B - Operations – Transporting – 21 – H
Patent
B - Operations, Transporting
21
H
26/174, 74/244
B21H 1/04 (2006.01) B21D 53/26 (2006.01) B21K 1/42 (2006.01) F16H 55/49 (2006.01)
Patent
CA 1294461
A PULLEY WITH A NUMBER OF V-SHAPED GROOVES AND A METHOD OF MAKING THIS PULLEY ABSTRACT A pulley with a numer of V-shaped grooves, especially having a stepped shape, comprises a rim or rims and a core which are separately formed by an appropriate plastic process and they are fixed or connect fixedly to each other by a metallurgical or mechanical processing. According to one embodiment, a short pipe- shaped blank is rolled to produce a rim with a number of V-shaped grooves, and thereafter the fixation is accieved. According to a second embodiment, a blank or blanks is rolled to form a rim or rims with a number of V-shaped grooves, and simultaneously the rim or rims is fixed to a core by the action of the rolling. According to a third embodiment, a blank is rolled to produce a rim with a number of V-shaped grooves, and the core is enlarged in order to fix the rim or rims to the core.
567958
Bereskin & Parr
Sanshu Press Industry Co. Ltd.
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