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:
Aug. 16, 1994
Filed:
Jan. 21, 1994
Applicant:
Inventors:
Steven P Plager, Burnsville, MN (US);
Daniel J Kvinge, Shoreview, MN (US);
Assignee:
Graco Inc., Golden Valley, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16L / ;
U.S. Cl.
CPC ...
138 30 ; 138 31 ;
Abstract
A device for smoothing pressure fluctuations from a liquid pump, the device having a liquid chamber connectable to the pump and having an air chamber connectable to a source of pressurized air through an internal valve, the liquid chamber being separated from the air chamber by a diaphragm, the diaphragm connected to the valve, to permit pressurized air to equalize liquid pressure surges and to supplement liquid pressure drops, and to automatically adjust for changes in average liquid pressure delivery conditions.