Measuring and testing – Specific gravity or density of liquid or solid – Freely vertical reciprocable float with carried indicium
Patent
1979-09-27
1980-12-23
Woodiel, Donald O.
Measuring and testing
Specific gravity or density of liquid or solid
Freely vertical reciprocable float with carried indicium
73291, G01N 912
Patent
active
042402824
ABSTRACT:
There is disclosed a new and improved combined liquid level indicator and hydrometer which includes a light transmitting member having an indicating surface and a reflector surface. The reflector surface is adapted to be submerged in liquid for reflecting light to the indicating surface when the liquid is below a predetermined level. The liquid level indicator and hydrometer further includes a chamber aligned with and partially receiving the reflector surface. The chamber confines and positions a float member relative to the reflector surface for being viewed through the indicating surface responsive to the relative specific gravity of the liquid. A connection means carried by the chamber supports the light transmitting member and aligns the reflector surface with respect to the chamber. The chamber is initially formed in an open condition adapted for accepting the float member therein and is lockable thereafter for capturing the float member within the chamber. As a result, the chamber is arranged to receive the float member and confine the float member therein independently of the mounting of the light transmitting member to the chamber.
REFERENCES:
patent: 3597972 (1971-08-01), Ryder
patent: 3597973 (1971-08-01), Ryder
patent: 3893339 (1975-07-01), Melone
patent: 3915753 (1975-10-01), Melone
patent: 3954010 (1976-05-01), Hilblom
Buckman T. W.
Halvorsen J. R.
Illinois Tool Works Inc.
Woodiel Donald O.
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