Patent ID: 7631790

Claim:
A nozzle for a caulking gun which includes: a) a hollow body portion having a wide inlet opening and a narrower outlet, opening that communicates directly with the inlet opening; b) a folded flange extending radially of the body portion adjacent the inlet of the nozzle and having a single first annular wall oriented transversely of a hollow body axis and circumferentially attached around the inlet opening; and a single second annular wall positioned in uniform spaced coaxial relation with the first wall and joined to the first wall by a bridging section, a normally expanded annular space being created in the interior of the hollow body between the first and second walls when the flange assumes a non-compressed shape; and c) the body portion and flange of the nozzle being formed as an single integral unit, wherein said folded flange is resiliently compressed in response to a caulking gun trigger actuation which pressurizes caulking material flowing through the nozzle; and the flange resumes an initial non-compressed shape when the trigger is released to expand the internal volume of the folded flange and to consequentially decrease pressure of the material in the nozzle thereby preventing secretion of material through the outlet opening of the nozzle upon trigger release.