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:
Jun. 16, 2015
Filed:
Jan. 21, 2011
Applicant:
Peter Kreuter, Aachen, DE;
Inventor:
Peter Kreuter, Aachen, DE;
Assignee:
META Motoren-und Energie-Technik GmbH, Herzogenrath, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B 49/20 (2006.01); F04B 17/05 (2006.01);
U.S. Cl.
CPC ...
F04B 49/20 (2013.01); F04B 17/05 (2013.01);
Abstract
A pump device is operated according to a method for varying the duration of a supply stroke of a pump element, the supply stroke of which is actuated by a rotatably driven pump shaft (P) over a predetermined rotational position range of the pump shaft. In the method, the pump shaft (P) is rotatably driven by a drive shaft (A) and the angular speed of the pump shaft, at a constant angular speed of the drive shaft, is increased and decreased at least once during one revolution of the pump shaft.