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:
Aug. 18, 1981

Filed:

Jun. 06, 1979
Applicant:
Inventors:

Akira Nakamura, Shizuoka, JP;

Masato Oguri, Susono, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60T / ; F15B / ;
U.S. Cl.
CPC ...
6054 / ; 60554 ; 9136 / ; 9136 / ;
Abstract

A booster having a feature of stroke jumping. In this type of booster a power piston, which is actuated by the difference of fluid pressure acting on either side thereof, is so constructed as to be able to shift, in relation to a control piston with a built-in control valve for controlling the fluid pressure, within a certain limited distance. Between the output member of the booster and the two pistons, i.e., power and control, is disposed a power lever, which is abutted at either end thereof on the output portion of the two pistons and at the middle portion thereof on the output member, for transmitting the movement of both pistons to the output member, while allowing the relative movement of both pistons. The output stroke of this booster can be made greater than the input stroke by means of the relative movement of the power piston to the control piston.


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