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:
Aug. 01, 2017
Filed:
Mar. 12, 2013
Applicant:
Kayaba Industry Co., Ltd., Minato-ku, Tokyo, JP;
Inventor:
Takeshi Terao, Sagamihara, JP;
Assignee:
KYB Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16K 31/12 (2006.01); F16K 11/07 (2006.01); F15B 21/04 (2006.01); F15B 13/04 (2006.01); F16K 31/122 (2006.01); F15B 13/042 (2006.01); F16K 31/124 (2006.01);
U.S. Cl.
CPC ...
F16K 31/1221 (2013.01); F15B 13/042 (2013.01); F16K 11/07 (2013.01); F16K 11/0712 (2013.01); F16K 11/0716 (2013.01); F16K 31/124 (2013.01); F15B 21/044 (2013.01); F15B 2211/329 (2013.01); F15B 2211/355 (2013.01); Y10T 137/8671 (2015.04); Y10T 137/86582 (2015.04);
Abstract
A change-over valve comprises a spool housed in a spool housing, and a pilot chamber facing at least an end of the spool. An axial passage is formed in the spool along the axial direction. While being connected to a pilot chamber, the axial passage communicates with a tank passage via a small hole having an opening on an outer periphery of the spool in accordance with displacement of the spool, to discharge the air in the pilot chamber to the tank passage. Since the axial passage is formed at a location offset from a center axis of the spool, a length of the small hole is shortened and the small hole is easily processed.