Pneumatic rescue tool
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United States of America Patent
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-
Jun 14, 1988
Issued Date -
N/A
app pub date -
Jul 20, 1987
filing date -
Aug 21, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A hand-held pneumatic rescue tool may be driven from a bottled compressed gas. The driving gas is used only for the blow-striking stroke, while a compression spring is used to provide a force for the return stroke that is independent of the pressure of the driving gas. Thus, the pressure of the driving gas may be varied to adjust the impact force of the blows struck, without adversely affecting operation of the tool. By appropriate valving, the tool will operate continuously and automatically so long as driving gas is supplied, as determined by the operator.
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