Measuring and testing – Liquid level or depth gauge – Hydrostatic pressure type
Patent
1978-09-28
1980-03-11
Goldberg, Gerald
Measuring and testing
Liquid level or depth gauge
Hydrostatic pressure type
73293, G01F 2300
Patent
active
041921860
ABSTRACT:
A device enabling the operator of an internal combustion engine to visually inspect the quality and level of a fluid held within an associated fluid sump of the engine, transmission, or other adjacent fluid sump. The device operates directly from the vacuum system of the associated engine to selectively draw fluid from the sump upwardly into a viewing chamber. A lamp behind the chamber illuminates the fluid to facilitate visual inspection. If the fluid is below a prescribed level, no fluid will be drawn into the chamber, thereby indicating to the operator that the fluid level is below a specified minimum. The device may also be provided with a continuous monitoring system whereby fluid may be initially drawn into the visual inspection chamber and held there indefinitely or until the fluid drops below a prescribed level. When this happens, the continuous monitoring system may function to activate an annunciator giving warning to the engine operator that the fluid level is low.
REFERENCES:
patent: 2653477 (1953-09-01), Hoskins
patent: 2653564 (1953-09-01), Benefield
patent: 2720784 (1955-10-01), Kelly
patent: 2761316 (1956-09-01), Hoskins
patent: 3307397 (1967-03-01), Brown et al.
patent: 3466928 (1969-09-01), Kind
patent: 3782323 (1974-01-01), Jones
patent: 3834235 (1974-09-01), Bouton et al.
patent: 3834236 (1974-09-01), Durin
Goldberg Gerald
Roskos Joseph W.
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