Dispensing device in the form of a caulking gun

Details Dispensing device in the form of a caulking gun Dispensing device in the form of a caulking gun

1984-03-22

1986-02-18

Rolla, Joseph J.

Dispensing

With discharge assistant

Insertable cartridge or removable container

222389, 604 70, 604143, B65D 8854

Patent

active

045708320

ABSTRACT:
A dispensing device in the form of a caulking gun is adapted to receive interchangeable cartridges. In addition, it comprises means introducing compressed air at activation into the cartridge from behind so as pneumatically to press a piston plate present therein and consequently the material present in the cartridge forward towards the discharge nozzle of the cartridge. In order to permit an easy interchanging of the cartridge as well as to obtain a very simple caulking gun, the dispensing device comprises an open supporting means and a sealing piston. The sealing piston is adapted to be sealingly pressed against the rim of the cartridge from behind so as to close said rim when the cartridge is pressed against the front end of the supporting means. At the same time the caulking gun comprises a passage extending through the sealing piston so as to permit compressed air to enter at the rear end of the cartridge at activation.

REFERENCES:
patent: 1606034 (1926-11-01), MacGregor
patent: 3319839 (1967-05-01), Cox
patent: 4376498 (1983-03-01), Davis, Jr.
patent: 4453651 (1984-06-01), Braithwaite et al.

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