Electricity: electrical systems and devices – Control circuits for electromagnetic devices – Systems for magnetizing – demagnetizing – or controlling the...
Patent
1998-05-29
1999-05-18
Gaffin, Jeffrey
Electricity: electrical systems and devices
Control circuits for electromagnetic devices
Systems for magnetizing, demagnetizing, or controlling the...
361152, H01H47/00
Patent
active
059056240
ABSTRACT:
A magnet generator controller has a variable voltage array fabricated as a formation of receptacles mounted on a printed circuit board and interconnected via traces to pairs of taps off a transformer winding, and a plug-in connector that inserts in a selected receptacle to electrically couple one of various pairs of the taps to a field winding output in a mode of operation of the controller. This sets the voltage of the field winding output in the mode. The magnet generator controller also has a function select switch that allows selection of a run function in which the magnet generator controller sequences through plural modes (e.g., extra lift, lift, and drop modes) with associated field winding output settings in response to an operator control switch and timers. For use during set-up or fine-tuning, the function select switch also allows selection of exclusive mode functions in which the magnet generator controller operates indefinitely in an exclusive one of the modes.
REFERENCES:
patent: 2257361 (1941-09-01), Yorkey
patent: 3206652 (1965-09-01), Monroe
patent: 3774050 (1973-11-01), Littwin
patent: 4419618 (1983-12-01), Gretsch
patent: 5561330 (1996-10-01), Crook
patent: 5672954 (1997-09-01), Watanabe
patent: 5813712 (1998-09-01), Mozelt
International Electrical SyStems, Inc., product flier for "SofTouch Lifting Magnet Controller," 1 page (prior to 1998).
International Electrical Systems, Inc., product brochure for "SofTouch Magnet Lifting Controller," 9 pages (prior to 1998).
International Electrical Systems, Inc. manual, "SofTouch Installation and Service 5-240AC," 31 pages (1996).
Andreica Marius
Andreica Vasile
Gaffin Jeffrey
Huynh Kim
Northwest Magnet, Inc.
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