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:
Dec. 29, 2009
Filed:
Sep. 07, 2006
Applicants:
Kai Yasuoka, Tokyo, JP;
Kenichi Kazama, Tokyo, JP;
Ayumi Tsuneya, Tokyo, JP;
Shunji Sato, Tokyo, JP;
Inventors:
Kai Yasuoka, Tokyo, JP;
Kenichi Kazama, Tokyo, JP;
Ayumi Tsuneya, Tokyo, JP;
Shunji Sato, Tokyo, JP;
Assignee:
Shinano Electric Refining Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B24B 1/00 (2006.01); B24B 29/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A lapping machine includes a lapping plate, and a workpiece carrier with a workpiece-holding hole disposed on the plate, a workpiece being fitted within the hole in the carrier. The workpiece is lapped while the plate and the carrier are individually rotated and loose abrasive grains are fed onto the plate. A synthetic resin-based elastic abrasive member having a Rockwell hardness (HRS) in the range of −30 to −100 is effective for resurfacing the lapping plate.