logo

For the Inventor, By the Inventor

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 11125342 B1

PDFFull Text
Date of Patent:
Sep. 21, 2021

Filed:

Dec. 20, 2019

Spool valve

Applicant:

Ckd Corporation, Aichi, JP;

Inventors:

Yasuhisa Hirose, Aichi, JP;

Takahiro Minatani, Aichi, JP;

Keiichi Nishikawa, Aichi, JP;

Yoshinori Tanaka, Aichi, JP;

Naofumi Yoshida, Aichi, JP;

Assignee:

CKD CORPORATION, Aichi, JP;

Attorney:

Osha Bergman Watanabe & Burton LLP

Primary Examiner:

Kevin R Barss

Int. Cl.
CPC ...
F16K 3/34 (2006.01); F16K 11/07 (2006.01); F16K 3/26 (2006.01); F16K 27/00 (2006.01);
U.S. Cl.
CPC ...
F16K 3/34 (2013.01); F16K 3/26 (2013.01); F16K 11/0712 (2013.01); F16K 27/003 (2013.01); Y10T 137/87981 (2015.04);
Abstract

A spool valve includes: a cylindrical tubular sleeve that extends in an axial direction and comprises a first port and a second port separated from each other in the axial direction, and a cylindrical columnar spool that extends in the axial direction and comprises a diameter reduced portion. The cylindrical columnar spool moves in the axial direction through the sleeve and opens and closes the first port to cause the first port to or not to communicate with the second port, and the first port has a first through hole having a first width in a circumferential direction of the sleeve, and a second through hole having a second width different from the first width in the circumferential direction.

Find Patent Forward Citations

Hirose, Yasuhisa. (2021). Spool valve (U.S. Patent No. 11125342). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11125342

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Loading…