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:
Jan. 13, 2004
Filed:
Aug. 09, 2002
Applicant:
Inventor:
Reto Schöb, Volketswil, CH;
Assignee:
Levitronix LLC, Waltham, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04B 1/700 ; F16L 5/504 ;
U.S. Cl.
CPC ...
F04B 1/700 ; F16L 5/504 ;
Abstract
A method and a pump apparatus are provided for the generation of an adjustable, substantially constant volume flow of a fluid by means of a pump apparatus, wherein the fluid ( ) is forwarded by the pump apparatus ( ) from a reservoir ( ) into a flow connection ( ). A rotary pump ( ) is used as the pump apparatus and the rotary pump ( ) is operated at an efficiency which is less than half the maximum efficiency (&eegr; ) of the rotary pump ( ).