Communications: electrical – External condition vehicle-mounted indicator or alarm – Transmitter in one vehicle only
Patent
1988-04-01
1989-01-10
Crosland, Donnie L.
Communications: electrical
External condition vehicle-mounted indicator or alarm
Transmitter in one vehicle only
340903, 340901, 340 52H, 367909, 180169, G08G 100
Patent
active
047976730
ABSTRACT:
An alarm device for a construction vehicle including a transceiver adapted for mounting at the rearward end of a vehicle for directing its wave output rearwardly of the vehicle. Return wave signals for many objects within the transceiver range are picked up and supplied to the transceiver by an antenna. Any resultant doppler shift signal is amplified for driving an audio alarm positioned on the vehicle. The circuit is adapted for electrical connection to the reverse gear of the vehicle for activation only when the vehicle transmission is engaged in reverse gear.
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Bureau of Mines Publication published in 1986 titled "Improved Back-Up Alarm Technology for Mobile Mining Equipment".
Crosland Donnie L.
Land Paving Company
Omni Holding Company
Ronk Jerry
Schreiner Bruce E.
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