Caulking gun with means to prevent rotation of compound cartridg

Details Caulking gun with means to prevent rotation of compound cartridg Caulking gun with means to prevent rotation of compound cartridg

1986-01-13

1987-11-17

Skaggs, H. Grant

Dispensing

With discharge assistant

Container with follower

222327, B67D 542

Patent

active

047068531

ABSTRACT:
A caulking gun adapted to receive a tube-like cartridge of compound, wherein the cartridge has a piston in one end which expels compound from a dispensing nozzle as the piston is moved forward in the cartridge towards the dispensing nozzle. The gun includes a cartridge holder, a handle attached to the cartridge holder, and a trigger cooperating with the handle to urge a stem fixed against rotational movement relative to said cartridge holder and a disk fixed on the stem against rotational movement relative to the stem against the piston of the cartridge to expel compound from the discharge nozzle. One outwardly projecting prong is eccentrically positioned on the disk in contact relation with the piston of the cartridge for wedging into the contact surface of the piston without puncturing through the piston into the cartridge, whereby compound is prevented from leaking. The prong engages the piston to prevent rotation of the cartridge as compound is expelled in order to maintain the angle of articulation and to exert a positive pull on the piston and urge it rearwardly away from the dispensing nozzle as the stem is retracted from contact with the piston and before disengaging completely from the piston. This releases pressure on the piston and stops the flow of compound from the dispensing nozzle.

REFERENCES:
patent: 1637955 (1927-08-01), McLaughlin
patent: 2768768 (1956-10-01), Cornell et al.
patent: 2946331 (1980-07-01), Jungst et al.
patent: 3259130 (1966-07-01), Krauthamer

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