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. 08, 1988
Filed:
Mar. 07, 1986
Gunther Hertel, Nuremberg, DE;
Karl G Hertel, Nuremberg, DE;
Hertel AG Werkzeuge & Hartstoffe, Furth, DE;
Abstract
A drive unit for a rotary tool, which unit includes a housing, a drive shaft mounted in the housing for transferring rotational drive force from a rotary drive to the tool, and a clamping mechanism mounted in the housing for generating a tool clamping movement along the axis of the drive shaft. The drive shaft is a hollow shaft, the clamping mechanism includes a pull rod mounted in the drive shaft and coaxially positioned relative to the drive shaft, the pull rod being mounted to be axially displaceable and fixed against rotation relative to the drive shaft, and the unit further includes a blocking device operative between the drive shaft and the housing for permitting the drive shaft to rotate relative to the housing only when the drive shaft is coupled to the rotary drive.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile