Chemistry: electrical current producing apparatus – product – and – With pressure equalizing means for liquid immersion operation
Patent
1981-11-05
1983-08-16
Lefevour, Charles F.
Chemistry: electrical current producing apparatus, product, and
With pressure equalizing means for liquid immersion operation
429 49, 429 63, 429 70, 429 81, H01M 804
Patent
active
043992005
ABSTRACT:
In a system for controlling the flow rates in a storage battery of the type having at least one pump driven at a controlled speed by a motor driven at a speed determined by the average applied voltage and the load experienced by the pump, which system includes a circuit for applying an average voltage to the motor and means for generating a reference signal for controlling the general magnitude of the average applied voltage to drive the pump at the desired speed, there is provided an improvement. This improvement comprises means for supplying a main voltage level of a given magnitude, means for alternately switching the main voltage level across the pump driving motor wherein the switching means has a first condition with the voltage level applied across the motor and a second condition with the voltage level isolated from the motor, and signal generating means normally responsive to a voltage control signal controlled at least in part by the reference signal for creating a signal to change the relative time the switching means is in the first condition compared to the time the switching means is in the second condition.
REFERENCES:
patent: 3850695 (1974-11-01), Keller et al.
patent: 3935024 (1976-01-01), Symons
patent: 3996064 (1976-12-01), Thaller
patent: 4098959 (1978-07-01), Fanciullo
patent: 4287267 (1981-09-01), Whittlesey
patent: 4304823 (1981-12-01), Lemelson
Energy Development Associates, Inc.
LeFevour Charles F.
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