Liquid filling device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Dec 26, 2000
Grant Date -
N/A
app pub date -
Sep 8, 1999
filing date -
Mar 13, 1997
priority date (Note) -
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status (Latency Note)
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Abstract
A liquid filling device for watering batteries comprises a body having first and second water ports that extend through the body and connect within it to first and second water passages that are independent of one another. A trap is disposed the device at a position below the first and second water passages. A bell chamber is disposed at an outlet of the trap and includes an open end. Water passes through the device via a one of the first or second water passages, through the trap, through the bell chamber and into a battery cell. The device traps a volume of air therein and pressurizes the trapped air, as the electrolyte level in the cell rises to a determined level, to an amount at least equal to the head pressure of water in the device, thereby terminating further water flow into the cell. The device includes a gas vent for releasing gas pressure from the cell to the atmosphere or to collection for further treatment. The device is operated by imposing a pressure differential, by either pressure or vacuum conditions, between water inlet and outlet passages of sufficient amount to effect water flow into and through the device.
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