Abstract: A fuel hose comprising an outer rubber layer wherein polysulfide is crosslinked so that polysulfide bonding density is not less than 4.times.10.sup.-5 mol/cm.sup.3 and an epoxy compound having epoxy equivalent at not more than 300 is contained, and an inner polyamide resin layer which is laminated on the inside face of the outer rubber layer and bonded thereon by heat treatment. Since the polyamide resin powder is melted by the heat treatment and the polysulfide bonding decomposes so that the resultant residue after decomposition combines with polyamide molecules, resulting in a direct and strong bonding of the outer rubber layer and the inner polyamide resin layer. Moreover, since the special epoxy compound is mixed therein, it is possible to set up the heat treatment condition at a rather mild one.

Abstract: A fluid-filled elastic mount wherein a fluid-tight space defined by two mounting members, an elastic body and a flexible diaphragm is divided by a partition member into pressure-receiving and equilibrium chambers communicating with each other through at least one orifice passage, and through a rotary valve which is accommodated in a valve hole in the partition member such that the rotary valve is rotatable in sliding contact with a sliding surface of the valve hole. The valve has a cutout communicating with the equilibrium chamber, and a valve portion adjacent to the valve portion, so that the orifice passage is selectively closed by the valve member and opened through the cutout in communication with the equilibrium chamber. The elastic mount includes a mechanism for converting a reciprocating movement into a rotary motion of the valve. The mechanism includes a drive rod which is connected to the valve such that the connecting point is offset from the rotation axis of the vale in the radial direction.

Abstract: A conductive roll including a conductive shaft, a conductive rubber foam layer formed on an outer circumferential surface of the conductive shaft, and a semi-conductive solid rubber layer formed on an outer circumferential surface of the conductive rubber foam layer. The conductive roll is produced by forming a cylindrical laminar body which gives the conductive rubber foam layer and semi-conductive solid rubber layer, and simultaneously vulcanizing and foaming the laminar body in a mold in which the conductive shaft is placed in position.

Abstract: An electrically conductive roll is disclosed, which includes: a center shaft; a base layer formed on an outer circumferential surface of the center shaft and including an elastic material as a major component and an ion-conductive material, the base layer having a volume resistivity of 10.sup.6 -10.sup.9 .OMEGA.cm; an electrode layer formed on an outer surface of the base layer and including a synthetic resin material as a major component and an electron-conductive material, the electrode layer having a volume resistivity of not more than 10.sup.3 .OMEGA.cm; a resistance adjusting layer formed on an outer surface of the electrode layer; and a protective layer formed on an outer surface of the resistance adjusting layer.

Abstract: A cylindrical fluid-filled damping device wherein a center shaft member and an outer cylindrical member are elastically connected by an elastic body having a first and a second annular pocket which are axially spaced apart from each other, and an intermediate sleeve secured to the outer circumferential surface of the elastic body has an axially intermediate small-diameter portion, and two first windows and two second windows which are formed on respective axially opposite sides of the small-diameter portion. The first and second annular pockets are open in the outer surface of the intermediate sleeve through the respective first and second windows. An orifice member is interposed between the axially intermediate small-diameter portion of the intermediate sleeve and the outer cylindrical member secured to the outer surface of the intermediate sleeve.

Abstract: A rod-damper combination comprising an oscillating rod member and a dynamic damper mounted on the rod member is disclosed. The dynamic damper includes a mass portion having a substantially cylindrical shape, and two elastic support members formed on axially opposite sides of the mass portion to elastically support the mass portion. The oscillating rod member includes a small-diameter portion formed at an axially middle portion thereof, and two large-diameter portions formed on axially opposite sides of the small-diameter portion. Alternatively, the rod member includes a middle portion, and two tapered portions on axially opposite sides of the middle portion. The two elastic support members of the dynamic damper are mounted on the two large-diameter or tapered portions of the oscillating rod member, respectively.

Abstract: An insulating tape or sheet comprising a polyester film layer and a polyolefin adhesive layer having a flexural modulus of 500-20000 kgf/cm.sup.2. The insulating tape or sheet of the present invention can provide an insulated wire having superior buckling resistance and is very low in cost.

Abstract: A resin hose connecting structure includes a resin hose including a hose body and a connecting portion formed coaxially and integrally with an end portion of the hose body and having an inserting inner peripheral surface, and a mating member made of structural material having a tubular inserting end portion for inserting into the connecting portion of the resin hose. The tubular inserting end portion includes a ring-shaped contacting surface and an inserting outer peripheral surface. In the hose body, at least the end portion is made of hard thermoplastic resin and is molded by a blow molding method. The connecting portion is made of soft thermoplastic resin and is molded by an injection molding method.

Abstract: A tube fitting includes a tubular body, an annular clamping member, a tubular inner pipe, a releasing member, and a sealing ring. The clamping member is disposed axially movably in an axial bore of the body, and includes a claw and an outer peripheral portion. The claw has an inclined surface projecting in a centripetal direction as the inclined surface extends away from an opening of the body, and engages with an outer peripheral surface of a tube fitted into the axial bore via the opening. The outer peripheral portion contacts with a regulatory surface of the body, and is pressed in a centripetal direction thereby, and accordingly presses the claw onto the outer peripheral surface of the tube. The inner pipe is disposed in the tube coaxially with an inner peripheral surface of the tube at an end of the tube. The releasing member includes a tubular base and a leading end. The base is disposed axially movably in the axial bore on an outer side with respect to the regulatory surface.

Abstract: A fluid-filled cylindrical elastic mount having an inner sleeve and an outer sleeve, and an elastic body interposed therebetween. The elastic mount also has a primary fluid chamber adapted to undergo pressure changes upon application of a vibrational load to the mount, and a first and a second auxiliary fluid chamber partially defined by a first and a second flexible diaphragm, respectively. The second flexible diaphragm has a greater stiffness than the first flexible diaphragm. A non-compressible fluid flows between the primary and first auxiliary fluid chambers, through a first orifice passage tuned to a first frequency range, and a second orifice passage tuned to a second frequency range that is higher than the first frequency range. The fluid also flows between the primary and second auxiliary fluid chambers, through a third orifice passage tuned to a third frequency range that is higher than the second frequency range.

Abstract: The present invention is related to a rubber vibration insulator comprising a rubber composition for a rubber insulator wherein at least one selected from unsaturated fatty acid amide and N-substituted fatty acid amide is contained. For this reason, friction coefficient can be greatly reduced in wide temperature range including low temperature range and high temperature range, not in a narrow temperature range near to a normal temperature. Furthermore, the above unsaturated fatty acid amide can be easily melted in a rubber compound so as to be mixed into a normal kneading operation resulting in a superior workability.

Abstract: A fluid-filled cylindrical elastic mount which includes radially spaced-apart inner and outer sleeves, and an elastic body interposed between the inner and outer sleeves for elastical connection thereof. The elastic body has diametrically opposite fluid chambers containing a highly viscous fluid, and at least one fluid passage which communicates with the fluid chambers. The outer sleeve has at least one inlet through which the highly viscous fluid is injected into the mount. Each of the inlets is formed in a portion of the outer sleeve which defines the corresponding fluid passage, and is closed by a sealing member fixed to the outer sleeve. The elastic mount further includes a pair of restricting protrusions which are respectively formed in the fluid chambers to protrude from the inner sleeve toward the outer sleeve in radially opposite directions, such that each protrusion has a radial end face which cooperates with the outer sleeve to define a restricted portion which has a predetermined radial dimension.

Abstract: A sliding type coupling device is disclosed which includes: an inner member having a sliding contact portion; a cylindrical outer member which receives therein the sliding contact portion; and a slidable member made of synthetic resin and attached to an inner surface of the outer member. The sliding contact portion of the inner member is slidably supported by an inner circumferential surface of the slidable member. The coupling device further includes a substantially annular retainer ring disposed in engagement with a circumferential groove formed in an inner surface of the outer member. The retainer ring abuts on one axial end of the slidable member, so as to limit an axial displacement of the slidable member. The slidable member includes a gap-filing portion which intrudes into the groove and fills a gap between an inner wall of the groove and the retainer ring. Also disclosed is a method of producing such a sliding type coupling device.

Abstract: A method for producing a multi-layered hose by electrostatically applying a thin resin layer on the inner surface of a tubular rubber outer layer. The resin can be applied by spraying resin powder from a bar nozzle inserted into an opening of the tubular outer layer, and the applied resin can be heated by an induction or dielectric heating source placed inside the tubular outer layer. The resin can be applied only to the hose body portion and not to edge portions which are to be attached to mating pipes, or a thinner layer of resin can be applied on the edge portions than on the body portion. An intermediate layer containing dielectric material or at least one of electrically conductive and magnetic material can be formed between the tubular outer layer and resin inner layer.

Abstract: A crowned resilient roll whose diameter is continuously increased from axially opposite ends of the roll toward an axially middle point thereof is disclosed. The resilient roll includes a columnar roll body formed of a resilient material, and a coating layer formed on an outer circumferential surface of the roll body. The thickness of the coating layer is varied in an axial direction of the roll body, such that the coating layer has the largest thickness at an axially middle point of the roll body, and such that the thickness is gradually reduced from the middle point toward axially opposite ends of the roll body. Also disclosed is a method of making such a crowned resilient roll having a coating layer of varying thickness.

Abstract: A method of producing a bent resin tube by heating a certain portion of a straight resin tube to be bent partially by a partial bending means, and bending the heated certain portion partially by a partial bending die, thereby rendering a desired bend shape to the tube. In this method, a large die for constraining the shape of the whose tube or a large oven is not required. Therefore, space for equipment can be reduced, and production efficiency is enhanced because the time required for bending operations is decreased remarkably. The heating may be done by high frequency induction heating, high frequency dielectric heating, or other conventional heating.

Abstract: A vibration damping support apparatus for a power unit of an automobile is disclosed which includes: an oscillating device disposed between a vehicle body and the power unit, for oscillating the power unit with respect to the vehicle body; a first sensor attached to the power unit, for detecting vibration of the power unit; a second sensor attached to a member of a vehicle suspension system, for detecting vibration of the suspension member which is displaced relative to the vehicle body in response to movements of vehicle wheels; a third sensor attached to a monitoring point on the vehicle body, for detecting vibration of the vehicle body at the monitoring point; and a control device for controlling the oscillating device, based on a first reference signal and a second reference signal received from the first and second sensors, respectively, and an error signal received from the third sensor, the control device performing an adaptive control so that the error signal is minimized.

Abstract: A sliding type coupling device is disclosed which includes: an inner member having a sliding contact portion; a cylindrical outer member which receives therein the sliding contact portion; and a slidable member made of synthetic resin and attached to an inner surface of the outer member. The sliding contact portion of the inner member is slidably supported by an inner circumferential surface of the slidable member. The coupling device further includes a substantially annular retainer ring disposed in engagement with a circumferential groove formed in an inner surface of the outer member. The retainer ring abuts on one axial end of the slidable member, so as to limit an axial displacement of the slidable member. The slidable member includes a gap-filing portion which intrudes into the groove and fills a gap between an inner wall of the groove and the retainer ring.

Abstract: A flexible joint for an exhaust pipe of a motor vehicle which includes: a cylindrical inner layer which consists of a cloth made of ceramic fibers, the inner layer being expansible in an axial direction thereof; an intermediate layer formed of a heat insulating material, for covering an outer circumferential surface of the inner layer; and a cylindrical outer layer disposed radially outwardly of the intermediate layer and formed of an elastic material.

Abstract: A fluid-filled elastic mount including an elastic body which elastically connects inner and outer support members and partially defines a fluid chamber, an oscillating plate partially defining the fluid chamber and supported by the inner support member, and an electromagnetic drive device having an inner yoke member fixed to the oscillating plate, an annular outer yoke member fixed to the outer support member, a moving permanent magnet fixed to the inner yoke member and cooperating with the yoke members to define a closed magnetic circuit, and an annular stationary coil which is disposed in an annular magnetic gap in the closed magnetic circuit and which is fixed to the outer yoke member, so that the moving permanent magnet is displaced together with the inner yoke member to thereby oscillate the oscillating plate upon energization of the annular stationary coil, while heat generated by the coil is dissipated through the outer yoke.