Measuring and testing – Liquid level or depth gauge – Hydrostatic pressure type
Patent
1989-07-05
1991-02-12
Yasich, Daniel M.
Measuring and testing
Liquid level or depth gauge
Hydrostatic pressure type
33717, 33722, 7386462, G01F 2300, G01L 716
Patent
active
049914340
ABSTRACT:
Apparatus for determining whether a liquid in a liquid reservoir is above a certain level includes suction means operable by a user to create suction when the user desires to determine if the liquid in the reservoir is above the certain level, a conduit extending from the suction means and adapted to be positioned in the reservoir so that a passage in the conduit which communicates with the suction created by the suction means opens into the reservoir above the liquid therein when the liquid is below the certain level, and indicator for indicating whether or not the passage in the conduit is opening into the reservoir above the liquid therein. The indication that the liquid is above the certain level is given by either observing that liquid is being drawn into the passage or that the passage opening is closed. This may be done by observing the liquid itself in the passage or an indicating reservoir, or observing the operation of the suction means which given an indication of flow into the passage. The apparatus may be used to replace the normal dipstick used to measure liquid levels, such as oil level in an automobile engine.
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Chain Tool Company, Inc.
Yasich Daniel M.
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