Electricity: electrical systems and devices – Safety and protection of systems and devices – Ground fault protection
Patent
1987-09-11
1988-12-13
Scott, J. R.
Electricity: electrical systems and devices
Safety and protection of systems and devices
Ground fault protection
361178, 34 97, 307118, 307325, 219363, H02H 316
Patent
active
047915196
ABSTRACT:
An immersion detection current interrupter circuit with an electric latch for use in small electrical appliances. A sensor wire is positioned within an appliance to sense current leakage when in contact with a conductive fluid. A relay or solenoid connected to the sensor is positioned between the load leads in a latch circuit. When the sensor detects a leakage current, it causes a two-pole double-throw relay to latch, breaking the load lines beyond the relay. The relay will remain latched until the power cord is unplugged or reset by a switch which opens and closes the power lines. Once the component has latched, the maximum leakage current will be limited by the voltage drop across a diode.
REFERENCES:
patent: 4103319 (1978-07-01), Crain et al.
patent: 4270158 (1981-05-01), Gilardoni et al.
patent: 4345289 (1982-08-01), Howell
patent: 4464582 (1984-08-01), Aragaki et al.
patent: 4493975 (1985-01-01), Yamamoto
patent: 4550358 (1985-10-01), Crowley et al.
patent: 4687906 (1987-08-01), Fujishima et al.
Jennings Derek S.
North American Philips Corp.
Scott J. R.
LandOfFree
Shock protective circuit with electrical latch for small applian does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Shock protective circuit with electrical latch for small applian, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Shock protective circuit with electrical latch for small applian will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2199997