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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Obayashi; Hiroaki
Address:
Yokosuka, JP
No. of patents:
5
Patents:












Patent Number Title Of Patent Date Issued
4796726 Ultrasonic rangefinder January 10, 1989
An ultrasonic rangefinder capable of detecting a distance between a vehicle and an object with high accuracy is shown. The measure of microphones for transmitting and receiving ultrasonic waves is chosen so that detour waves are restricted.
4739860 Ultrasonic rangefinder April 26, 1988
An ultrasonic rangefinder capable of detecting a distance between a vehicle and an object with high accuracy is shown. The measurements for microphones for transmitting and receiving ultrasonic waves are chosen so that detour waves are restricted.
4677599 Ultra-sonic distance measuring apparatus and method June 30, 1987
An ultra-sonic sensor includes a driver circuit outputting a high-frequency driver signal which orders a transmitter to transmit ultra-sonic waves toward a target object. The driver circuit also sends the driver signal to a receiver. The driver signal is superimposed on a receiver signal
4677595 Ultrasonic vehicle rangefinder June 30, 1987
An ultrasonic vehicle rangefinder having a detecting system for discriminating whether trouble is in transmission or reception side is shown. The discrimination is established by detection of an attenuation vibration at a transmission microphone.
4611287 Fuel volume measuring system for automotive vehicle September 9, 1986
A fuel volume measuring system for an automotive vehicle in which fuel volume detection signals are simply averaged during a relatively-short averaging time period at regular measuring cycles when the vehicle is being refueled, and further weight-averaged or moving-averaged at regular










 
 
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