ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,447,497, issued on Oct. 21, was assigned to DRIPLESS INC. (Rohnert Park, Calif.).
"Caulking gun load sensitive variable ratio drive device" was invented by Larry Childs (Rohnert Park, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed systems provide cost effective dispensers of construction sealant, sausage tubes and other products having varied and even unknown levels of viscosity. A variable ratio drive cam pivots in response to the trigger tension caused by the viscosity of the material to be dispensed. In a relative high force mode, encountered with high viscosity payloads, the drive cam slightly pivots, keeping the distance traveled b...