Patent ID: 8343183

Claim:
An applicator comprising a housing and a nozzle assembly; wherein (i) the housing comprises a first barrel, comprising a first diameter, a first end, and a second end; a first internal chamber, comprising a proximal end and a distal end; a second internal chamber, comprising a proximal end and a distal end; a first floating plunger, located within the first barrel and under pressure movable therethrough, separating the first internal chamber from the second internal chamber, thereby forming the distal end of the first internal chamber, and the proximal end of the second internal chamber; a first plunger, comprising a first end and a second end, the second end of the first plunger is located at least partially within the first end of the first barrel and under pressure movable therethrough, thereby forming the proximal end of the first internal chamber; a first fluid bypass, located on the first barrel, external to the second internal chamber; a first piercable barrier, located at the distal end of the second internal chamber; a second barrel comprising a second diameter, a first end, and a second end; a third internal chamber, comprising a proximal end and a distal end; a fourth internal chamber, comprising a proximal end and a distal end; a second floating plunger, located within the second barrel and under pressure movable therethrough, separating the third internal chamber from the fourth internal chamber, thereby forming the distal end of the third internal chamber, and the proximal end of the fourth internal chamber; a second plunger, comprising a first end and a second end, the second end of the second plunger is located at least partially within the first end of the second barrel and under pressure movable therethrough, thereby forming the proximal end of the third internal chamber; a second fluid bypass, located on the second barrel, external to the fourth internal chamber; a second piercable barrier, located at the distal end of the fourth internal chamber; (ii) the nozzle assembly comprises a first inlet and a first piercer, wherein the first piercer is suitably positioned to pierce the first piercable barrier, and thereby connect the first inlet to the second internal chamber; and the a second inlet and a second piercer, wherein the second piercer is suitably positioned to pierce the second piercable barrier, and thereby connect the second inlet to the fourth internal chamber; a gas inlet; and an outlet in fluid communication with the first inlet, the second inlet and the gas inlet.