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. 01, 1991
Filed:
Apr. 20, 1988
Applicant:
Inventor:
James E Grinde, Anoka, MN (US);
Assignee:
Yamaha Hatsudoki Kabushiki Kaisha, Iwata, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B63H / ;
U.S. Cl.
CPC ...
440 57 ; 440900 ; 440 53 ;
Abstract
An outboard motor for a marine craft which incorporates a surface drive heretofore only found with inboard motors. A specially designed constant velocity universal joint is used to pivotally couple the propeller shaft and propeller shaft extension housing to the outboard's lower unit whereby propeller thrust forces are transmitted directly through the propeller shaft to the transmission's output shaft. Furthermore, provision is made for routing engine cooling water and exhaust through the prop shaft extension housing and the propeller hub, thereby reducing the engine noise.