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. 06, 2010
Filed:
Jul. 11, 2007
Yoshihiko Ito, Tsukubamirai, JP;
Hideyuki Takada, Tsukubamirai, JP;
Yoshihiko Ito, Tsukubamirai, JP;
Hideyuki Takada, Tsukubamirai, JP;
SMC Corporation, Tokyo, JP;
Abstract
An auxiliary valve member, an auxiliary pilot pressure chamber for applying a pilot fluid pressure to the auxiliary valve body, and a transmitting rod for transmitting operating force of the auxiliary valve body to a main diaphragm are provided other than the main diaphragm which is in contact with or separating from a main valve seat by operating by means of application of the pilot fluid pressure in a diaphragm valve portion, as a mechanism for strengthening valve-closing force of the main diaphragm, so as for the main diaphragm not to be separated from the valve seat even when the fluid pressure from a load is applied to the main diaphragm as adverse pressure.