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:
Sep. 22, 2015
Filed:
Jan. 13, 2010
Seiji Ohhashi, Toyokawa, JP;
Katsuya Matsumoto, Toyokawa, JP;
Yousuke Suzuki, Toyokawa, JP;
OSG CORPORATION, Toyokawa-shi, JP;
Abstract
Flutes defining inside diameter finishing edges are formed in middle portions of relief parts arranged in three linear arrays which are located between a plurality of linear arrays of protruding parts in a chamfered end section, about an axis 0, and the inside diameter finishing edges are formed along one of opposite open-end edges of each flute which is located on an upstream side of the flute as seen in a tap rotating direction A, and are offset by a predetermined angle θ in the tap rotating direction A with respect to the protruding parts in the chamfered end section. Accordingly, all of the plurality of linear arrays of protruding parts in the chamfered end section can be used to form the internal thread by plastic deformation of an inner circumferential surface of a hole to be tapped.