Structure of a sand blast gun

Details Structure of a sand blast gun Structure of a sand blast gun

1998-08-25

2000-08-22

Eley, Timothy V.

Abrading

Machine

Sandblast

451 90, B24C 300

Patent

active

061063770

ABSTRACT:
An improved structure of a sand blast gun includes a body, a guide tube accommodated in the body in a longitudinal direction, and a stop valve disposed in a radial direction. The stop valve has two guide posts. A shaft having a sleeve fitted on the outside straddles over upper portions of the guide posts. The guide posts are respectively fitted with pressure springs and inserted into holes of the body. An urging top end is firstly fixed on a center of a securing plate that is screwably mounted at the bottom side of the guide posts such that the urging top end extends into a radial round hole of the body to urge against a catgut tube to close the passage. When a trigger of the sand blast gun is pulled, it pushes the shaft and the guide posts to cause the pressure spring to retract to thereby cause the securing plate on the bottom of the guide posts and the urging top end to displace outwardly. The urging top end then disengages from the catgut tube to open the sand blast passage to achieve control of operation of sand blasting.

REFERENCES:
patent: 2107084 (1938-02-01), Pletcher
patent: 4941298 (1990-07-01), Fernwood et al.
patent: 5605496 (1997-02-01), Pickard

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