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. 25, 2013
Filed:
Feb. 12, 2010
Applicants:
Minoru Murata, Tokyo, JP;
Shigeru Murata, Tokyo, JP;
Inventors:
Minoru Murata, Tokyo, JP;
Shigeru Murata, Tokyo, JP;
Assignee:
Yamada Corporation, , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B 17/00 (2006.01); F04B 35/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A valve body for pumps has a compressed air-filled chamber in the center thereof and a compressed air supply port through which compressed air is supplied into the compressed air-filled chamber. The outer surface of the valve body is provided with an annular groove-shaped air supply chamber that communicates between the compressed air-filled chamber and a pump-side air chamber. Compressed air supplied into the compressed air-filled chamber through the compressed air supply port is supplied into the pump-side air chamber through the air supply chamber.