Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – Of ground fault indication
Patent
1995-06-09
2000-06-27
Ballato, Josie
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
Of ground fault indication
324510, G01R 3114
Patent
active
060811226
ABSTRACT:
A ground detection apparatus for sensing the presence of a malfunction within an electronic instrument. The apparatus includes an active electrical circuit for delivering electrical energy from a power source to an electrically-driven instrument. The apparatus further includes a plurality of return electrical circuits connected in series with the active electrical circuit distal the electrically-driven instrument. A transformer coil is positioned within the apparatus such that the active electrical circuit includes a first winding about the transformer coil and such that one of the return electrical circuits includes a second winding about the transformer coil. The first and second windings are configured such that no substantial net flux is created in transformer coil when the plurality of return electrical circuits are functioning properly. The apparatus further includes a sensing and signalling circuit capable of sensing the presence of a flux in the transformer coil and producing a signal in response thereto. The circuit which the signal triggers has the capacity to deactivate the power.
REFERENCES:
patent: 3976987 (1976-08-01), Anger
patent: 4368498 (1983-01-01), Neuhouser
patent: 4423569 (1984-01-01), Stern et al.
patent: 4437464 (1984-03-01), Crow
patent: 4793345 (1988-12-01), Lehmer
patent: 4857830 (1989-08-01), Matsuno
patent: 4970656 (1990-11-01), Lo et al.
patent: 5001649 (1991-03-01), Lo et al.
patent: 5230347 (1993-07-01), Weinstein et al.
Chirlian, Paul, Basic Network Theory, McGraw Hill, Inc., pp. 79, 37, 137, 1969.
Hayt and Kemmerly, Engineering Circuit Analysis, McGraw Hill, Inc., pp. 488 and 515, 1978.
Ballato Josie
Bausch & Lomb Surgical, Inc.
Kang Grant D.
Kobert Russell M.
LandOfFree
Electrical ground fault detection apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electrical ground fault detection apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electrical ground fault detection apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1787366