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:
Nov. 17, 1998
Filed:
May. 23, 1997
Hans Gschwend, Buchs, CH;
Martin Noser, Vaduz, LI;
Hilti Aktiengesellschaft, Schaan, LI;
Abstract
Fastening apparatus is formed of a drilling tool (3) for drilling an axially extending borehole in a receiving material. The drilling tool (3) has a cutting member (4) at its leading end and its trailing end (5) is arranged to be inserted into a chuck in a hand held drilling device capable of rotating the drilling tool and providing axially directed hammer-like blows. A tubular fastening element (2) has a bore extending between its leading and trailing ends and is arranged to be anchored in the borehole formed by the drilling tool. The diameter of the bore in the fastening element is greater than the outside diameter of a cutting circle formed by the cutting member (4) of the drilling tool (3). The drilling tool (3) extends axially through the bore in the fastening element so that its cutting member projects from one end of the fastening element and its trailing end extends outwardly from the trailing end of the fastening element. The drilling tool is rotated by the drilling device, however, the fastening element is not rotated. While the borehole is being drilled by the drilling tool, the trailing end of the fastening element is contacted by the drilling device, directing hammer-like blow against the trailing end of the fastening element so that simultaneously the fastening element is driven into the borehole being formed by the drilling tool. Due to its configuration, the fastening element is anchored in the borehole. The fastening apparatus carries out a method of directly mounting the fastening element in a borehole, as the borehole is formed by the fastening apparatus.