Multi-stepped pulley, method of manufacturing same, and apparatu

Details Multi-stepped pulley, method of manufacturing same, and apparatu Multi-stepped pulley, method of manufacturing same, and apparatu

1998-05-13

2000-06-06

Bucci, David A.

Endless belt power transmission systems or components

Friction drive pulley or guide roll

Including plural, coaxial, circumferential belt-receiving...

474170, F16H 5549

Patent

active

060712058

ABSTRACT:
A multi-stepped pulley, and a method and apparatus for manufacturing the same, wherein the mechanical strength is increased while keeping down an increase of mass and a rise of manufacturing costs by pressing against portions of a surface of a hollow metal material having a circular cross-section corresponding to a connection portion of a plurality of pulleys by pressing rollers and simultaneously crushing the material in an axial direction so as to integrally form first and second rims, first and second webs, and a connection portion thereof.

REFERENCES:
patent: 2186290 (1940-01-01), Gordon et al.
patent: 4522612 (1985-06-01), Frazer
patent: 4548592 (1985-10-01), Ohhashi et al.
patent: 4710152 (1987-12-01), Ichikawa et al.
patent: 4881426 (1989-11-01), Serizawa et al.
patent: 5651181 (1997-07-01), Shohara

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