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:
Jun. 26, 1984
Filed:
Dec. 09, 1981
Yukio Kanemitsu, Hyogo, JP;
Abstract
Improvements in a method of making a poly-V pulley from a metal plate which has V-shaped poly-V grooves formed in a cylindrical flange wall of a cup-shaped blank, by the application of pressing, compression and finishing processes to the blank. More particularly, the improvements reside in the compression process in which the opening end of the flange wall of a cup-shaped blank is fittingly held by a fitting groove which is formed in an upper peripheral edge of a lower rotary pressing form, the groove having a slope with a predetermined upward inclination in the radially inward direction toward the center of the form. Auxiliary rollers are pressed into groove valleys of the corrugated wall of the blank, and the blank is then axially compressed while rotating the blank, thereby converting the corrugated wall into a grooved wall having therein a series of V-shaped crests and valleys.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile