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:
May. 01, 2012

Filed:

Sep. 05, 2008
Applicant:

Satoshi Chikamatsu, Tokyo, JP;

Inventor:

Satoshi Chikamatsu, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16F 9/34 (2006.01);
U.S. Cl.
CPC ...
Abstract

A shock absorber comprises a first passage () and a second passage () connecting a first fluid chamber () and a second fluid chamber (). A throttle () narrows an inflow of fluid to the first passage () according to an applied displacement pressure. The displacement pressure includes a fluid pressure in one of the two fluid chambers () and a pressure that depends on a velocity of the fluid flow through the throttle (). A spring () biases the throttle () in the opposite direction to narrow the fluid flow. The second passage () comprises a pair of orifices (). By exerting a pressure between the pair of orifices () on the throttle () in the opposite direction to narrow the fluid flow, the spring load required of the spring () is reduced.


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