Armless fluid level measuring device having sealed housing tube and external float
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
Aug 15, 2002
app pub date -
Feb 13, 2001
filing date -
Feb 13, 2001
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
An improved armless fluid level measuring device has a sealed housing tube and an externally exposed float. The float is slidably attached to the outer surface of the housing tube in which an elongated PC board is sealedly confined so as to protect the PC board from being sabotaged or eroded by fluid chemicals. The float provided with a plurality of high density magnet is slidable on the external surface of the housing tube. The PC board has a circuitry made up of serially connected resistors that are serially bridged together by way of magnet-controlled switches which are activated as the float is variably positioned in place by the fluid confined in a container whereby the serially connected resistors can form a closed circuitry to indicate the level of the fluid in a container via readings on a display of a gauge. The housing tube is provided with a number of grooves on the outer surface thereof so as to prevent the float from getting stuck on the housing tube due to volume expansion of the float in operation.
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