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:
Jan. 16, 1990
Filed:
Jan. 26, 1989
Applicant:
Inventor:
Nobuo Komeyama, Osaka, JP;
Assignee:
Koyo Seiko Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B25G / ;
U.S. Cl.
CPC ...
403288 ; 403337 ; 403355 ; 464130 ;
Abstract
A coupling which transfers torque from one shaft to another through a fitting portion of a key and a keyway. Seal members are provided in gaps which are formed between opposite surfaces of the key and keyway and which do not transfer torque, so as to prevent entry of water into the gaps without bearing pressure due to the torque.