Abstract: A bellows type air spring having a circular lobed body member with an inner an outer rubberized fabric reinforcing ply and a bead ring at each end. The turn up portion at each end of the fabric layers is wrapped around the bead ring with the turn up portion of the inner ply extending axially inwardly from the bead ring a substantial distance beyond the end of the turn up portion of the outer ply on both ends of the spring to provide longer flex life and prevent premature cracking of the body member in the areas of the end bead rings. The manufacturing method involves the use of an inner fabric ply that is substantially longer in the axial direction than the outer ply instead of using both inner plies of the same axial length.

Abstract: An engine mount for motor vehicles having two enclosed chambers containing hydraulic fluid, which chambers are separated from each other by a partition containing a damping channel passing therethrough to permit hydraulic fluid to flow back and forth between the chambers to damp vibrations imparted to the mount. The engine mount is equipped with a decoupling unit within one of the hydraulic chambers for coupling and decoupling the damping action of the mount in response to varying driving conditions and engine performance. The decoupling unit has a rigid member forming a cavity into which a flexible diaphragm is deflected when vibrations occur when the decoupling unit is set in a decoupling mode to prevent fluid from being pumped back and forth through the damping channel.

Abstract: There is disclosed an improved method for open steam curing of mineral-loaded elastomers. It has been discovered that use of a vulcanization agent comprising a mixture of an alkyl phenol disulfide and a guanidine compound provides a synergistic curing system that is superior over the use of either component alone. The improved curing system of the present invention is particularly suited for the open steam curing of mineral-loaded chlorobutyl compounds. The cure system may be used in addition to zinc oxide and results in excellent states of cure as determined by tensile elongation and hardness measurements.

Abstract: There is disclosed an improved method for open steam curing of mineral-loaded elastomers. It has been discovered that use of a vulcanization agent comprising a mixture of an alkyl phenol disulfide and a guanidine compound provides a synergistic curing system that is superior over the use of either component alone. The improved curing system of the present invention is particularly suited for the open steam curing of mineral-loaded chlorobutyl compounds. The cure system may be used in addition to zinc oxide and results in excellent states of cure as determined by tensile elongation and hardness measurements.

Abstract: There is disclosed an improved method for open steam curing of mineral-loaded elastomers. It has been discovered that use of a vulcanization agent comprising a mixture of an alkyl phenol disulfide and a guanidine compound provides a synergistic curing system that is superior over the use of either component alone. The improved curing system of the present invention is particularly suited for the open steam curing of mineral-loaded chlorobutyl compounds. The cure system may be used in addition to zinc oxide and results in excellent states of cure as determined by tensile elongation and hardness measurements.

Abstract: A method of manufacturing a closed, hollow toroidal structure having a rigid internal annular plate includes treating one annular surface of the plate with a release coating, applying to the other annular surface of the plate an adhesion promoting coating and positioning the plate within a mold having a generally toroidal internal cavity. Next, a fluid conduit is juxtaposed partially within the internal cavity of the mold adjacent to the annular plate and partially outside the internal cavity of the mold. The mold cavity is then filled with an elastomer followed by curing under heat and pressure.

Abstract: This invention is a fluid actuator of the rolling lobe form in which a closed toroidal flexible membrane forms concentric rolling lobes on the inside and outside surfaces of an annular piston which moves axially into the membrane. The fluid actuator can be used in brake and clutch assemblies where the actuator is connected to a high pressure fluid source and serves to activate the brake or clutch assembly, a shaft or axle can pass through the center of the toroid.

Abstract: This invention relates to an annular actuator (10) employing a closed toroidal elastomeric diaphragm (12) including in its interior a flat annular plate (14) adhered on one flat side (18) thereof to the interior peripheral surface (22) of the diaphragm (12). A shaft (114) or support may exit through a central passageway (16) in the center of the diaphragm. Hydraulic fluid is introduced into the actuator (10) to actuate the clutch (80) mechanism as a substitute for a hydraulic cylinder.

Abstract: This invention relates to a process of producing a cured foamed polymer by mechanically frothing a radiation-curable composition and curing the frothed composition with radiation and using such foams in graphic art devices such as compressible printing blankets. It also relates to uses of unfoamed radiation-cured polymer in graphic art devices.

Abstract: This invention relates to a process of producing a cured foamed polymer by mechanically frothing a radiation-curable composition and curing the frothed composition with radiation and using such foams in graphic art devices such as compressible printing blankets. It also relates to uses of unfoamed radiation-cured polymer in graphic art devices.

Abstract: A hose structure of simplified construction suitable for rigorous high pressure applications such as rotary well-drilling apparatus is described. The hose includes a heavy-walled tube of elastomeric material having a measured stress of at least 600 psi at 20 percent elongation, an elongation at rupture of at least 150 percent and a Young's modulus of at least 2000 psi. The formulation of the tube material includes a reactive resin system capable of polymerizing in situ.

Abstract: This invention is concerned with a hose construction particularly suitable for Freon service in refrigeration systems. The hose comprises (1) a core tube of polyamide covered by an elastomeric friction layer such as EPDM rubber having incorporated therein a calcium ion source and an adhesion system and a curative, (2) a layer of tensioned reinforcement strands, (3) an adhesive/barrier/friction layer such as an ethylene acrylic acid copolymer, (4) a second layer of tensioned reinforcement strands, and (5) a cover selected from chlorobutyl rubber or other suitable materials wherein the chlorobutyl rubber utilizes a bis-dienophile as a crosslinker.

Abstract: An inflatable packer assembly having an inflatable bladder having reinforcing means where the steel wires are arranged as a series of parallel inline cables positioning within the bladder and their ends are anchored in an upper and a lower shoe means and is embedded in elastomeric compounds having preferably special physicals and a cover of a tough elastomer.