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. 14, 1987

Filed:

Sep. 27, 1985
Applicant:
Inventors:

Yasuo Tsuyuki, Saitama, JP;

Yuzoh Gotoh, Saitama, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F15B / ;
U.S. Cl.
CPC ...
9136 / ; 605471 ;
Abstract

In a hydraulic servomechanism having an input shaft positioned within a power piston, a key member provided around the input shaft and cooperating with an annular groove in the power piston, so that required movement of the input shaft during operation of the mechanism is reduced.


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