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:
Sep. 20, 1977
Filed:
Nov. 09, 1976
Richard Heinen, New York, NY (US);
Georg Rieger, Unterpfaffenhofen, DT;
Dyckerhoff & Widmann Aktiengesellschaft, Munich, DT;
Abstract
The tool or device of the invention operates on an anchoring rod of the type which has spiral threads which threads only extend around a portion of the circumference thereof. Such an anchoring rod, when used to secure ceilings in mines, for example, has to be screwed into anchoring position and then have a nut screwed in the free end thereof to secure it against a steel plate applied against the wall of the ceiling. The device of the invention is in the form of a sleeve having an aperture at one end adapted to receive the nut to be applied and a means at the other end to connect to a torque applying device. Back of the nut receiving aperture, means are provided in the sleeve device which can, optionally, cause the rod, the end of which extends through the nut, to rotate with the sleeve, or to remain stationary while the nut is screwed thereon, whereby the insertion of the rods into the bore holes and the tightening of the nut thereon, can be accomplished rapidly with only one fitting of the tool thereon.