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:
Mar. 22, 1994
Filed:
Mar. 01, 1993
Applicant:
Inventors:
Ronald L Wiley, Marietta, GA (US);
John H Bearden, Marietta, GA (US);
Assignee:
The Coca-Cola Company, Atlanta, GA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B / ;
U.S. Cl.
CPC ...
417274 ; 417439 ;
Abstract
An auxiliary chamber is connected to the main pumping chamber of a liquid dispensing pump. The auxiliary chamber includes a resilient rolling diaphragm in fluid communication with the fluid in the main pumping chamber and is expandable for receiving liquid from the main pumping chamber during an output stroke with an adjustable stop member being located behind the diaphragm for restricting the displacement of the diaphragm by the volume of fluid entering the secondary chamber from the pumping chamber and thus controlling the output from the pump by controlling the net internal pump chamber volume.