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. 27, 2005
Filed:
Jul. 10, 2003
Applicants:
Yasuhito Koike, Iwata, JP;
Nobuhiro Nakazawa, Fukuroi, JP;
Inventors:
Yasuhito Koike, Iwata, JP;
Nobuhiro Nakazawa, Fukuroi, JP;
Assignee:
NSK-Warner K.K., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16D065/10 ;
U.S. Cl.
CPC ...
Abstract
A brake drum for a wet-type band brake has a large number of grooves substantially along the circumferential direction on a slide contact surface with the brake band. Each adjacent grooves are smoothly linked to each other through a substantially convex arcuate cross sectional-portion. A method for manufacturing the brake drum comprises the steps of forming the grooves by cutting work, and forming a border portion between each adjacent grooves in a substantially convex arcuate cross section by plastic working using a forming roller.