Driver alerting device

Details Driver alerting device Driver alerting device

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.

REFERENCES:
patent: 2974304 (1961-03-01), Norlund
patent: 3226673 (1965-12-01), Cudworth
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patent: 3781879 (1973-12-01), Staras et al.
patent: 3789950 (1974-02-01), Strenglein
patent: 3984836 (1976-10-01), Oishi
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patent: 4260980 (1981-04-01), Bates
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patent: 4300116 (1981-11-01), Stahovec
patent: 4356489 (1982-10-01), Hirota
patent: 4358759 (1982-11-01), Stewart et al.
patent: 4404541 (1983-09-01), Kodera et al.
patent: 4528563 (1985-07-01), Takeuchi
patent: 4543577 (1985-09-01), Tachibana et al.
Bureau of Mines Publication published in 1986 titled "Improved Back-Up Alarm Technology for Mobile Mining Equipment".

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