Fixing device for a shank chisel

Details Fixing device for a shank chisel Fixing device for a shank chisel

2005-03-10

2009-06-16

Kreck, John (Department: 3672)

Mining or in situ disintegration of hard material

Cutter tooth or tooth head

Rolling or rotatable-type bit mount

C299S085200

Reexamination Certificate

active

07547075

ABSTRACT:
A fixing device for a shank chisel including a base part to which a chisel holder is attached in a manner that enables it to be exchanged. The chisel holder has a chisel location for the shank chisel and has a supporting face on which the shank chisel can be supported. The chisel holder is coupled to the base part by a pivot bearing, and the chisel holder rests against a mating face of the base part. This invention provides a stress-optimized design for the above-mentioned arrangement. Thus, according to this invention, when the chisel holder is mounted, a contact area formed between the contact face and the mating face is located between a rotation axis or a rotation path of the pivot bearing and the supporting face.

REFERENCES:
patent: 4609227 (1986-09-01), Wild et al.
patent: 4915455 (1990-04-01), O'Neill et al.
patent: 5011229 (1991-04-01), O'Neill et al.
patent: 6619756 (2003-09-01), Holl et al.
patent: 295 10 913 (1995-11-01), None
patent: 297 11 566 (1997-09-01), None
patent: 0 200 037 (1986-11-01), None
patent: 0 129 883 (1989-03-01), None

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