Abstract: A multiple barrel device for separate storage of viscous materials and for dispensing and intermixing same through a common static mixing element when pressure is applied. The device includes a multiple barrel syringe and a removable nozzle which is coupled to the syringe to form an interlock and a simultaneous pressure seal. The head of the syringe has a plurality of lugs which form bayonet grooves for engaging a complementary number of tong-like projections extending from the head of the nozzle. The head of the nozzle contains an annular bead which simultaneouly seals the interface at the intercoupling between the head of the syringe and the head of the nozzle.

Abstract: A dispensing mixer unit suited for use with a dispensing gun for mixing and dispensing at least two materials through a common mixing nozzle. The dispensing mixer comprises a tubular shell having at least two compartments for separately storing the materials to be intermixed and a common mixing nozzle, with the shell surrounding the common nixing nozzle in a concentric arrangement.

Abstract: A portable dispensing mixer for intermixing and dispensing two contiguous streams of material in a preset volumetric ratio. The dispensing mixer includes a syringe with two compartments, discharge assembly for discharging material from the syringe and a nozzle assembly for dispensing the discharged material from a common nozzle. The nozzle assembly comprises a common nozzle, a static mixing element with an arm extending from one end and a head. The head has an end stop for stopping rotation of the arm. The mixing element is caused to rotate by the ingress of material fed through the nozzle until the arm hits the end stop.