The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 30, 1988
Filed:
May. 21, 1986
Ken Matsuoka, Toyohashi, JP;
Masanobu Yamazaki, Kosai, JP;
Fuji Kiko Company, Limited, Tokyo, JP;
Abstract
A method for manufacturing a poly-V pulley includes a process for slitting and compressing the peripheral edge portion of an essentially flat blank for forming a widened and thickened flange wall. A series of relatively narrow, deep, V-shaped grooves are cold rolled. The poly-V pulley thus produced has the flange wall with poly-V grooves, from the intermediate portion of which a web extends radially inward. This structure provides good dynamic balance of rotation for the pulley and thus prolongs the life not only of the pulleys per se but also the belt to be put around the pulley. Further, the manufacturing method allows the manufacture of relatively small diameter poly-V pulleys.