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. 17, 1996
Filed:
May. 31, 1995
Applicant:
Inventor:
Hiroshi Ogino, Hamamatsu, JP;
Assignee:
Sanshin Kogyo Kabushiki Kaisha, Shizuoka-ken, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B63H / ;
U.S. Cl.
CPC ...
440 75 ; 440 80 ; 416129 ; 192 487 ;
Abstract
A transmission for a counter-rotating propeller system of a watercraft outboard drive includes a reduced friction coupling between the inner and outer shafts which permits transfer of the thrust loading on the inner shaft to the outer shaft under a reverse drive condition. The inner and outer shafts include opposing transverse surfaces which are separated by a pair of anti-friction washers. The washers allow the shafts to rotate in opposite directions with minimum friction, while allowing the opposing surfaces to act on each other through the washers to transfer the trust loading when the watercraft is driven in reverse.