B - Operations – Transporting – 29 – D
Patent
B - Operations, Transporting
29
D
18/1005, 154/52
B29D 29/08 (2006.01) B29C 43/22 (2006.01) B29C 70/08 (2006.01) B29C 70/46 (2006.01)
Patent
CA 1229709
Abstract of the Disclosure A method of forming a double timing belt wherein a belt preform is firstly formed with teeth on one face thereof. The opposite face of the belt in which the tensile cord is embedded is provided with oppositely projecting teeth in accurate alignment with the teeth of the preform by a successive molding of pluralities of such teeth to the opposite face, with the preform entrained about a pair of adjustably spaced toothed pulleys. Accurate uniform pitch line difference is maintained by providing shims between the mold and belt support during the molding of the second set of teeth to the preform. The mold and support are retained in accurate alignment by cooperating dowels and recesses on the support and mold members. Cooling devices are provided at opposite ends of the mold for preventing full vulcanization of the tooth rubber thereat.
473225
Goto Shigeo
Tanaka Toshihiro
Yoshimi Keiichi
Meredith & Finlayson
Mitsuboshi Belting Ltd.
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