Audible low-fuel alarm for propane fuel tank
Patent
·
OSTI ID:6000876
An audible low-fluid alarm is described for a fluid reservoir, comprising: (a) float means disposed within the fluid reservoir and movable within a predetermined range of travel responsive to the level of fluid within the reservoir; (b) a driver magnet rotatably mounted within the reservoir for rotational movement responsive to movement of the float means to define a magnetic field having a direction corresponding to a particular level of fluid within the reservoir; (c) sensor means exterior to the reservoir for detecting the magnetic field when in the direction corresponding to a particular level of liquid within the reservoir and outputting an electrical signal; (d) a driven magnet positioned in spaced-apart relation to the driver magnet and exterior to the reservoir, the sensor means being positioned between the driver magnet and the driven magnet in magnetic field sensing relation to both the magnets for providing a redundant sensing capability; and (e) audible alarm means connected to the sensor for activation by the electrical signal output from the sensor means.
- Assignee:
- NOV; NOV-87-077415; EDB-87-161711
- Patent Number(s):
- US 4688028
- OSTI ID:
- 6000876
- Country of Publication:
- United States
- Language:
- English
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