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:
Dec. 26, 2000
Filed:
Mar. 10, 2000
Applicant:
Inventor:
Tamotsu Nakamura, Saitama, JP;
Assignee:
Showa Corporation, Saitama, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B63H / ;
U.S. Cl.
CPC ...
440 61 ; 440 53 ;
Abstract
In a tilt cylinder device for an outboard motor, a piston having its piston rod is extends to an outboard motor side and a free piston are freely movably inserted into a cylinder. Within the cylinder are oil chambers S1, S2, and S3. An accumulator chamber S4 is provided so as to surround the cylinder. A third communication passage is formed from the piston to the free piston. In the third communication passage is provided a second relief valve that opens when the oil chamber S3 has exceeded a set pressure. To this second relief valve is additionally provided an opening/closing mechanism for opening or closing the valve from the outside.