Abstract: The present invention relates to a pneumatic tire having a rubber component comprised of (a) 100 parts by weight of at least one elastomer containing olefinic unsaturation; and (b) 1 to 20 phr of a liquid organic polysulfide polymer having a molecular weight of from 500 to 10,000.

Abstract: The invention relates to the preparation of a partially vulcanized, pre-shaped rubber composition and use thereof as a component of an article of manufacture. In practice, the partially vulcanized rubber composition is adhered to an unvulcanized rubber substrate to form a composite thereof and the resulting composite vulcanized to create an article of manufacture. Such pre-vulcanized rubber composition is a composite comprised of at least one diene-based elastomer, amorphous silica, coupling agent and liquid diene-based polymer. Such partially vulcanized, pre-shaped rubber composition may be a component of a tire such as, for example, an apex, sidewall insert or tread. It may also be a component of an industrial rubber product such as, for example, a component of a conveyor belt, power transmission belt or a hose.

Abstract: A composite structural element comprises a steel structural shape whose web is provided with one or more steel plates secured thereto by welding or bolting and embedded in the concrete filling the channels between its flanges. The concrete may also include a reinforcement secured to the plate. With a relatively simple structure the system has increased load-carrying capacity even under fire conditions.

Abstract: A composite structural element has a main steel beam having a web and at least two flanges extending therefrom, having oppositely directed outer faces, having outer edges generally defining a plane and defining with the web a recess open away from the web between the outer edges. A mass of concrete fills the recess substantially to the plane, the outer flange faces being exposed and substantially free of concrete. Another profiled steel beam is fixed to the web of the main beam and wholly imbedded in and covered by the concrete mass. Typically the main beam is an H- or I-beam and has two such channels provided with such other beams and filled with respective such masses. The other beams can be of T-section or each other beam can be an I- or H-beam. In addition it is possible to provide longitudinally extending steel reinforcing bars imbedded in the concrete mass. Steel fibers can also be imbedded as reinforcement in the concrete mass, and this mass can be at least partially of colloid concrete.