US 7,073,691 B2 · Caulking gun

Abstract

A caulking gun for dispensing caulking material from a standard caulk tube. The gun is fabricated in three basic parts; a trigger assembly, a trigger housing and a barrel cage for holding the tube. The facing portions of the barrel cage and trigger housing is provided with a mating configuration which enables the gun to be easily assembled for use and easily disassembled for storage in a toolbox. A novel drip/no drip feature is provided wherein a cam actuator conveniently positioned on the trigger housing enables an operator to select between no drip operation or drip type operation when caulking material and application requirements warrant such. A thumb release mechanism is provided on the rear of the trigger housing so the operator can release the driving rod for insertion of another tube of caulk when the unit has been placed in the drip position.

Claims15

Dependent claims

A caulking gun for dispensing caulking material enclosed within a tube having a nozzle, said caulking gun comprising:

a rotatable barrel cage for holding the caulking tube wherein said rotatable barrel cage has an inner inverted U-shaped lip;
a trigger housing releasably attached to said barrel cage wherein said trigger housing has a circumferential outwardly extending lip for engaging said U-shaped lip of said rotatable barrel cage;
a trigger assembly pivotably attached to said trigger housing;
a pistol rod extending longitudinally positioned within said barrel cage and attached said trigger housing;
a push plate releasably attached to said piston rod that is used to extrude caulking material out of said tube by having said push plate move within the tube of caulk when said trigger assembly is squeezed and wherein when said plush plate is removed from said piston rod, said barrel cage can be disengaged from said trigger housing and said caulking gun thereby is more easily stowable than when said carrel cage is attached to said trigger housing.

2 more elements

A caulking gun for dispensing caulking material enclosed within a tube having a nozzle, said caulking gun comprising:

a barrel cage for holding the caulking tube wherein said rotatable barrel cage has an inner inverted U-shaped lip;
a trigger housing attached to said barrel cage wherein said trigger housing has a circumferential outwardly extending lip for engaging said U-shaped lip of said rotatable barrel cage;
a trigger assembly pivotably attached to said housing;
a piston rod extending longitudinally positioned within said barrel care and attached said trigger housing;
a push plate attached to said piston rod;
drive means, connected to said trigger assembly, for extruding caulking material out of said tube by having said push plate move within the tube of caulk when said trigger assembly is squeezed;
forward biasing means for preventing piston rod from moving back more than is required to relieve the pressure in the caulk tube when said trigger assembly is released, thus providing “no drip” operation;
dog means for preventing piston rod from moving back when trigger assembly said is released, thus providing “drip” operation;
actuator means for selecting between “no drip” operation and “drip” operation wherein said actuator means disengages dog means.

6 more elements

A caulking gun for dispensing caulking material enclosed within a tube having a nozzle, said caulking gun comprising:

a rotatable barrel cage for holding the caulking tube wherein said rotatable barrel cage has an inner inverted U-shaped lip;
a trigger housing releasably attached to said barrel cage wherein said trigger housing has a circumferential outwardly extending lip for engaging said U-shaped lip of said rotatable barrel cage;
a trigger assembly pivotably attached to said trigger housing;
a piston rod extending longitudinally positioned within said barrel care and attached said trigger housing;
a push plate releasably attached to said piston rod such that when said plush plate is removed from said piston rod, said barrel cage can be disengaged from said trigger housing and said caulking gun thereby is more easily stowable than when said carrel cage is attached to said trigger housing;
drive means, connected to said trigger assembly, for extruding caulking material out of said tube by having said push plate move within the tube of caulk when said trigger assembly is squeezed;
forward biasing means for preventing piston rod from moving back more than is required to relieve the pressure in the caulk tube when said trigger assembly is released, thus providing “no drip” operation;
dog means for preventing piston rod from moving back when said trigger assembly is released, thus providing “drip” operation;
actuator means for selecting between “no drip” operation and “drip” operation wherein said actuator means disengages dog means.

6 more elements

Dependencies are inferred from the claim text.

Caulking gun

Life of this patent

Caulking gun

Life of this patent

Abstract

Claims15