Backup aid system and method for detecting the presence of a...

Details Backup aid system and method for detecting the presence of a... Backup aid system and method for detecting the presence of a...

2005-03-08

2005-03-08

Hofsass, Jeffery (Department: 2636)

Communications: electrical

Land vehicle alarms or indicators

For trailer

C340S435000, C340S903000

Reexamination Certificate

active

06864782

ABSTRACT:
A backup aid system (14) for detecting the presence of a trailer (12) includes a trailer connector (52a) and a backup aid controller (50) that has an input (66) electrically coupled to the connector (52a). The backup aid controller (50) monitors a voltage level at input (66). When the voltage level is above a first predetermined voltage, the controller (50) generates a backup warning signal. When the voltage is below a second predetermined voltage, the controller (50) disables the backup warning signal. Also, the system may monitor the voltage in between the first predetermined voltage and the second predetermined voltage to determine the presence of a lamp fault such as outage or corroded contacts.

REFERENCES:
patent: 3593274 (1971-07-01), Krugler
patent: 3840852 (1974-10-01), Schwellenbach
patent: 3965456 (1976-06-01), Schwellenbach
patent: 4195281 (1980-03-01), Bell
patent: 4430637 (1984-02-01), Koch-Ducker et al.
patent: 5030938 (1991-07-01), Bondzeit
patent: 5754123 (1998-05-01), Nashif et al.
patent: 5805061 (1998-09-01), Fritz et al.
patent: 6218952 (2001-04-01), Borland et al.
patent: 20030098785 (2003-05-01), Bishop

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