Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1990-08-09
1993-06-22
Loney, Donald J.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156 91, 156123, 156130, 156143, 156169, 156187, 156191, 15624411, 156245, 57 13, 57 62, 57297, 57311, 242 702, 305 38, 2641761, 2641772, 264241, 264503, 264540, 264522, B65H 8100, D01H 702
Patent
active
052213927
ABSTRACT:
The described process comprises the following operating steps: an extrusion step in which the raw rubber is extruded in the form of a strip (7) from an appropriate machine (1); a winding step in which the rubber strip (7) is wound about a rotating drum (2); an insert application step in which steel insert pieces (16) are applied to the rubber layer wound about the rotating drum (2); a second winding step in which the rubber strip (7) is wound on the steel insert pieces (16); a coiling step in which a steel wire (4) is wound into spiral shape on the rubber layer wound about the rotating drum (2); a third winding step in which the rubber strip (7) is wound on the coiled steel wire (4) as far as a product in the form of a ring is achieved; a removal step in which the ring-shaped produce is removed from the drum (2); an introduction step in which the ring-shaped product is introduced into a mold; a forming and vulcanization step carried out on the product in the mold; an extraction step in which the ready track is withdrawn from the mold. The track exhibits a constant transverse section over the whole endless extension thereof and is provided with a metal core located inside it and consisting of at least a steel wire band made of a single steel wire (4) wound into spiral.
REFERENCES:
patent: 2387802 (1945-10-01), Mayne
patent: 2845308 (1958-07-01), Woltemar
patent: 3582154 (1968-06-01), Russ
patent: 3874982 (1975-04-01), Marzocchi et al.
patent: 4714302 (1987-12-01), Svensson et al.
patent: 4783230 (1988-11-01), Perkins
Gummibefreiung. vol. 54, No. 12, Dec. 1978, pp. 44-45.
Loney Donald J.
Mai S.p.A.
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