Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1990-07-13
1991-09-03
Crosland, Donnie L.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
340438, 340623, 73447, 73453, 73440, B60Q 100
Patent
active
050458361
ABSTRACT:
A vehicle anti-freeze monitor for monitoring the capability of the vehicle's coolant mixture in the cooling system of the vehicle to resist freezing. The monitor includes a light emitting diode, a reed switch for coupling the indicator to a source of electricity and for selectively activating and deactivating the indicator. Also included is a float for submersion into the vehicle's coolant mixture. The float includes a buoyant body and a magnet which activates the reed switch when the vehicle's coolant mixture is in a safe condition against freezing and deactivates the reed switch when the coolant mixture is in an unsafe freezable condition.
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Crosland Donnie L.
Swarthout Brent A.
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