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. 29, 1993
Filed:
Aug. 29, 1991
Nobuo Hiyama, Utsunomiya, JP;
Yoshiharu Kato, Utsunomiya, JP;
Izumo Industrial Co., Lts., , JP;
Abstract
A tap having a main body having a crest, a heel, and an outer circumference is disclosed. The tap main body has a male screw part at the crest side. At this male screw part, a plurality of grooves opening to the crest and the outer circumference of tap main body is formed. A tap main body has a cutting edge at each ridge part defined by a wall of said plurality of grooves and an outer circumference of a male screw part. These cutting edges each have a crest part and a heel part. The crest part of at least one cutting edge has an axial rake angle which differs from an axial rake angle of the crest part of another cutting edge.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile