Patent ID: 8087549
Filing Date: 2012-01-03
Classification: G01F

Abstract:
1. A liquid supply apparatus comprising: a liquid holding portion for holding a liquid to be pushed out to the exterior by pressurized gas; a liquid pouring section for pouring a predetermined amount of liquid into an intermediate portion of said liquid holding portion, the liquid pouring section comprising a supply passageway connected to said liquid holding portion, a syringe for pouring the liquid into said liquid holding portion via the supply passageway, and a drive section for controlling an amount of movement of a syringe piston of the syringe; a switching device provided at the supply passageway, that switches a connecting side of the syringe from the liquid holding portion to a supply source of the liquid a liquid discharge portion which comprises a thin pipe smaller in flow passage cross-sectional area than said liquid holding portion, and is connected to one end of said liquid holding portion; a liquid storing portion which is larger in flow passage cross-sectional area than said liquid holding portion, and is connected to the other end of said liquid holding portion; and a gas feed section for feeding the pressurized gas into said liquid storing portion.