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:
Apr. 20, 2021
Filed:
Jul. 02, 2019
Hamanakodenso Co., Ltd., Kosai, JP;
Tomoaki Warashina, Kosai, JP;
Takao Ishida, Kosai, JP;
HAMANAKODENSO CO., LTD., Shizuoka-Pref., JP;
Abstract
A control valve includes a housing, a valve body arranged in a valve chamber of the housing, and a support member fixed to the housing and supporting the valve body in the valve chamber. The valve body has a tubular shape into which the support member is inserted, and the valve body is slidable on the support member between a first position to close an inlet passage and a second position to close a drain passage. The valve body includes a skin layer forming an outer surface of the valve body, and a core layer under the skin layer. The outer surface of the valve body includes a core exposed portion where the core layer is exposed without being covered with the skin layer.