a resilient annular intermediate member adhesively secured to the inner surface of the outer member, and an abrasive annular inner member adhesively secured to the inner surface of the intermediate member and in interference contact with the piston rod. The rust removing component comprises an annular upper ring member composed of a rigid material and an elastomeric annular lower C-ring member having brass or bronze particles imbedded therein. The pit filling component comprises an annular upper ring member composed of a rigid material and an elastomeric annular lower C-ring member having lead particles imbedded therein. Clamp means releasably engages the members of each of the components about the piston rod.

Abstract: A sleeve assembly for sanding a piston rod of a hydraulic cylinder or the like comprises a rigid annular outer member, a resilient annular intermediate member adhesively secured to the inner surface of the outer member, and an abrasive annular inner member adhesively secured to the inner surface of the intermediate member for interference contact with the piston rod. The sections of the annular members each have complementary nonaxial end configurations to prevent scoring of the piston rod during axial movement. Clamp means releasably engages the members around the piston rod. In some embodiments, bracket or angle bar means are utilized to releasably secure the sleeve assembly to structure at the end of the cylinder. In another embodiment, the sleeve assembly is releasably clamped directly around the end of the hydraulic cylinder.

Abstract: A packing member comprising an annular body having a circular groove extending axially thereinto through an end wall to form inner and outer sealing lips utilizes a resilient member embedded in the annular body to exert a radially directed force to a wall surface of the groove to actuate one of the sealing lips. The other sealing lip has a plurality of spaced-apart circular holes extending axially thereinto through the first end wall of the body. In one embodiment, the resilient member is a garter spring carried in a recess formed in the inner wall surface of the groove to actuate the inner sealing lip. In another embodiment, the resilient member is a curved solid rod carried in a recess formed in the outer wall surface of the groove to actuate the outer sealing lip.

Abstract: A sleeve assembly for sanding, rust removing, and pit filling on a piston rod of a hydraulic cylinder or the like includes a sanding component, a rust removing component and a pit filling component. The sanding component comprises a rigid annular outer member, a resilient annular intermediate member adhesively secured to the inner surface of the outer member, and an abrasive annular inner member adhesively secured to the inner surface of the intermediate member and in interference contact with the piston rod. The rust component comprises an annular upper ring member composed of a rigid material and an elastomeric annular lower ring member having brass or bronze particles imbedded therein. The pit filling component comprises an annular upper ring composed of a rigid material and an elastomeric annular lower ring member having lead particles imbedded therein. Clamp means releasably engages the members of each of the components about the piston rod.