Patent ID: 6176398
Filing Date: 2001-01-23
Classification: B05C,G01F,Y10T

Abstract:
A drive assembly for a caulking gun, comprising:a frame having a downwardly extending handle;a piston rod slidably supported in said frame for dispensing caulking composition;a trigger pivoted to said frame and retractable against said handle;a gripping member encircling the piston rod forwardly of said trigger and engaged thereby when said trigger is retracted to grip and advance said piston rod;a first compression spring rearwardly biasing said first gripping member;a release lever encircling said piston rod and extending upwardly behind said frame to a pivot point;an effective trigger grip power device including a pushing member at one end for bearing against the gripping member to urge it into a vertical position, and a base section that is slidably channeled through the frame and extending rearwardly to said release lever for actuation thereby;whereby depression of said release lever drives said effective trigger grip power device to urge said gripping member into a substantially vertical position to eliminate trigger lock.