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. 22, 2017
Filed:
Oct. 01, 2015
Nitto Kohki Co., Ltd., Ohta-ku, Tokyo, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi, JP;
Takuya Nishio, Tokyo, JP;
Hirofumi Onishi, Toyota, JP;
NITTO KOHKI CO., LTD., Tokyo, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-Shi, Aichi-Ken, JP;
Abstract
Provided is a check valve element enabling efficient supply of fluid while suppressing the occurrence of chattering. The check valve element is provided to be displaceable upstream and downstream in a downstream flow path extending downstream from a valve seat having an opening for introducing a fluid and is pressed against the valve seat by a pre-closing urging force applied thereto toward an upstream side. The check valve element has an arresting portion provided on an outer peripheral surface thereof, a sliding resistance imparting member support portion supporting a sliding resistance imparting member such that the sliding resistance imparting member slides along the wall of the downstream flow path when the check valve element is displaced upstream and downstream, and an urging member support portion supporting an urging member urged upstream so that the urging member urges the sliding resistance imparting member upstream, thereby causing the sliding resistance imparting member to increase in outer diameter while being arrested by the arresting portion.