Abstract: A method of joining end portions of a weatherstrip consists of introducing the end portions to openings in a mold such that a seal portion of the weatherstrip is compressed substantially to the shape of a seal lip of the seal portion. The end portions are separated in the mold by a predetermined gap and a rubber material is injected into the gap for mutually bonding the end portions of the weatherstrip. Such a method of joining allows the weatherstrip to be installed on complexly shaped openings with no degradation of sealing characteristics over the perimeter covered by the weatherstrip. A molding apparatus for joining said end portions includes a clamping member for assuring correct positioning of a sealing edge of the weatherstrip.

Abstract: A method for forming a weatherstrip includes extruding a compound formed of 1-10 weight of polyglycidyl methacrylate having an epoxy group in the molecular structure thereof added per 100 parts of a rubber compound formed of SBR/EPDM. As the compound is extruded from the extruder, a urethane coating material is supplied to a nozzle to accomplish coating of an article concurrently with forming thereof. The extruded article is then vulcanized to assure good sealability.

Abstract: A bending processing apparatus includes upper and lower molds made of a flexible synthetic resin material which are interposed between end surfaces of a plurality of driven cylinders opposing a corresponding plurality of movable cylinders. This arrangement is mounted on a base stand and an article to be subjected to bending processing is supported by pressure between the upper and lower molds. A control unit is provided for controlling a stroke amount, stroke order and speed of the respective cylinders such that pressing force may be uniformly obtained during bending processing, thus wrinkling or finding in the article during processing is prevented.

Abstract: A method of producing a weatherstrip for an automotive vehicle is included. This weatherstrip includes generally a sliding seal portion for sealing between a vehicle body and a window glass and a weatherstrip base portion for bordering an open edge of the vehicle body. The sliding seal portion is made of rubber material with which lubricant is blended so that the lubricant bleeds out of an outer surface of the sliding seal portion with use for providing low friction against sliding movement of the window glass. The weatherstrip base portion is made of conventional rubber material including no lubricant and is one-piece molded with the sliding seal member by extrusion molding.

Abstract: A control system for automatically controlling a continuous vulcanization line for manufacturing sponge rubber products, which includes a sensor for monitoring an outside dimension of a sponge rubber product produced by the continuous vulcanization line, a discriminating circuit for determining whether the monitored outside dimension is within a predetermined criterion defined by designated upper and lower limits of an acceptable rubber product, an arithmetic circuit for deriving an offset amount of the outside dimension, offsetting from the criterion, and a control circuit for controlling an output power of microwave generated by a microwave vulcanizer employed in a primary heating system for pre-foaming a sponge rubber material, depending on the offset amount of the outside dimension.

Abstract: A control system for automatically controlling a continuous vulcanization line for manufacturing sponge rubber products, includes a sensor for monitoring an outside dimension of a sponge rubber product produced by the continuous vulcanization line, a discriminating circuit for determining whether the monitored outside dimension is within a predetermined criterion defined by designated upper and lower limits of an acceptable rubber product, an arithmetic circuit for deriving an offset amount of the outside dimension, offsetting from the criterion, and a control circuit for controlling an output power of microwave generated by a microwave vulcanizer employed in a primary heating system for pre-foaming a sponge rubber material, depending on the offset amount of the outside dimension.

Abstract: A device producing a weather strip is shown, which includes (a) leading a first uncured pasty material into a certain shaping passage to produce an uncured shaped molded strap; (b) applying continuously a second uncured pasty material onto a given portion of the uncured shaped molded strap while the latter is being moved in the certain shaping passage thereby to produce a layered uncured shaped molded strap; and (c) curing the layered uncured shaped molded strap.

Abstract: A structure for a bushing disposed between inner and outer cylindrical members arranged concentrically to each other, comprises an elastical member fitted into the inner periphery of the outer cylindrical member, a substantially cylindrical slidable member disposed between the inner cylindrical member and the elastical member, and a projecting lip portion formed on at least one of the outer circumferential surface of the inner cylindrical member and the inner circumferential surface of the slidable member, such that the projecting portion keeps in contact with the opposing circumferential surface with a small contact area and defines a slight aperture between the outer periphery of the inner cylindrical member and the inner periphery of the slidable member.

Abstract: A dust seal for a sliding type bush is interposed between a stationary section and a movable section. The dust seal has a fitting portion fitted to the stationary section, a seal lip portion in sliding contact with the outer circumferential surface of the movable section and a flexible portion interconnecting the fitting portion and the seal lip portion. The dust seal is further provided with an annular projection held in contact with a flange and the outer circumferential surface of the movable section. The seal lip portion is held axially stationarily relative to the movable section.

Abstract: A fluid-filled power unit mount device consists of a mount rubber securely interposed between two base plates. A partition plate is securely connected to one of the base plate so as to define fluid and auxiliary chambers on the opposite sides thereof. The partition plate is formed with an orifice to provide fluid communication between the fluid and auxiliary chambers, and provided with two parallely arranged movable mechanisms each having a movable member. The movable member is movable under small amplitude high frequency vibration causing booming noise, but restrained from its movement under large amplitude low frequency vibration, thereby effectively damping even vibration which is slightly higher in frequency than the booming noise generating high frequency vibration.

Abstract: A fluid-containing power unit mounting device capable of effectively damping vibration in a wide range of frequency is shown. The damping function of the device is accomplished by a mounting rubber forming an internal fluid-containing chamber between a power unit and a chassis, a partition plate dividing the chamber and including a plurality of valve mechansims in series and an orifice communicating between both sides of the chamber.