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.
Patent No.:
Date of Patent:
May. 15, 2018
Filed:
Jul. 14, 2015
Applicant:
Kyb Corporation, Tokyo, JP;
Inventor:
Futoshi Yoshida, Kanagawa, JP;
Assignee:
KYB Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K 11/07 (2006.01); F16K 31/122 (2006.01); F16K 31/42 (2006.01); F15B 13/043 (2006.01); F15B 13/04 (2006.01); F15B 21/06 (2006.01);
U.S. Cl.
CPC ...
F16K 11/07 (2013.01); F15B 13/0435 (2013.01); F16K 31/122 (2013.01); F16K 31/426 (2013.01); F15B 13/0402 (2013.01); F15B 21/06 (2013.01); F15B 2013/0409 (2013.01);
Abstract
In a directional control valve, working fluid to be supplied to a first pressure chamber is supplied to the first pressure chamber via a hydrostatic bearing provided on an end of a main spool on the first pressure chamber side, and working fluid to be supplied to a second pressure chamber is supplied to the second pressure chamber via a hydrostatic bearing provided on an end of the main spool on the second pressure chamber side, and a pilot valve alternately communicates the first pressure chamber and the second pressure chamber with a tank.