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:
Jan. 01, 1985
Filed:
Jun. 25, 1982
Hilti Aktiengesellschaft, Schaan, LI;
Abstract
A tool holder for a drill capable of performing only rotary drilling or the combination of rotary and percussive drilling includes a tubular retainer member in which the shank of a tool can be inserted. Locking members mounted in the retainer member fit into recesses in the tool shank for holding it in the retainer member. During percussive drilling the locking members are axially displaceable in the recesses and the tool experiences a certain amount of axial play, however, when only rotary drilling is performed the locking members are held against axial displacement by stops so that the tool does not have any axial play. One stop forms a part of the retainer member and another stop is part of a member slidably displaceable relative to the retainer member.