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:
Mar. 03, 2026

Filed:

Jul. 21, 2022
Applicant:

Kyb Corporation, Tokyo, JP;

Inventor:

Shunsuke Kubo, Gifu, JP;

Assignee:

KYB CORPORATION, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F15B 11/00 (2006.01); F15B 13/01 (2006.01); E02F 9/22 (2006.01);
U.S. Cl.
CPC ...
F15B 11/003 (2013.01); F15B 13/01 (2013.01); E02F 9/226 (2013.01); E02F 9/2267 (2013.01); F15B 2211/30505 (2013.01); F15B 2211/30515 (2013.01); F15B 2211/329 (2013.01);
Abstract

A load holding mechanism includes a switching valve configured to switch an operation of an operation check valve, and a relief valve configured to open when pressure in a load-side pressure chamber reaches predetermined pressure, and the switching valve includes a drain chamber provided on an opposite side of a spring chamber with a spool interposed therebetween, a drain passage connected to the relief valve and connected to at least one of the drain chamber and the spring chamber, a pressure leading passage configured to connect the drain passage and a downstream side of the spool, and a check valve provided in the pressure leading passage and configured to allow only a flow of the working fluid from the drain passage to the downstream side of the spool.


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