Patent ID: 8414277
Filing Date: 2013-04-09
Classification: F04B

Abstract:
1. A barrel style pump, comprising: a tubular barrel comprising a first end, a second end, and a barrel axis extending between said first end of said tubular barrel and said second end of said tubular barrel; a manual pump handle assembly disposed on the first end of said tubular barrel, said manual pump handle assembly comprising a hand grip, a piston, and connecting rod; wherein said hand grip is threadedly formed to axially attach a first compressed gas cartridge thereto; a dispensing head comprising an outlet port, wherein said dispensing head is disposed on the second end of said tubular barrel, wherein said dispensing head is threadedly formed to axially attach a second compressed gas cartridge thereto; a lance housing disposed within said dispensing head, said lance housing formed to include an inner bore, said lance housing comprising a puncture lance disposed concentrically within said inner bore, a lance seal, and a lance gas path fluidly connecting said lance housing and said dispensing head; a first one-way valve disposed within said dispensing head between said lance housing and said outlet port; a second one-way valve disposed within said dispensing head between said second end of said tubular barrel and said outlet port; wherein the first and second one-way valves are coaxial with the barrel axis.