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:
Feb. 15, 2005
Filed:
Mar. 24, 2003
Chun-hung Lin, Hsinchu, TW;
Chen-der Tsai, Hsinchu, TW;
Chin-ching Wu, Hsinchu, TW;
Jung-chen Ho, Hsinchu, TW;
Hann-tsong Wang, Hsinchu, TW;
Chun-Hung Lin, Hsinchu, TW;
Chen-Der Tsai, Hsinchu, TW;
Chin-Ching Wu, Hsinchu, TW;
Jung-Chen Ho, Hsinchu, TW;
Hann-Tsong Wang, Hsinchu, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
The diaphragm valve uses a metal dish-type diaphragm set to control the inflow and outflow of fluid. The metal dish-type diaphragm set is above an air flow channel to control the stem above the metal dish-type diaphragm set, and the air will be blocked by pressing the metal dish-type diaphragm to make it fit the metal valve base in the air flow channel; this non-metal valve base is fixed in the air flow channel by a fixed shrunk ring with a taper cross section, and the in-between metal diaphragm in the metal dish-type diaphragm set is annular in the center to reduce the metallic friction between metal diaphragms, to increase application times and to lower the leakage rate of the diaphragm valve.