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. 12, 2007
Filed:
Aug. 10, 2002
Michael Weigand, Elfershausen, DE;
Bernd Scheit, Bad Bocklet, DE;
Stefan Brand, Bad Kissingen, DE;
Thomas Hildenbrand, Bad Brückenau, DE;
Michael Weigand, Elfershausen, DE;
Bernd Scheit, Bad Bocklet, DE;
Stefan Brand, Bad Kissingen, DE;
Thomas Hildenbrand, Bad Brückenau, DE;
perma-tec GmbH & Co. KG, Euerdorf, DE;
Abstract
The invention relates to a metering device for lubricant having a lubricant reservoir (), a piston (), which is arranged on a threaded spindle (), within the lubricant reservoir and a drive head, which has a drive shaft () connected to the threaded spindle () and an electromechanical drive () for actuating the drive shaft. The drive shaft () contains a lubricant passage duct () which opens into the lubricant storage space of the lubricant reservoir. A ram () is inserted into the lubricant passage duct () of the drive shaft, said ram having an axial bore () with a nonreturn valve () on the inlet side, and also a ram head () which is arranged in a rotationally fixed manner and is loaded by a compression spring (). The ram head () bears under the effect of the compression spring () against a control surface () of the drive shaft (). The control surface () and the associated contact surface of the ram head () are designed as slotted-guide surfaces which, when the control surface () rotates, bring about stroke movements of the ram (), said movements conveying lubricant through the bore () in the ram () to a lubricant outlet at the end of the ram.