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. 26, 2007
Filed:
Jun. 02, 2004
Masakuni Kainuma, Saitama-ken, JP;
Toshikazu Aoki, Saitama-ken, JP;
Keiji Tamaki, Saitama-ken, JP;
Katsuo Uematsu, Saitama-ken, JP;
Tomomasa Fujita, Saitama-ken, JP;
Hiroshi Chinda, Saitama-ken, JP;
Akihiro Hayashi, Saitama-ken, JP;
Mitsuaki Nakanishi, Saitama-ken, JP;
Masakuni Kainuma, Saitama-ken, JP;
Toshikazu Aoki, Saitama-ken, JP;
Keiji Tamaki, Saitama-ken, JP;
Katsuo Uematsu, Saitama-ken, JP;
Tomomasa Fujita, Saitama-ken, JP;
Hiroshi Chinda, Saitama-ken, JP;
Akihiro Hayashi, Saitama-ken, JP;
Mitsuaki Nakanishi, Saitama-ken, JP;
Fujikura Rubber Ltd., Tokyo, JP;
Abstract
An electro-pneumatic air pressure regulator includes a primary pressure introduction port, a secondary pressure output port, a pilot pressure chamber, a main valve for opening and closing a communicating conduit, a floating piston which actuates the main valve, a nozzle conduit via which the pilot pressure chamber is communicatively connected to the atmosphere, a flapper which includes a leaf spring facing an open end of the nozzle conduit, and an electromagnetic drive system which deforms the leaf spring to vary a position of the flapper relative to the open end of the nozzle conduit in accordance with the magnitude of an analogue input signal. The flapper includes a conical projection which projects toward the open end of the nozzle conduit. A conical recess corresponding to the conical projection is formed on an end face of the nozzle conduit around the open end thereof.