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:
May. 26, 1998
Filed:
Jun. 26, 1996
Applicant:
Inventors:
Robert William Allington, Lincoln, NE (US);
Daniel Gene Jameson, Lincoln, NE (US);
Dale A Davison, Greenwood, NE (US);
Dale Clay, Lincoln, NE (US);
Robin R Winter, Newburg, OR (US);
Yoossef Tehrani, Lincoln, NE (US);
Assignee:
Isco, Inc., Lincoln, NE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04B / ;
U.S. Cl.
CPC ...
417 53 ; 417 18 ; 417 20 ; 417 22 ; 417 43 ; 7386143 ; 7386144 ; 210101 ; 2101982 ; 210634 ; 210741 ;
Abstract
In a piston pump for pumping liquid carbon dioxide at a temperature below 30 degrees Fahrenheit and pressures at least as high as 7500 psi, the volume leaving the pump is determined by measuring only pressure or other parameter related to flow and movement of the plunger. The position of the piston is measured and the resulting displacement is integrated to determine volume of fluid pumped.