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.

Date of Patent:
Apr. 03, 2018

Filed:

Nov. 25, 2016
Applicant:

Showa Corporation, Gyoda-shi, JP;

Inventors:

Hayato Tsutsui, Haga-gun, JP;

Takahiko Saito, Haga-gun, JP;

Yoshimitsu Komuro, Haga-gun, JP;

Assignee:

SHOWA CORPORATION, Gyoda-Shi, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F15B 15/16 (2006.01); B63H 20/08 (2006.01); B63H 20/10 (2006.01); F15B 15/14 (2006.01);
U.S. Cl.
CPC ...
F15B 15/16 (2013.01); B63H 20/08 (2013.01); B63H 20/10 (2013.01); F15B 15/1428 (2013.01); F15B 15/1447 (2013.01);
Abstract

There are provided a bar-shaped piston rod having one end portion attached to a marine vessel propulsion machine main body; an inner cylinder; an inner piston mounted in the other end portion of the piston rod, is accommodated in the inner cylinder, and divides a space in the inner cylinder into a fourth chamber on the one end portion side and a fifth chamber on the other end portion side; an outer cylinder accommodating the inner cylinder therein; and an outer piston covering an opening portion of one end portion of the inner cylinder in a state where the piston rod is exposed, divides a space in the outer cylinder into a second chamber on one end portion side and a first chamber on the other end portion side, and is formed with a through hole that allows the fourth chamber and the second chamber to communicate with each other.


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