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. 25, 1996
Filed:
Dec. 09, 1994
Josef Obermeier, Peiting, DE;
Hilti Aktiengesellschaft, Schaan, LI;
Abstract
A tool bit for insertion into a tool bit chuck in a manually operated tool used for chiseling and/or percussion drilling has an axially extending chucking shank (1). The chucking shank has two axially extending rotary entrainment grooves (2) open at its end inserted into the chuck and located diametrically opposite one another. In addition, the chucking shank (1) has a locking groove (3) closed at its ends extending transversely of the axial direction and serving to lock the tool bit in the axial direction. Further, the chucking shank (1) has an axially extending groove (4) and an additional axially extending groove (5) for providing greater surface areas in entrainment side flanks for transmitting torque. The axially extending groove (4) extends through a part of the locking groove (3) so that an end face (3a) is formed extending transversely of the axial direction. The additional axially extending groove (5) is located diametrically opposite the locking groove (3) and has a larger transverse cross-sectional area than the rotary entrainment grooves (2).