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. 16, 1987
Filed:
Jul. 29, 1986
Erwin Schiefer, Munich, DE;
Hilti Aktiengesellschaft, , US;
Abstract
An axially extending anchoring bush has a pair of opposite ends with a blind borehole extending axially into the bush from one end with the blind borehole arranged to receive and secure an anchor bolt. The bush has at least three generally axially extending slots ranging from the end opposite the end in which the blind borehole is formed toward the other end. Each slot is located in a different plane with the planes extending obliquely of the axis of the bush. Slots extend inwardly from the axially extending outer surface of the bush and intersect inwardly of the outer surface. The planes of the slots define the axially extending sides of a pyramidally shaped expansion member located inwardly of the slot.