Point chisel

Details Point chisel Point chisel

2006-01-03

2006-01-03

Nguyen, George (Department: 3723)

Stone working

Tools

Impact

C125S042000, C125S040000

Reexamination Certificate

active

06981496

ABSTRACT:
A point chisel for use with a power tool includes an elongate stem (1) having, at its power tool side a shank (2) for securing the chisel in the power tool and, at its workpiece side, a useful region (3) having its outer diameter (H) tapering toward its workpiece end and having a cross-section (5) formed as a concave polygon by a plurality of axial grooves (4) extending radially toward a core diameter (K) that likewise tapers toward the workpiece side end of the useful region (3).

REFERENCES:
patent: 991830 (1911-05-01), Clements
patent: 1532468 (1925-04-01), Bawden
patent: 1551717 (1925-09-01), Watson
patent: 2629588 (1953-02-01), Neamand
patent: 4508181 (1985-04-01), Jenne
patent: 5145237 (1992-09-01), Schulz et al.
patent: 9914522 (2000-10-01), None
patent: 0156788 (1985-10-01), None

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