Abstract: Chlorine-containing polyethylene- and polyether-based elastomer compositions having excellent heat resistance and chemical resistance, which are heat stabilized with from about 1 to about 25 parts per hundred weight of the elastomer of barium sulfate, and high temperature and chemical resistant molded and extruded products including automotive hose and cable jacketing incorporating such elastomer compositions.

Abstract: Polyfluorocarbon/elastomer bonded laminates are disclosed. Flexible, durable chemical-resistant hose for use in industrial applications, and improved construction for such hose including inner tube members characterized by a dual-layer feature employing such laminate, is also disclosed. This feature comprises an adhesive elastomeric composition which bonds a polyfluorocarbon thermoplastic veneer to a substantially non-polar chemical-resistant carbon-based elastomeric or thermoplastic elastomeric outer layer. The adhesive elastomeric composition useful in the present invention comprises unsaturated polymeric dicarboxylic acids, or derivative adducts, of ethylene propylene diene terpolymer.

Abstract: Elastomeric compositions for incorporation in articles subject to dynamic loading, comprising an ethylene-alpha-olefin elastomer which is reinforced with a filler and a metal salt of an .alpha.-.beta.-unsaturated organic acid. This composition is cured using a free-radical promoting material. The invention includes articles subject to dynamic loading incorporating these elastomeric compositions, and belting, including power transmission and flat belting incorporating as their main belt body portions these elastomeric compositions.

Abstract: A twin screw extruder for mixing carbon black with rubber and with a first mixing zone with screw elements for heating rubber to about 130.degree.-220.degree. C., and a second port for adding carbon black and a third port for adding oil.

Abstract: A tensioner with a pivot-arm that is free to move toward a belt of a belt drive system to tighten the belt and is also free to move away from the belt a predetermined amount to slacken the belt and adjust belt tension while avoiding tooth jump in extreme torque reversal situations. An adjustable stop is provided to restrict movement of the pivot-arm and inhibit tooth jump as the tensioner pulley moves to slacken the belt.

Abstract: The invention is an improved hose clamp of the type formed of a band of heat shrinkable polymer having a diameter reducing released temperature, an inside band surface and an outside band surface. It is improved by the inclusion of a heating indicator.

Abstract: A method of making a moldable, nonwoven composite material. The method includes blending a mix of first fibers and second thermoplastic fibers. The second fibers have a melting point lower than that of the first fibers and comprise approximately 40-80 percent of the blend. The blend is then processed into a fibrous batt. The batt is then consolidated into a nonwoven structure with the first fibers being thoroughly intermixed with the second fibers. The nonwoven structure is then heated to a temperature below the melting point of the first fibers and above the melting point of the second thermoplastic fibers to substantially liquefy the second fibers and form a thermoplastic resin. The heated nonwoven structure is compressed to flow the liquefied resin to displace air voids in the nonwoven structure and encapsulate the first fibers. Finally, the nonwoven structure is cooled to form a composite material having substantially reduced air voids therein with the first fibers thoroughly encapsulated by the resin.

Abstract: A twin screw extruder and torque splitting transmission has two output shaft portions that are axially spaced apart a distance and are connected to elongate shafts where at least one is bent along its length and powered by a driven pinion gear that has a diameter that is greater than the distance between the axes of the twin screws.

Abstract: A belt tensioner type with a pivot-arm pivotally mounted a cocave arcuate bushing supported by a base, a pulley rotatably mounted to the pivot-arm, and a spring between the pivot-arm and base biasing the position of the pivot-arm and wherein the arcuate bushing provides bearing support and damping to pivoted movements of the pivot-arm.

Abstract: A process is provided for producing elastomeric compositions by forming a mixture of polymeric material, a reinforcing agent, a processing aid and a vulcanizing agent. The process of the invention is continuous and includes the repeated, sequential steps of admixing the polymeric material along a first mixing zone defined by a space wherein the gross energy applied induces a first operating temperature range. The mixture of the first zone is continuously passed into and through a second mixing zone while adding and admixing the reinforcement agent and processing aid therewith, the second mixing zone being defined by a space wherein the gross energy applied induces a second operating temperature range. The mixture of the second zone is then continuously passed into and through a third mixing zone while adding and admixing the vulcanizing agent therewith, the third mixing zone being defined by a space wherein the gross energy applied induces a third operating temperature range.

Abstract: A spring bias tensioner of the eccentric type with a fixed cam ring and rotatable cam ring activated by a torsion spring wherein the cam rings generate an axially force to engage radial friction sliding surfaces to affect damping as a pivot arm of the tensioner is moved.

Abstract: A toothed belt with a plurality of teeth along one surface of the belt which surface includes a peripheral wear-resistant fabric that is double woven with two sets of warp yarns and two sets of weft yarns that are tied together in a single layer.

Abstract: A coupling member of the type having a generally tubular body portion with a recessed annular element having a sealing surface portion, a swivel nut attached to the body portion and wherein the swivel nut has a concave frustoconical surface for engaging a second coupling member.

Abstract: An endless power transmission belt has an elastomeric body portion, load carrying members embedded in the body portion, and a power transmitting surface integral with the body portion. The elastomeric body portion further includes material to mitigate unstable frictional behavior of the body portion responsible for initiating self-excited vibration at the power-transmitting surface.

Abstract: A ferrule for attaching a hose end portion to a male-stem, the ferrule having a tubular socket portion that retains a bendable sleevelike insert having substantially a C-shape when viewed in cross-section. Oppositely facing circumjacent edges of the C-shaped insert may have teeth as a means for interdigitating with each other when the ferrule is used to couple hose.

Abstract: A tensioner of the eccentric type with a pivot-pin and pivot bushing disposed within the confines of an inside diameter of a bearing member attached to a stub shaft, the shaft having an axially oriented groove that receives the pivot bushing. A tensioner where the pivot bushing has a wall thickness sized to receive a load from the pivot-pin and where such thickness is greater than a radial dimension between the pivot-pin and a circumference for the stub shaft.

Abstract: A flexible boot of the polymeric type for use with a universal joint where the boot has a radially outermost generally tubular wall section that interconnects to the boot body by oppositely facing peaks and valleys. The thickness of the boot sidewall is controlled to effect desire bending where, in one embodiment, peaks and valleys are thicker than an adjoining sidewall of a corrugation.

Abstract: A support assembly, including an end plate, for use in metal gas cells. The support assembly inhibits a plate stack which is positioned within a pressure vessel from impinging the walls of the pressure vessel. The support assembly comprises a first and a second weld ring and a first and a second end plate, each of the end plates being attached to a different end of the plate stack. The first and second weld rings mate with the first and second end plates, respectively, and cooperate to support the plate stack. The end plate comprises two plates secured together. A raised portion on one of the plates forming the end plate has a radially extending embossment formed therein to increase the rigidity thereof. The pressure vessel is constructed of generally cylindrical container defining two circumferentially extending lips, each of which is secured to an end portion.

Abstract: An electrode for a rechargeable electrochemical cell including an electrically conductive substrate, a layer of an electrochemically active material attached to the substrate, the active material comprising a reducible species of a metal, at least one conductive contact area formed of a metallic form of said metal attached to said substrate, said metallic contact area comprising said reducible species in a converted form. A positive electrode is further provided wherein said active material is nickel hydroxide and said metallic form of said metal is nickel metal. The invention further comprises the method for manufacturing electrodes as described above, featuring use of reducing gas to effect conversion.

Abstract: A metal hydride negative electrode plate for use in an alkaline electrochemical cell is disclosed including a conductive substrate carrier, a layer of electrochemically active hydrogen storage alloy material capable of reversibly storing hydrogen attached to the carrier, and the presence of a layer of carbon particles affixed to the outer surface of the active material layer. The carbon particle layer is present as a uniform distribution on the surface of the active material layer and prevents substantial oxidation of the active hydrogen storage alloy material during charge and overcharge of an alkaline cell incorporating the carbon coated metal hydride negative electrode of the invention.