Patent ID: 6067854
Filing Date: 2000-05-30
Classification: G01F,H01H

Abstract:
Apparatus for sensing the level of a liquid in a tank, comprising:a float on the surface of said liquid, said float rising and falling with changes in the level of said liquid;first magnetic means carried on and moveable with the float;an electrical switch stationarily mounted in the area of said tank and actuatable to produce an electrical signal related to the level of liquid in said tank; andmeans for actuating said switch, said actuating means including second magnetic means disposed proximal to the path of movement of said float and responsive to the magnetic influence of said first magnetic means for applying an actuating force on said switch, said actuating means further includes mechanical latch means responsive to a first proximal encounter of said first and second magnetic means for latching and holding said switch in an actuated condition, and responsive to a second proximal encounter of said first and second magnetic means for unlatching and holding said switch in an un-actuated condition.