Invention Grant
- Patent Title: Chisel holder
- Patent Title (中): 凿子持有人
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Application No.: US13822720Application Date: 2011-12-02
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Publication No.: US09228434B2Publication Date: 2016-01-05
- Inventor: Thomas Lehnert , Karsten Buhr , Martin Lenz , Cyrus Barimani , Günter Hähn , Karl Kammerer , Markus Roth , Bernhard Diessner
- Applicant: Thomas Lehnert , Karsten Buhr , Martin Lenz , Cyrus Barimani , Günter Hähn , Karl Kammerer , Markus Roth , Bernhard Diessner
- Applicant Address: DE
- Assignee: Wirtgen GmbH
- Current Assignee: Wirtgen GmbH
- Current Assignee Address: DE
- Agency: Patterson Intellectual Property Law, PC
- Agent Lucian Wayne Beavers
- Priority: DE102010061019 20101203; DE102011051523 20110704
- International Application: PCT/EP2011/071587 WO 20111202
- International Announcement: WO2012/072785 WO 20120607
- Main IPC: E21C35/197
- IPC: E21C35/197 ; E21C35/18 ; E21C35/193
Abstract:
The subject matter of the invention is a bit holder for an earth working machine, in particular a road milling machine, having a support member onto which an insertion projection is indirectly or directly attached on an insertion projection side, the insertion projection comprising at least one convex abutment surface and one pressure surface. In a bit holder of this kind, working forces can be dissipated in stress-optimized fashion into an attached base part when provision is made that the insertion projection comprises two convex abutment surfaces that are arranged at a distance from one another.
Public/Granted literature
- US20130270891A1 Chisel Holder Public/Granted day:2013-10-17
Information query
