Safety switch system for hydroblasting operations
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United States of America Patent
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-
Jul 16, 1996
Grant Date -
N/A
app pub date -
May 25, 1995
filing date -
May 25, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An improved safety switch system for hydroblasting and hydrocutting operations. The switch system comprises at least two actuatable triggers each displacing a specified volume of incompressible fluid which, when coupled with a predetermined volume within an actuator, displaces a piston initiating a signal. In specific application within a hydroblasting gun, two separate triggers are depressed displacing a predetermined volume in an actuator adjacent a dump valve. Until the actuator fully closes the dump valve, hydroblasting operations may not begin. In this manner, the chances of accidental discharge through the depression of a single trigger are eliminated and preferred ergonomical characteristics are provided.
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