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. 09, 1991
Filed:
Jun. 19, 1989
Applicant:
Inventor:
Yukio Sumigawa, Hamamatsu, JP;
Assignee:
Sanshin Kogyo Kabushiki Kaisha, Hamamatsu, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B63H / ;
U.S. Cl.
CPC ...
440 61 ;
Abstract
A tilting device for a tiltable outboard drive unit on a marine vessel which prevents the drive unit, when in the tilted-down position, from freely moving toward the tilted-up position during normal operation. The tilting device includes a tilt cylinder device having a bypass valve, and is arranged so that the bypass valve of the tilt cylinder device is automatically closed when the drive unit is in the tilted-up position. Thereafter, when the drive unit is moved to the tilted-down position the bypass valve remains closed, thereby preventing the drive unit from freely moving toward the tilted-up position during normal operation.