Patent ID: 6435373
Filing Date: 2002-08-20
Classification: B05C,B65D

Abstract:
A caulking gun used in combination with a cartridge comprising:the caulking gun having a tubular-shaped cartridge holder with a front wall at a front portion of the cartridge holder for retaining a cartridge provided with an opening for projecting a cartridge nozzle therethrough, and a ratchet mechanism and ratchetable piston provided at a rear portion of the cartridge holder for exerting ratchetable pressure on a cartridge loaded therein; a rigid tubular sleeve member for holding a collapsible cartridge loaded with sealant material therein adapted to be inserted with the collapsible cartridge in said cartridge holder of the caulking gun; and a collapsible cartridge inserted in and constrained by the tubular sleeve member having a nozzle end, a hollow tubular body joined to the nozzle end having walls made of a semi-rigid deformable plastic material, and a rigid push-in end sealed to rear walls of the tubular body at a rear end opposite the nozzle end, wherein said rigid push-in end has an arrow shape that pushes on the rear walls of the tubular body to cause collapsing first along a centerline of the tubular body then outwardly to the sides of the tubular body, thereby readily pushing the tubular body walls ahead of it to a collapsed condition to squeeze sealant material out through the nozzle end when the push-in end is pushed by the piston of the caulking gun.