초록 ▼

A liquid pump and controller with separate pump activation and deactivation mechanisms that are both closed detector devices is provided. The pump activation mechanism includes a float device that activates a pump motor when water within a housing of the pump reaches a high water level. The pump dea

A liquid pump and controller with separate pump activation and deactivation mechanisms that are both closed detector devices is provided. The pump activation mechanism includes a float device that activates a pump motor when water within a housing of the pump reaches a high water level. The pump deactivation mechanism includes a sensor that detects the load on the pump motor and deactivates it when the sensed load indicates that the water within the pump housing has reached a low water level.

대표청구항 ▼

1. A pump comprising:a pump housing including a first portion having a port and a second portion having a plurality of openings formed therein, said plurality of openings being adapted to allow liquid to enter said housing, said pump housing including a float compartment disposed therein; a motor di

1. A pump comprising:a pump housing including a first portion having a port and a second portion having a plurality of openings formed therein, said plurality of openings being adapted to allow liquid to enter said housing, said pump housing including a float compartment disposed therein; a motor disposed within said housing, said motor adapted to cause the liquid present in said housing to be discharged through said port; an activator electrically connected to said motor, said activator activating said motor when the liquid present in said housing reaches a first level, said activator comprising a float assembly within a float compartment and a position sensor switch in a location completely isolated from any liquid entering said pump housing, said switch being electrically connected to said motor, said float assembly using a first detection criteria to detect when the liquid reaches the first level to close said switch to activate said motor; and a deactivator electrically connected to said motor, said deactivator deactivating said motor when the liquid present in said housing reaches a second level, said deactivator using a second detection criteria to detect when the liquid reaches the second level, wherein said first detection criteria is different from said second detection criteria.