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:
Nov. 14, 1995
Filed:
Aug. 24, 1993
Applicant:
Inventors:
Hans-Georg Haertl, Karlsruhe, DE;
Terry A Berger, Newark, DE (US);
Assignee:
Hewlett-Packard, Palo Alto, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F17C / ;
U.S. Cl.
CPC ...
62 501 ; 62-32 ; 62 506 ; 417313 ; 417572 ;
Abstract
A pumping system for pumping fluids at sub-ambient temperatures where the pumping fluid, after it has been used for its analytical application, is expanded such that the energy of expansion of the pumping fluid can be employed for cooling the pump head or pumping fluid prior to pumping.