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. 08, 1987
Filed:
Nov. 12, 1986
Anton Neumaier, Furstenfeldbruck, DE;
Hans-Jurgen Hoereth, Langenbach, DE;
Gerhard Rumpp, Inning, DE;
Hilti Aktiengesellschaft, , LI;
Abstract
A tool chuck for securing a tool bit in a drilling and cutting device includes a guide tube into which the tool bit is inserted and an adjusting sleeve displaceable relative to the guide tube. The guide tube has spaced first and second apertures with the first apertures holding locking members and the second apertures holding entrainment strips. The adjusting sleeve has alternating first and second pockets in its inside surface for receiving the locking members and the entrainment strips. With a tool bit having slots for both the locking members and the entrainment strip, both the locking members and entrainment strips can be displaced radially inwardly by the adjusting sleeve. If the tool bit has only slots for the locking members, the locking action can be effected with the entrainment strips maintained radially outwardly from the tool bit.