×

Method and apparatus for dispensing liquid with gas

  • US 5,845,716 A
  • Filed: 10/08/1997
  • Issued: 12/08/1998
  • Est. Priority Date: 10/08/1997
  • Status: Expired due to Fees
First Claim
Patent Images

1. An apparatus for discharging a liquid with a gas, said apparatus comprising:

  • a housing having a wall defining a piston chamber;

    a pedestal extending through at least a portion of said piston chamber and having a hollow barrel defining a mixing chamber;

    an annular piston arranged for movement in said piston chamber and extending between said housing wall and said barrel to provide a liquid chamber for holding the liquid when said piston is in a retracted position;

    at least one liquid passage connecting said liquid chamber and said mixing chamber;

    a gas chamber arranged in said housing to exert a pressure of the gas against a first face of said piston opposite to a second face for contacting the liquid in said liquid chamber;

    gas supply means for providing the gas in said gas chamber at said pressure, the area of said first piston face being larger than the area of said second piston face so that said gas pressure causes said piston to force the liquid out of said liquid chamber and into said mixing chamber through said liquid passage(s);

    means for conveying a portion of said gas into said mixing chamber for admixing with said liquid to form a gas and liquid mixture; and

    nozzle means for discharging said mixture from said mixing chamber to ambient pressure.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×