Abstract: Chlorinated ethylene-.alpha.-olefin copolymer rubber of the present invention is characterized in that the content of chlorine bonded to primary carbon atom is 0.6 % by weight or more and the content of chlorine bonded to tertiary carbon atom is 1.6 % by weight or less. This chlorinated ethylene-.alpha.-olefin copolymer rubber has a high vulcanization speed and excels in heat resistance. Additionally, this thermoplastic elastomer composition consisting of this vulcanizate and crystalline polyolefin resin particularly excels in moldability and processibility.

Abstract: Disclosed is a semiconductive rubber foam having a volume resistivity that can be controlled to a practical level and retaining an initial softness (hardness) even after the lapse of time. This semiconductor rubber foam is composed of a molded article obtained by curing and foaming a rubber composition comprising (A) 100 parts by weight of a chlorinated ethylene/.alpha.-olefin copolymer rubber and (B) 10 to 50 parts by weight of carbon black. The volume resistivity of this semiconductive rubber foam has is in the range of from 10.sup.5 to 10.sup.11 .OMEGA.-cm.

Abstract: In a robot arm for use in converting rotary motion of a rotatable axle located within a main post into linear motion of a chuck arm, a first arm unit is fixed to the rotatable axle while a first gear is fixed to the main post so that the first gear is rotated relative to the first arm unit with rotation of the rotatable axle. Rotation of the first arm unit is transmitted through a first power transmission element to a second gear which is rotatably supported on a first fixed axle. A second arm unit is fixed to the second gear while a third gear is fixed to the first fixed axle so that the third gear is rotated relative to the second arm unit. Relative rotation of the third gear is transmitted via a second power transmission element to a fourth gear fixed to the chuck arm.

Abstract: Disclosed are vulcanized rubber articles of foamed type and non-foamed type which are prepared by vulcanizing a vulcanizable and foamable (or a vulcanizable) molded product made of a chlorinated ethylene/.alpha.-olefin copolymer rubber, chlorinated polyethylene or chlorosulfonated polyethylene, said vulcanizable and foamable (or vulcanizable) molded product having been surface-treated with a coating solution containing at least one compound selected from alkylammonium halide, alkylphosphonium halide, amine having an acid dissociation constant (pKa) of not less than 10 and amine salt having an acid dissociation constant (pKa) of not less than 10. Also disclosed are processes for the preparation of the vulcanized rubber articles of foamed type and non-foamed type.

Abstract: A vulcanizable rubber composition containing (i) (A) a chlorine-containing rubber and (B) a triazinethiol.amine salt or (ii) (a) a chlorine-containing rubber, (b) a triazinethiol as a vulcanization agent, and (c), as a vulcanization agent, (c-1) an aromatic carboxylic acid amine salt, (c-2) an aliphatic carboxylic acid amine salt, and (c-3) a phenolamine salt.

Abstract: PCM 24 channel digital voice information received from an incoming trunk are sequentially stored in a speech data memory device for respective channels through an input buffer memory device. The addressed content of the speech data memory device is read out by a control signal which has been stored in a control memory device and adapted to designate an address of the speech data memory device from which information is to be read out, and the read out information is sent to an outgoing trunk through an output buffer memory device thereby operating channel translation. The channel assigned to the outgoing trunk is different from that assigned to the incoming trunk. The speech data memory device, the control memory device and the program memory device are constituted by one memory means and the exchange of signals between the memory means and the input/output buffer memory devices as well as an arithmetic operation unit is effected by a programmed control of a program memory device.