Caulking gun with tip cutter mechanism

摘要

A caulking gun may have a tip cutter mechanism that is supported to the body of the caulking gun and that has a blade with a cutting edge. When the dispensing tip of a caulk tube is properly positioned with respect to the body, the blade may be moved with respect to the body to contact the dispensing tip with the cutting edge and cut the dispensing tip of the caulk tube to adjust the amount of caulk material that is dispensed.

主权项

1. A caulking gun for use with an associated caulk tube comprising a canister and a dispensing tip through which caulk material in the canister is dispensed, the caulking gun comprising:
a body having a tube housing for housing the associated caulk tube while caulk material is dispensed; a piston assembly that is supported to the body and that comprises: (1) a piston rod; and, (2) a piston attached to the piston rod; a trigger mechanism that is supported to the body and that comprises: (1) a trigger that: (a) comprises a contact surface; and, (b) is movable with respect to the body; and (2) an advance plate that grips the piston rod; a tip cutter mechanism including a first plate fixedly mounted to the body and having at least one tip reception opening, and a second plate movably supported to the body and having at least two tip reception openings such that the second plate may be moved to align any one tip reception opening with the tip reception opening of the first plate, comprising a blade having a cutting edge; wherein the trigger mechanism is operable by moving the trigger with respect to the body to contact the advance plate with the second contact surface of the control cam to move the piston rod and the piston to cause the caulk material to dispense through the dispensing tip; and, wherein when the dispensing tip is positioned properly with respect to the blade, the blade is movable with respect to the body, while being supported to the body, to contact the dispensing tip with the cutting edge and cut the dispensing tip of the associated caulk tube to adjust the amount of caulk material that is dispensed.