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Liquid supply apparatus

  • US 20050056665A1
  • Filed: 09/03/2004
  • Published: 03/17/2005
  • Est. Priority Date: 07/22/2000
  • Status: Active Grant
First Claim
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1. A liquid supply apparatus, comprising:

  • a cylinder having an interior space, a head portion and a rear portion, the head portion having a liquid-flow opening;

    a piston located in the interior space of the cylinder and air-tightly partitioning the interior space into a liquid compartment on the side of the head portion and a gas compartment on the side of the rear portion;

    a gas supply apparatus configured to be coupled to the rear portion and to supply a gas into the gas compartment, the gas supply apparatus comprising;

    a solid material containing a gelatin, and a liquid material capable of generating the gas by a chemical reaction with the solid material; and

    wherein the piston is configured to move toward the head portion when the gas is supplied to the gas compartment.

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