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:
Dec. 24, 1985
Filed:
Oct. 18, 1984
Applicant:
Inventor:
Kimiaki Seki, Kasai, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
F04B / ;
U.S. Cl.
CPC ...
417480 ; 92 99 ; 92102 ; 417274 ;
Abstract
A diaphragm type pump device comprising a casing having a cover in which an inlet valve is installed, a diaphragm dividing the interior of the casing into a suction chamber and a discharge chamber, a movable plate attached with the diaphragm and having a discharge valve, and a slide shaft for causing said diaphragm to reciprocatingly move through the movable plate, wherein a rubber sheet is provided to be closely in contact with the diaphragm integrally attached to the movable plate when the movable plate reaches the upper dead point so that fluid does not remain in a space formed between the diaphragm and the rubber sheet.