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:
Oct. 20, 1998
Filed:
Nov. 18, 1996
Applicant:
Inventor:
Thomas S Green, Atwater, OH (US);
Assignee:
ABC TechCorp, Akron, OH (US);
Primary Examiner:
Int. Cl.
CPC ...
B67D / ;
U.S. Cl.
CPC ...
222-1 ; 222 59 ; 222 61 ; 222318 ;
Abstract
A method and apparatus for dispensing a predetermined quantity of a liquid from a dispensing pump. A recirculation path from the dispensing pump to a bulk reservoir is configured to be substantially identical to the dispensing path itself. Periodically, a recirculation cycle is undertaken and the flow rate during the recirculation cycle is determined. With the recirculation and dispensing paths being identical, the dispensing rate for the dispensing path is then known. The method for accurately determining the recirculation rate is derived from Boyle's law to determine the specific volume dispensed in a specific recirculation cycle time.