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:
Apr. 27, 2010
Filed:
Dec. 27, 2005
Hiroshi Kanemitsu, Toyota, JP;
Masaharu Hatta, Toyota, JP;
Hiroshi Kanemitsu, Toyota, JP;
Masaharu Hatta, Toyota, JP;
Taiho Kogyo Co., Ltd., Toyota-shi, JP;
Abstract
A sliding surfaceA of a shoeundergoes laser radiation in a shape of a large number of parallel lines to form a large number of swollen portionsand concave portionsin adjacent positions thereof. The swollen portionsand the inner side thereof become direct-hardened portionswith a high hardness and the concave portionsand the inner side thereof become double-hardened portions, which are lower in hardness than the swollen portions After the laser hardening, the sliding surfaceA undergoes lapping up to a position of an imaginary lineto delete the relief and form a flat and smooth plane. Thereafter the sliding surfaceA undergoes buffing so that portions with a low hardness are chipped off more than portions with a high hardness to form a large number of minute irregularities on the sliding surfaceA.