Abstract: A method of making a top toothed endless power transmission belt construction that is formed mainly of polymeric material and a belt construction made by such method are provided, the method comprising the steps of disposing the material in substantially cylindrical form on a substantially cylindrical drum-like support member, disposing a substantially cylindrical toothed member about the disposed material, compressing one of the members toward the other of the members with the pressure of pressurized steam to form top teeth in the material and cure the thus formed material with the heat of the steam into a top toothed belt construction, introducing pressurized steam against the other member during part of the time that the one member is being compressed toward the other member by the pressure of the pressurized steam, and temporarily releasing the pressure on the one member before the polymeric material has been cured to permit the gas that has been initially heated and thereby expanded in the polymeric mate

Abstract: A method of making a top toothed endless power transmission belt construction that is formed mainly of polymeric material and a belt construction made by such method are provided, the method comprising the steps of disposing the material in substantially cylindrical form on a substantially cylindrical drum-like support member, disposing a substantially cylindrical toothed member about the disposed material, compressing one of the members toward the other of the members with the pressure of pressurized steam to form top teeth in the material and cure the thus formed material with the heat of the steam into a top toothed belt construction, introducing pressurized steam against the other member during part of the time that the one member is being compressed toward the other member by the pressure of the pressurized steam, and temporarily releasing the pressure on the one member before the polymeric material has been cured to permit the gas that has been initially heated and thereby expanded in the polymeric mate

Abstract: A stapling apparatus and method together with thermoplastic staples used therewith are disclosed and each staple is made entirely of thermoplastic material and has a bight and a pair of legs the outer portions of which are permanently heat shaped in clinched relation followed by immediate cooling.

Abstract: Cord or fabric is reduced to short fiber lengths by applying a point contact compressive force thereto.

Abstract: A method of making endless power transmission belts each having at least a toothed outside surface is provided by building a belt sleeve on a drum and providing a reusable tubular polymeric curing jacket having a toothed inside surface around the sleeve with the teeth thereof adjacent the sleeve and curing the sleeve with the jacket therearound while subjecting the jacket to pressure such that the toothed inside surface of the jacket defines corresponding outside teeth on the sleeve; and, upon cooling the jacket and sleeve such jacket is readily removed for reuse thereby substantially reducing the cost of providing a toothed outside surface on a belt sleeve and belts defined therefrom.

Abstract: A toothed elastomeric endless power transmission belt for operation in an endless path around associated sheaves with minimum noise is provided and comprises a compression section having a plurality of teeth defined by a plurality of grooves in the compression section extending at an angle other than 90.degree. to the endless path with the grooves defining teeth which are adapted to enter and exit each of the associated sheaves gradually during belt operation and the grooves defining associated air-filled columns each of which due to its angular disposition is gradually covered and exposed as the column respectively enters and exits each of the associated sheaves during belt operation resulting in the minimum noise.