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:
Mar. 22, 1988
Filed:
Jul. 31, 1986
Karl Henle, Reinbek, DE;
Korber AG, Hamburg, DE;
Abstract
Apparatus for coupling a rotary grinding tool to a rotary spindle has a long centering cone at the front end of the spindle for entry into a complementary conical hole in the main portion of a hub which separably holds the tool. The spindle transmits torque to the hub by means of two male torque transmitting elements provided on an axial extension of the hub and extending into complementary recesses provided on a ring-shaped member at the smaller-diameter end of the cone. The tool is held in a predetermined axial position by an end face of the extension which abuts an end face of the cone. A package of springs is installed in the cone to normally bias the extension of the hub axially of and away from the spindle so as to facilitate separation of the tool from the spindle by means of an automatic tool changer. The spring surrounds the shank of a screw or bolt which separably secures the extension of the hub to the cone of the spindle.