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:
Apr. 20, 2004
Filed:
Aug. 07, 2002
Willi Schneider, Bad Neustadt, DE;
Joma-Hydromechanic GmbH, Bodelhausen, DE;
Abstract
The invention relates to a vane-cell pump comprising a pump rotor ( ), provided with a radially displaceable rotor blade ( ). Said pump rotor is mounted in a pump stator ( ) which can be pivoted inside a pump bearing house ( ) around a stationary pivotal axis ( ) in a radial position with regard to said pump rotor. A control device ( ) is associated with the pump stator ( ) for automatic pressure adjustment. Said control device has an actuating member protruding on the outside, therefrom, perpendicular to the pivotal axis thereof. The actuating member forms a pivoting piston ( ) in a guide element ( ) of the pumpbearing housing ( ) which is directly impinged upon by a pumping medium. The pivotable piston can pivot in a direction against the action of a pressure spring ( ).