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:
May. 05, 2015
Filed:
Dec. 26, 2005
Hiroshi Kanemitsu, Toyota, JP;
Masaru Yoshikawa, Toyota, JP;
Masaharu Hatta, Toyota, JP;
Taiho Kogyo Co., Ltd., Toyota-shi, Aichi, JP;
Abstract
A hemispherical shoeis equipped with a sliding surfaceA which slides with a swash plate, and a hemispherical convexB. Hardening is performed by radiating a laser so that minute circlesmay be drawn on the sliding surfaceA. Then, lapping is given to the sliding surfaceA and, finally, buffing is given thereto. Thereby, the annular swelling portions' and concavities′ are formed in positions of the circlesand, further, lubricating oil passages′ which include net-like concavities are formed in the sliding surfaceA. A hardening part is formed of the above-mentioned annular swelling portions′. The above-mentioned annular swelling portions′ are formed so that a ratio of an area of a total of all the above-described annular swelling portions′ occupying an area of the sliding surfaceA which is a hardening object domain may become 0.3 to 0.8. It is possible to provide a shoewhich is good in seizure resistance in comparison with the past.