H - Electricity – 01 – M
Patent
H - Electricity
01
M
320/2.5
H01M 10/44 (2006.01) F04B 49/04 (2006.01) G05D 9/12 (2006.01) H02J 7/00 (2006.01) H02J 7/10 (2006.01)
Patent
CA 2015140
Abstract of the Invention A sump pump (86) powered by a rechargeable battery (10) has a circuit for monitoring the battery voltage and con- trolling charging of the battery (10). Four compara- tors (16-22) monitor the battery (10) and control two flip flops (52, 74) one of which (52) operates the pump in cooperation with a float switch (54) and the other of which (74) turns the battery charging circuit (114, 116 on and off. The circuitry is arranged so that when the battery (10) is in its discharge cycle, the float switch (54) controls the pump (86) and the charging cir- cuit (114, 116) comes on only when the battery voltage is in a low range. In the charging cycle, the pump (86) is locked out in a low voltage range of the battery (10) and is controlled by the float switch (54) only in a high vol- tage range.
Gowling Lafleur Henderson Llp
Rival Company (the)
LandOfFree
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