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:
Oct. 29, 1991
Filed:
Jul. 03, 1989
Hans Stolzenberg, Korschenbroich, DE;
Karl-Heinz Schmitz, Meerbusch, DE;
Paul Forkardt GmbH & Co. KG, Dusseldorf, DE;
Abstract
A power-operated chuck having a chuck body and clamping jaws that are displaceably guided in radial guides of the chuck body and that are adapted to be actuated by at least one drive element, which is displaceably guided in the chuck body and is actuated by a force producer that is operated with pressure medium. At least one chamber for receiving lubricating grease is provided in the chuck body, with lubricating bores establishing communication between the chamber and at least some glide surfaces provided for the chuck. At least one chuck component is provided that is moved during actuation of the clamping jaws, with this at least one chuck component extending into the chamber for the production of a pump movement that presses lubricating grease into the lubricating bores.