Abstract: An elastic rail bearing for railroad rails includes a top plate, a bottom plate, and a rubber plate disposed inbetween the top and bottom plates, the plates each having a plurality of holes formed therethrough with the holes of one plate being in registered alignment with the holes of the other plates. One or more bolts are provided, each of which is surrounded by a rubber ring with each of the bolts passing through one of the aligned set of holes in the top, bottom and rubber plates and engaging a nut such that an adjustable and variable initial stress may be established in the rail. At least one of the rubber plates, and the top and bottom plates, have a protrusion and the other has a corresponding recess for receiving the protrusion. The top and bottom plates each have a vertical flange which are spaced apart from, extend parallel to, and partially overlap each other. A connecting rubber strip is disposed inbetween the flanges.

Abstract: A sealing profile made of rubber or a rubber-like material for sealing tunnel segments provided with peripherally extending recesses. The profile includes grooves extending parallel to each other on the base side in the longitudinal direction, angled lateral sides, and plane-surfaced top and base surfaces. Ducts extend in the longitudinal direction within the profile and are arranged in a plurality of rows. The ducts have an approximately equal spacing between each other both within each row and from one row to another.

Abstract: A T-shaped hose includes a vulcanized main hose having a wall with an opening therein and a vulcanized branch hose having one end disposed adjacent to the opening in the main hose, so that the hoses are approximately in the form of a "T". A hollow generally cylindrical branch sleeve having a generally outwardly directed flange at its lower end and an annular recess formed in the outer wall of the sleeve adjacent to the flange, is disposed primarily within the branch hose with the flange engaging the inner wall of the main hose and defining therebetween an annular channel. A fixation member composed of a vulcanizable rubber is received with the recess and channel.

Abstract: The invention relates to a T-shaped hose composed of three branches made of rubber or similar material with a fabric lining. The three branches are arranged in the form of a "T", but are spaced apart from one another so as to define an uninterrupted, circumferentially-extending gap therebetween. The gap is then closed by a separate rubber compound. A non-adhering T-shaped tubular support made of rigid and thermally stable material is arranged in the interior of the hose within the T-zone, while the exterior T-zone of the hose is covered by a rubber layer.

Abstract: There is provided a hot melt adhesive for bonding shaped articles and surface structures of ethylene-propylene terpolymer (EPDM) between one another, or with other materials, consisting 100 parts by weight of styrene-ethylene-butylene-styrene block copolymer rubber; 10-150 parts by weight phr (per hundred rubber) aliphatic hydrocarbon resins; 50-300 parts by weight phr (per hundred rubber) aromatic hydrocarbon resins; and up to 1,000 parts by weight phr (per hundred rubber) bitumin with a softening point, according to the Ring and Ball method (DIN test 52011), 37/44-54/59.

Abstract: The invention relates to a mold for producing a T-shaped hose composed of a main hose having a sidewall with an opening and a secondary hose joined at one end to the sidewall opening of the main hose to form a "T". The mold includes a main mandrel for the main hose having a disk-shaped recess on which the main hose is mountable with its opening in registry with the mandrel recess and a secondary mandrel for the secondary hose having a cylindrical recess adjacent to one end thereof. The secondary mandrel is disengageably secured at the one end thereof to the main mandrel adjacent to the recess thereof, so that the mandrels are arranged in the form of a "T" and cooperate with one another to define an interior mold cavity at the zone of connection. The mold further includes an outer mold part that is mountable on the main hose and the secondary hose after each has been mounted on its respective mandrel parts.

Abstract: A motor vehicle pneumatic tire is made of polyurethane or another similar moldable material which hardens into an elastic plastic material and which has a substantially cylindrical or cylindrical belt insert mounted beneath the tread substantially composed of threads, wires or similar stability support elements which are mounted in the circumferential direction of the tire in a spaced-apart manner at a distance of 0.5-3.0 mm and which elements have a cross section of 0.5-2.5 mm. The stability support and the plastic mass of the belt insert encompassing the same having a tensile strength in the circumferential direction of at least 3 Mill.N and the elements of the stability support have a breaking strength of at least 1,500 N.

Abstract: A pneumatic tire made of polyurethane elastomers or other moldable material which can be made into an elastic, plastic material by means of a chemical reaction is provided. The tire includes a belt which is mounted beneath the tread surface which essentially consists of threads of a stress carrier, which threads run in the circumferential direction of the stress carrier. Alternatively, the belt is made of a moldable material which can be hardened into an elastic, plastic material having an E-modulus larger than 20,000 N/cm.sup.2. The tire is characterized by the provision of an increasing bending radius of the neutral axis of the tire sidewall from the tire bead to the edge of the belt.

Abstract: Process for producing elastomer materials which are abrasion resistant in the heat, based on polyurethanes and polyoxides, by reacting aliphatic or aromatic diisocyanates, low molecular polydiols or polydiamines and hydroxyl-containing polyesters or polyethers with a molecular weight between 800 and 5000, especially between 2000 and 3000, in equimolar quantities and in liquid phase, characterized by performing the reaction in the presence of rubber powder having diene units incorporated therein, the powder being dispersed in the reaction mass in an amount of 20%-50% by weight, the reaction being carried out in the presence of sulfur or a peroxide, and the rubber powder having a particle size between 5 and 500.mu., the polyurethane reaction mass having a surplus of double bonds capable of cross-linking and casting the elastomer so produced from the liquid mass into molds. Tires made from the elastomers according to the invention are of excellent properties in their tread surfaces.