Dispensing – With discharge assistant – Insertable cartridge or removable container
Patent
1981-03-30
1983-06-28
Rolla, Joseph J.
Dispensing
With discharge assistant
Insertable cartridge or removable container
222 83, 222 835, 222391, 83580, 74540, B67D 542
Patent
active
043901158
ABSTRACT:
Discloses a caulking gun apparatus including a caulking cartridge housing, a handle with a trigger attached to the housing, and a pawl system to ratchet a plunger rod and displacement head into the inlet of a caulking cartridge. A plunger rod release mechanism is provided which can be actuated by the operator while the caulking gun is held and operated with one hand. Mounted within the housing is a piercing blade and sealing mechanism for piercing the closure diaphram of the caulking cartridge and thereafter stopping the caulking cartridge to seal the caulking cartridge between the times that the caulking compound is extruded from the cartridge through its nozzle. A plurality of holes of different size as defined in the handle of the gun with the holes being oval or elliptical in shape and having their edges bevelled as to form a sharp edge on the inner side of the handle to act as a shear with a cooperating edge of the trigger when depressed into the handle. Such shearing holes are oval shaped so as to receive and fit the round plastic caulking cartridge nozzle at a visually appropriate acute angle whereby the tip of the sealed nozzle can be inserted into a hole of appropriate size and the trigger depressed into the handle to shear the tip off to a proper outlet size and angle. The shearing edges of the nozzle holes are preferably hardened such as by flame hardening.
REFERENCES:
patent: 1421317 (1922-06-01), Snell et al.
patent: 2801775 (1957-08-01), Slobin
patent: 3105614 (1963-10-01), Sherbondy
patent: 3406875 (1968-10-01), Park
patent: 4135644 (1979-01-01), Pacetti
patent: 4146152 (1979-03-01), Ogawa et al.
patent: 4213546 (1980-07-01), Massey
Koniarek Jan
Peppers James M.
Rolla Joseph J.
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