Electrical transmission or interconnection systems – Vehicle mounted systems – Automobile
Patent
1997-07-18
1999-09-07
Elms, Richard T.
Electrical transmission or interconnection systems
Vehicle mounted systems
Automobile
3071414, H01H 334
Patent
active
059491485
ABSTRACT:
A D.C. power distribution and fuse panel unit facilitates installation and trouble shooting of vehicle auxiliary electrical equipment such as two-way radios, sirens, computer mobile data terminals, and mobile phones in police and other emergency vehicles. The unit is installed beneath the dash of a vehicle or other location inside the vehicle and is connected to the battery by a single wire which passes through the firewall, and is joined to the ignition circuit by a second wire connected to a suitable point such as the existing vehicle fuse block. The unit is supplied with a constant source of positive D.C. voltage, and also with ignition voltage when the vehicle ignition switch is turned on. The unit contains solid state circuitry including relay circuits, timer circuit, and has a plurality of fused power output terminals including constant power, ignition controlled power, and delayed power shut-off terminals for connecting various auxiliary electrical devices having different power disconnect requirements, and may also have a plurality of individual fused input/output circuits. The unit provides a common power distribution module for connecting and supplying power to various types of auxiliary electrical equipment according to their particular requirements. The unit may also have a test switch to speed up the delayed shut-off sequence and allow rapid testing and trouble shooting.
REFERENCES:
patent: 3993914 (1976-11-01), Conrad et al.
patent: 4276483 (1981-06-01), Hayden
patent: 5142162 (1992-08-01), Sundeen et al.
Elms Richard T.
Roddy Kenneth A.
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