Measuring and testing – Liquid level or depth gauge – Float
Patent
1992-11-25
1993-11-09
Yasich, Daniel M.
Measuring and testing
Liquid level or depth gauge
Float
G01F 2360
Patent
active
052592456
ABSTRACT:
A fluid level measuring device with an armless float adapted for an irregularly shaped gas tank of a vehicle is equipped with an elongaged mounting pole which extends to the bottom of a gas tank at one end and is fixed to the top of the tank at the other. The mounting pole is provided with a receiving groove at the front side thereof into which a PC board is and a float is slidably moved up along the mounting pole due to the buoyancy of the fluid in the tank and down due to its own weight. A metallic contact member attached to the float and one of its copper points is slidably mounted in abutment against one elongated conductive circuit path of the PC board so as to constantly form a closed circuit via bridged resistors and the elongated conductive circuit path and the grounded mounting pole. As a result of the positional variation of the float in correspondence to the level of the fluid of the tank, the resistance of the closed circuit is varied, causing the pointer of a level meter to move accordingly.
REFERENCES:
patent: 4702107 (1987-10-01), Guerrini et al.
patent: 4813282 (1989-03-01), Maggia
patent: 4920798 (1990-05-01), Weaver
patent: 4976146 (1990-12-01), Senghaas
patent: 5020366 (1991-06-01), Elfverson et al.
patent: 5146785 (1992-09-01), Riley
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