Abstract: A tensioning device for a cable inserted through a flexible tube, in which the flexible tube is fixed at one end to a stationary member, and the cable is connected to a movable member relative to the stationary member. The tensioning device includes a socket fixed to the stationary member, a plug provided on the other end of the flexible tube, a resilient member and locking means. The socket has a space therein. In the space, the plug supports the flexible tube so as to be movable in an axial direction of the cable, and the resilient member presses the plug toward the end of the space of the socket. The locking means fastens the plug in a position where the resilient member is compressed.

Abstract: Only a left lock mechanism is coupled directly to an operation bar of comparatively high rigidity and a right lock mechanism is coupled to the left lock mechanism via a wire as a coupling member. The operation bar is rotatably supported at left and right end parts in left and right upper rails. The right end part is rotatably supported in a support pin of a bracket attached to the right upper rail slidably from side to side. A guide hole fitted slidably to an end part of an operation bar is made in a link for coupling the left lock mechanism and the end of the operation bar. A ring bushing made of a resin as a buffer member is fitted into the guide hole and is formed with an opposed face part opposed to the end part of the operation bar and an elastic piece pressed against the upper face of the operation bar.

Abstract: An automotive power seat sliding device comprises first and second lower rails secured to a vehicle floor; first and second upper rails slidably and respectively engaged with the first and second lower rails and supporting thereon a seat; a cross beam member having both ends secured to the first and second upper rails respectively, so that the first and second upper rails slide on and along the first and second lower rails like a single unit; a drive shaft extending along the first upper rail and having a spiral groove formed therearound; a nut member secured to the first lower rail and operatively engaged with the drive shaft; an electric power unit supported by the cross beam member for rotating the drive shaft about an axis thereof; a supporting member connected to the first upper rail for rotatably supporting one end portion of the drive shaft; and a protector bracket secured to the first upper rail and having a recessed structure into which the other end of the drive shaft is received without contacting

Abstract: A biasing structure for biasing a locking pawl-equipped operation rod in a given direction is described. A slit is formed in a rear end of the operation rod. A spring retainer is integrally provided by a bracket through which the operation rod is rotatably connected to a movable rail. The spring retainer includes a rearwardly projected portion whose one surface faces toward a rear end portion of the operation rod and a recess which is formed in a base part of the projected portion and faces toward the rear end portion of the operation rod. A coil spring includes a multi-turned major portion, a front straight portion tangentially extending from a front end of the major portion and a rear straight portion extending radially inward from a rear end of the major portion.

Abstract: A rail unit comprises a fixed rail, a movable rail slidably engaged with the fixed rail and a locking mechanism for locking the movable rail relative to the fixed rail. In order to increase a mechanical strength of a given part of lower flanges of the movable rail where locking openings for the locking mechanism are formed, the given part is integrally formed at an upper end thereof with a raised portion, or the lower flanges of the movable rail are formed at mutually mating portions with depressed portions. When the movable rail and the fixed rail are subjected to a mutually pulled apart movement upon a vehicle collision of the like, the raised portion or the depression portions are brought into abutment with an inner surface of the fixed rail to suppress or at least minimize deformation of the rail unit.

Abstract: A process for polymerizing ethylene under the high temperature and high pressure conditions by using a battery of two or more autoclave reactors connected in series by means of piping provided with a heat exchanger, each of said reactors having an upper reaction zone and a lower reaction zone. According to this process, the reaction yield of polyethylene is higher than that attainable from the conventional two-zone polymerization methods, and the obtained polyethylene is improved in optical properties and processability.

Abstract: In a process for polymerizing ethylene in a two-zone autoclave reactor comprising a top reaction zone and a bottom reaction zone which process comprises polymerizing ethylene in said top reaction zone at 130.degree. to 200.degree. C and at a reaction pressure of 1,000 to 1,800 kg/cm.sup.2 using an initiator, sending the resulting reaction mixture from the top reaction zone to the bottom reaction zone, and further promoting the polymerization at 220.degree. to 280.degree. C using an initiator which is same as or different from the initiator in the top reaction zone, the improvement which comprises feeding 75% or more of the ethylene to the top reaction zone of the two-zone reactor, said two-zone reactor being constructed so that the volume ratio of top reaction zone to bottom reaction zone is 1.5 to 6 and being provided with two or more feed inlets for each of the ethylene and the initiator in the top reaction zone in the direction extending through the two reaction zones.

Abstract: A polyolefin composition having high adhesive strength comprising a reaction product of (1) a crystalline polyolefin, (2) at least one compound selected from the group consisting of unsaturated aliphatic carboxylic acids and anhydrides thereof and (3) magnesium oxide, and a process for preparing the polyolefin composition are disclosed.