Electricity: circuit makers and breakers – Fluid pressure – Diaphragm
Reexamination Certificate
2007-11-19
2010-12-21
Figueroa, Felix O (Department: 2833)
Electricity: circuit makers and breakers
Fluid pressure
Diaphragm
Reexamination Certificate
active
07855345
ABSTRACT:
The invention relates to a field adjustable pressure switch that incorporates a manually adjustable differential to set the pressure level for the trip point for the pressure switch used in conjunction with a submersible sump pump system requiring trip levels corresponding to the desired water level in the sump well for operation of the pump motor.
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Irwin Bill
Raymond Leung Wai Tat
Stevens Geoffrey M.
Stevens James E.
Femal Michael J.
Figueroa Felix O
McDonald Hopkins LLC
Stevens Pump Company
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