Pneumatic hammer apparatus

Details Pneumatic hammer apparatus Pneumatic hammer apparatus

1991-06-21

1992-06-09

Larson, Lowell A.

Metal deforming

With means to drive tool

Including pneumatic- or fluid-actuated tool support

72705, B21D 112

Patent

active

051196670

ABSTRACT:
A pneumatic hammer for use on auto body surfaces to remove bumps and dents. The hammering force is developed by a piston that operates in an air cylinder; a compression spring drives the piston on its return stroke, such that the piston reciprocates rapidly back and forth to develop a hammering force. Interchangeable hammering elements are selectively retained on a non-circular head structure formed on the outer end of a piston rod. Ball detents extend from side faces of the head structure to lock the hammering elements onto the head structure.

REFERENCES:
patent: 885985 (1908-04-01), Dunlap
patent: 2346532 (1944-04-01), Borm
patent: 2526380 (1950-10-01), Mathews
patent: 2547224 (1951-04-01), MacGuire
patent: 2655901 (1953-10-01), Brown
patent: 4222294 (1980-09-01), Bippus

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