Patent ID: 7140797

Claim:
A multi-cartridge powered dispenser comprising: a) a frame including i) base and top cartridge supports and coupling elements extending therebetween; ii) wheels on the base of the frame for movement of the dispenser; iii) a handle for moving the dispenser; iv) a piston/cylinder supported on said frame b) at east three product containing cartridges each having a shuttle at one end and a discharge opening at the other end, said cartridges being clamped between said base and top supports, said piston having push rods coupled thereto and extending through said base support to move said shuttles in said cartridges; c) a first pressurized fluid supply conduit connected to said piston/cylinder; d) a valve in said fluid supply conduit; e) at least one discharge cannula communicating with said outlet of at least one of said cartridges; f) a handpiece for applying the contents of said cartridges to a work surface; g) a first discharge conduit between said discharge cannula and said handpiece; and h) control means on said handpiece for opening and closing said valve in said fluid supply conduit to control the supply of fluid to said piston/cylinder and thereby the discharge of the contents of said cartridges and the flow of the contents to said handpiece.