Electrical transmission or interconnection systems – Switching systems – Condition responsive
Patent
1992-02-14
1993-12-21
Gaffin, Jeffrey A.
Electrical transmission or interconnection systems
Switching systems
Condition responsive
307 101, 307125, 307141, 307 107, H02H 700
Patent
active
052723860
ABSTRACT:
A programmable timer power switch unit with emergency override reset for use with a battery includes a power switch which receives power from the battery and switches the power to equipment. The unit also has a plurality of voltage detectors connected to the battery to detect a plurality of voltages and a vibration-pressure detector which detects any movement of the motor. There is a timer-control logic which is connected to the components and disables the power switch when voltage problems are detected. The unit further includes a programmable delay switch. The purpose of this switch is to allow the equipment to run during a pre-selected time. Also, there is an auto/manual override switch for overriding the timer-control logic and providing a short delay time prior to disconnecting the unit in order to protect any memory intensive electronic equipment from intermittent drop-outs such as when the engine is started.
REFERENCES:
patent: 4665370 (1987-05-01), Holland
patent: 4719427 (1988-01-01), Morishita et al.
patent: 4733100 (1988-03-01), Nusairat et al.
patent: 4779050 (1988-10-01), Ohnari
patent: 4950913 (1990-08-01), Kephart
patent: 5191500 (1993-03-01), Hatano et al.
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