Invention Grant
- Patent Title: Chisel
- Patent Title (中): 凿
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Application No.: US10189798Application Date: 2002-07-08
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Publication No.: US08215415B2Publication Date: 2012-07-10
- Inventor: Marco Lang , Franc Koljaka , Friedmar Dresig , Thomas Bernhardt
- Applicant: Marco Lang , Franc Koljaka , Friedmar Dresig , Thomas Bernhardt
- Applicant Address: DE Ravensburg IT Bergamo
- Assignee: Hawera Probst GmbH,Aresi S.P.A.
- Current Assignee: Hawera Probst GmbH,Aresi S.P.A.
- Current Assignee Address: DE Ravensburg IT Bergamo
- Agency: Venable LLP
- Agent Robert Kinberg; Lars H. Genieser
- Priority: DE10132292 20010706; DE10208628 20020228
- Main IPC: B25D15/00
- IPC: B25D15/00 ; B28D1/26

Abstract:
A tool bit for a chisel or a hammer drill, in particular, a insertable chisel or insertable drill for power-driven drill and chisel hammers, has an insertion end, with a chisel shank or drill shank, and a chisel head or drill shank located opposite the insertion end. The diameter of the shank increases in the direction of the chisel head at least once from a first, small diameter to a second, large diameter and decreases again from this to a small diameter or forms at least one bead.
Public/Granted literature
- US20030026669A1 Chisel Public/Granted day:2003-02-06
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