Fluid sprinkling – spraying – and diffusing – With system fluid relief or return to supply
Patent
1995-10-02
1996-12-10
Weldon, Kevin
Fluid sprinkling, spraying, and diffusing
With system fluid relief or return to supply
B05B 1100
Patent
active
055823491
ABSTRACT:
An improved hydroblasting gun having an on/off safety switch system. The on/off 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, two separate triggers are depressed displacing a predetermined volume in an actuator adjacent a shut-off valve. Until the actuator fully opens the shut-off 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.
REFERENCES:
patent: 2246348 (1941-06-01), Coffey
patent: 3762575 (1972-06-01), Hinrichs
patent: 3885739 (1975-05-01), Tuttle
patent: 4216911 (1980-08-01), Huperz et al.
patent: 4784330 (1988-11-01), Hammelmann
patent: 4802313 (1989-02-01), Smith
patent: 5199642 (1993-04-01), Rankin
patent: 5238191 (1993-08-01), Gaymon
patent: 5297777 (1994-03-01), Yie
patent: 5349982 (1994-09-01), Goldsmith
Heist 10M Double Deadman Control Assembly Drawings (8 pages) dated Circa 1990-1991.
C. H. Heist Corp
Weldon Kevin
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