AC power and control for electro-magnet lifts

Details AC power and control for electro-magnet lifts AC power and control for electro-magnet lifts

1992-05-14

1994-06-28

Gaffin, Jeffrey A.

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

Systems for magnetizing, demagnetizing, or controlling the...

307125, 361189, H01H 4700

Patent

active

053252608

ABSTRACT:
An AC powered electro-magnet lift is provided with AC rectification and control requiring low maintenance. The control system is light and relatively small, and quiet with, very little noise, minimal sparking between contacts, no extremely high voltage and contactors operational for hundreds of thousands if not millions of times. A mercury switch control of system relays has low and predictable contact resistance. This control of an electro-magnet handles a variety of loads with assured consistent switching with the system moisture resistant and having high dielectric coefficients where required.

REFERENCES:
patent: 4264887 (1981-04-01), Barrett
patent: 4354149 (1982-10-01), Armond et al.
patent: 4739969 (1988-04-01), Eckersley et al.

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