Caulk gun

Details Caulk gun Caulk gun

1997-08-01

1999-03-30

Bomberg, Kenneth

Dispensing

With discharge assistant

Container with follower

741415, 74169, B67D 542

Patent

active

058877657

ABSTRACT:
A caulk gun is provided with a forward-biasing mechanism to maintain contact between the caulk tube and the piston rod. The forward biasing mechanism is of simple construction and is piggy-backed to the trigger housing of the caulk gun. The operation of the forward-biasing mechanism relies on a friction grip which surrounds the piston rod. This friction grip is urged in the forward direction by a spring contained within the housing of the forward-biasing mechanism, and thereby biases the piston rod in the forward direction, while relieving the back pressure inside the caulk tube.

REFERENCES:
patent: 3069053 (1962-12-01), Nilsson
patent: 3140078 (1964-07-01), Krahe et al.
patent: 3189226 (1965-06-01), Sherbondy
patent: 4009804 (1977-03-01), Costa et al.
patent: 4033484 (1977-07-01), Ornsteen
patent: 4081112 (1978-03-01), Chang
patent: 4461407 (1984-07-01), Finnegan
patent: 4572409 (1986-02-01), Finnegan
patent: 5529225 (1996-06-01), Chang
patent: 5653363 (1997-08-01), Chang
patent: 5788126 (1998-08-01), Chang

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