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:
Nov. 06, 2012
Filed:
Mar. 16, 2010
Applicant:
Masakazu Hattori, Gifu, JP;
Inventor:
Masakazu Hattori, Gifu, JP;
Assignee:
Nabtesco Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F15B 13/043 (2006.01);
U.S. Cl.
CPC ...
Abstract
A valve unitincludes a first valve bodywhich is slidable in a valve housingand a second valve bodywhich is slidable with respect to the first valve body, and the valve housinghas a first passageand a second passagein both of which pressure fluid flows to slide the second valve body, a pump port, a tank port, a first cylinder port, and a second cylinder port. A first state, a third state, a second state, and a fourth stateare realized by a combination of a position of the first valve bodyafter sliding and a position of the second valve bodyafter sliding with respect to the first valve body