Communications: electrical – External condition vehicle-mounted indicator or alarm – Transmitter in another vehicle
Reexamination Certificate
2006-08-31
2008-12-09
Bugg, George A (Department: 2612)
Communications: electrical
External condition vehicle-mounted indicator or alarm
Transmitter in another vehicle
C340S901000, C340S904000, C340S435000, C340S943000, C340S932200
Reexamination Certificate
active
07463165
ABSTRACT:
A directional back-up alarm deployed in a vehicle moving in an open space, in accordance with one embodiment of the present invention includes, in part, a first ultrasonic generator adapted to generate a first ultrasound signal; a second ultrasonic generator adapted to generate a second ultrasound signal; an audible sound generator adapted to generate an audible signal; a modulator adapted to modulate the first ultrasonic signal with the audible signal to generate a modulated signal; and a summing circuit adapted to receive and sum the modulated signal with the second ultrasonic signal to generate a combined signal. The combined signal is transmitted with a transmit antenna. The transmit antenna may include a Piezoelectric or silicon device.
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Allen Kenneth R.
Bugg George A
Preco Electronics, Inc.
Tang Son M
Townsend and Townsend / and Crew LLP
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