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:
Jun. 04, 2019
Filed:
Aug. 16, 2016
Tgk Co., Ltd., Tokyo, JP;
Ryosuke Satake, Tokyo, JP;
Takeshi Kaneko, Tokyo, JP;
TGK CO., LTD., Tokyo, JP;
Abstract
A control valve of an embodiment includes a disc coaxially in contact with a diaphragm, and a shaft configured to transmit a drive force in an axial direction caused by displacement of the diaphragm to a valve element. The diaphragm has a corrugated portion between a flat portion and the outer peripheral portion, the flat portion having a contact surface with which the disc is in contact. The corrugated portion includes substantially N+0.5 corrugations (N being a natural number) each protruding relative to a reference surface, the corrugations being formed between the outer peripheral portion and the flat portion, the reference surface being one surface of the outer peripheral portion. A height of each of the N corrugations of the corrugated portion is smaller than a height of the flat portion, the heights each being a height relative to the reference surface in an unloaded condition.