Apparatus for mixing and dispensing a multicomponent composition

A mixing and dispensing device for mixing together the components of a silicone composition packaged in the form of two or more individually stable components of substantially equal volume and viscosity each in a separate receptacle, and to dispense the mixed composition by a manual operation, the device comprising in combination:

• a housing having a bottom, side walls, and an open top;
• a unitary support means, said support means having a bottom, an essentially circular exterior side wall and an essentially circular interior side wall and being comprised generally of two separate chambers each having a bottom, an open top, a single perforation through said bottom and an open port having a top end and a bottom end, and essentially aligned with the single perforation in each said chamber and which leads into the interior of the housing via said bottom end of said port, said port terminating at an upper end of said port in a piercing component, said support means being slidably contained in said housing through the housing top, said support means having a bore through a center of said support in the sliding direction, essentially separating the two separate chambers;
• said support means having adapted thereto, a mixer rod, said mixer rod having an enlarged upper end;
• said mixer rod projecting through the center bore and slidable therein, said mixer rod terminating in a threaded end opposite the enlarged upper end;
• said mixer rod having attached to said threaded end, a mixing element, said mixing element being located beneath the support means, but contained in the housing;
• the bottom and side wall of the housing, in combination with the bottom and side walls of the support means forming a mixing chamber located beneath said support means and contained in said housing;
• a plunger means comprising two adjacent, parallel plungers each having a flanged top which plungers are rigidly connected to each other at their tops and are adaptable for insertion into the tops, respectively, of the two separate chambers of the support means, said plungers containing slidably therebetween, the mixer rod;
• the interior wall of said support means being elongated such that said support forms a nozzle for exiting composition after said composition is mixed, and after the mixer rod has been removed from the mixing element.