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. 06, 2010
Filed:
Nov. 18, 2004
Takashi Nozaki, Iwata, JP;
Hiroyuki Hakamata, Iwata, JP;
Keisuke Sone, Iwata, JP;
Yoshihiko Hayama, Iwata, JP;
Takashi Nozaki, Iwata, JP;
Hiroyuki Hakamata, Iwata, JP;
Keisuke Sone, Iwata, JP;
Yoshihiko Hayama, Iwata, JP;
NTN Corporation, Osaka, JP;
Bridgestone Corporation, Tokyo, JP;
Abstract
A shaft coupling includes plates fitted on ends of input and output shafts, respectively. A plurality of guide grooves are formed in the opposed surfaces of the plates, respectively, so that each of the grooves extends perpendicular to the corresponding groove formed in the other plate. A steel ball is disposed between each pair of guide grooves of the plates at a portion where the pair of grooves cross each other. When the steel balls are pushed by the driving plate, they push the driven plate while rolling in the guide grooves, with their movements restricted by a retainer in the radial direction of the plates. Thus, large power can be smoothly transmitted between the rotary members with less frictional resistance. The offset amount can be changed easily. Between the plates, there are only the steel balls and the retainer.