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US 6,786,365 B2Granted
Liquid supply apparatus
AssigneeYong-Nyun Kim
InventorYong-Nyun Kim
Life of this patent
Estimating the term…
Abstract
A liquid supply apparatus (10) is provided. The liquid supply apparatus (10) has a cylinder (12), a piston (14) and a piston pushing apparatus. The cylinder (12) is provided with a head portion (20) with outlet (24). The cylinder (12) has a rear end opened. The piston (14) is inserted into the cylinder (12). The piston moves along the longitudinal direction of the cylinder (12) so as to inject liquid contained in the cylinder (12). The piston pushing apparatus (16) pushes the piston (14). The piston pushing apparatus (16) has a moving member contacting the rear portion of the piston (14), a electric motor and a movement transferring mechanism. The movement transferring mechanism converts the rotation of the motor into the linear movement of the moving member.
Claims29
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 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 liquid material configured to be used to generate the gas, and
- a gas separating structure configured to separate the generated gas from the liquid, the gas separating structure comprising a liquid-impermeable-but-gas-permeable sheet in contact with the liquid material;
- and
- wherein the piston is configured to move toward the head portion when the gas is supplied to the gas compartment.
4 more elements
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 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;
- wherein the piston is configured to move toward the head portion when the gas is supplied to the gas compartment;
- and
- wherein the gas supply apparatus comprises:
- a first material,
- a second material,
- a breakable partition isolating the first and second materials from each other,
- a reaction vessel where the first and second materials react with each other when the partition is broken,
- a partition breaker configured to break the breakable partition so as to let the first and second material contact each other in the reaction vessel, and
- a gas collecting structure comprising a liquid-impermeable-but-gas-permeable sheet arranged to contact the liquid.
9 more elements
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 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;
- wherein the piston is configured to move toward the head portion when the eas is supplied to the gas compartment;
- and
- wherein the gas supply apparatus comprises:
- a first material,
- a second material,
- a breakable partition isolating the first and second materials from each other,
- a reaction vessel where the first and second materials react with each other when the partition is broken,
- a partition breaker configured to break the breakable partition so as to let the first and second material contact each other in the reaction vessel, and
- a gas pressure regulator configured to control or regulate the pressure of the gas supplied into the gas compartment.
9 more elements
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 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;
- a tube connected to the liquid-flow opening and in fluid communication with the liquid compartment;
- a cap configured to cover a distal end of the tube, the cap having a through-hole in fluid communication with the tube, the cap further comprising a gas-permeable-but-liquid-impermeable material located between the through hole and the distal end of the placed and configured to allow passage of a gas from the tube through the through-hole while preventing passage of a liquid through the through-hole;
- wherein the piston is configured to move toward the head portion when the gas is supplied to the gas compartment.
3 more elements
A cap for covering a liquid supply tube, comprising:
- a cap body configured to cover an end of a liquid supply tube;
- a through-hole formed on the cap body, the through-hole being in fluid communication with the liquid supply tube;
- and
- a gas-permeable-but-liquid-impermeable material configured to allow passage of a gas from the tube through the through-hole while preventing passage of a liquid through the through-hole.
1 more element
Dependencies are inferred from the claim text.