Visual and electronic battery hydrometer

Details Visual and electronic battery hydrometer Visual and electronic battery hydrometer

1975-04-25

1976-05-04

Queisser, Richard C.

Measuring and testing

Liquid level or depth gauge

With other measuring device

73293, 73447, G01N 918, G01F 2302

Patent

active

039540103

ABSTRACT:
A combined visual and electronic liquid indicator which may be used as a battery hydrometer is disclosed. An outer housing of a generally cylindrical shape receives a centrally located elongated light transmitting viewing rod. The lower portion of the rod extends into a channel at the lower end of the outer housing. A float is retained in the channel by a retaining cage. A second generally cylindrical inner member which fits over the rod and into the outer housing has a light sensor and a light detector secured at its lower end across diametrically opposite portions of the float channel, and the outer housing and the inner member are then sealed together.

REFERENCES:
patent: 3498141 (1970-03-01), Nelson et al.
patent: 3570311 (1971-03-01), Nelson
patent: 3597972 (1971-08-01), Ryder
patent: 3597973 (1971-08-01), Ryder
patent: 3777574 (1973-12-01), Brown et al.
patent: 3834235 (1974-09-01), Bouton et al.
patent: 3844171 (1974-10-01), Rodger
patent: 3893339 (1975-07-01), Melone

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