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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.:

US 10415710 B1

PDFFull Text
Date of Patent:
Sep. 17, 2019

Filed:

Nov. 26, 2015

Rotary valve and fluid pressure actuator unit including rotary valve

Applicant:

Kyb-ys Co., Ltd., Nagano, JP;

Inventors:

Nobuyuki Kobayashi, Nagano, JP;

Keiichi Matsuzaki, Nagano, JP;

Assignee:

KYB-YS Co., Ltd., Nagano, JP;

Attorney:

Rabin & Berdo, P.C.

Primary Examiner:

John Fox

Int. Cl.
CPC ...
F16K 3/26 (2006.01); F15B 11/04 (2006.01); F16K 11/085 (2006.01); B60J 7/16 (2006.01); B60J 5/04 (2006.01); E05F 15/53 (2015.01); E05F 3/12 (2006.01); E05F 15/51 (2015.01); B60J 7/12 (2006.01); B60J 7/14 (2006.01); E05F 3/14 (2006.01); F16K 3/32 (2006.01); F16K 5/10 (2006.01);
U.S. Cl.
CPC ...
F16K 3/265 (2013.01); B60J 5/0473 (2013.01); B60J 7/1621 (2013.01); E05F 15/53 (2015.01); F15B 11/04 (2013.01); F16K 3/26 (2013.01); F16K 11/0856 (2013.01); B60J 7/1204 (2013.01); B60J 7/141 (2013.01); E05F 3/12 (2013.01); E05F 3/14 (2013.01); E05F 15/51 (2015.01); E05Y 2900/516 (2013.01); F16K 3/32 (2013.01); F16K 5/10 (2013.01);
Abstract

A rotary valve that controls a flow rate at which working oil is supplied to and discharged from a hydraulic cylinder that causes a wing to rotate about a rotary shaft includes a rotor that rotates as the wing rotates about the rotary shaft, and a first control flow passage and a second control flow passage formed in the rotor to control the flow rate at which the working fluid is supplied to and discharged from the hydraulic cylinder, wherein the first control flow passage and the second control flow passage respectively vary a resistance exerted on a flow of the working fluid passing therethrough as the rotor rotates.

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