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 10221955 B1

Date of Patent:

Mar. 05, 2019

Filed:

Nov. 08, 2016

Valve device

Applicant:

Piolax, Inc., Yokohama-shi, JP;

Inventor:

Kosei Yamaguchi, Yokohama, JP;

Assignee:

PIOLAX, INC., Yokohama-Shi, Kanagawa, JP;

Attorney:

McGinn I.P. Law, Group, PLLC.

Primary Examiner:

Mary McManmon

Assistant Examiner:

Patrick Williams

Int. Cl.

CPC ...

F16K 17/196 (2006.01); F16K 15/02 (2006.01); F16K 27/02 (2006.01); B60K 15/035 (2006.01); B60K 15/03 (2006.01);

U.S. Cl.

CPC ...

F16K 17/196 (2013.01); B60K 15/03519 (2013.01); F16K 15/026 (2013.01); F16K 27/0209 (2013.01); B60K 2015/03296 (2013.01); Y10T 137/7772 (2015.04); Y10T 137/7776 (2015.04); Y10T 137/7777 (2015.04); Y10T 137/7779 (2015.04);

Abstract

One embodiment relates to a valve device. The valve device includes: a valve case; a valve element slidably disposed within a valve chamber defined in the valve case; and a positive pressure spring configured to urge the valve element toward a valve seat in the valve case. The valve element includes an outer circumferential portion having a predetermined length extending along an inner circumference of the valve chamber. The outer circumferential portion includes plural opening portions. And, ribs project from the inner circumference of the valve chamber to enter into the opening portions, thereby limiting movement of the positive pressure spring in a radial direction.

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