Resources Contact Us Home
Obstacle detecting apparatus using ultrasonic waves

Image Number 4 for United States Patent #4103278.

The present invention relates to an obstacle detecting apparatus using ultrasonic waves, wherein an ultrasonic transmitter-receiver and an ultrasonic receiver are provided at a desired interval, and thereby the distance and the direction to the obstacle are obtained by the intersecting point between the circular locus of the first reflected wave returning after reflection at the obstacle, and the elliptical locus of the second reflected wave to the ultrasonic receiver. Under this structure, when any person or any obstacle like a building exists within the dead angle of a motor vehicle in case a driver is going to back it, the driver is informed of the distance and the direction to the obstacle by means of the obstacle detecting apparatus using ultrasonic waves.

  Recently Added Patents
Magnesium metal-air battery
Semiconductor device and method of forming interconnect structure with conductive pads having expanded interconnect surface area for enhanced interconnection properties
Cellulose acylate laminate film, method for producing cellulose acylate laminate film, polarizer and liquid crystal display device
Error recovery storage along a memory string
Multiple RF band operation in mobile devices
Vehicle battery with cell balancing current paths and method of charging the same
Method for incubating the contents of a receptacle
  Randomly Featured Patents
Image processing apparatus for dividing images for printing
Rock bit cone retention means
Automated selection of item categories for presenting item recommendations
Analytical work station
Method for reducing silicone foam density and silicone foam compositions
RISC system performing calls and returns without saving or restoring window pointers and delaying saving until multi-register areas are filled
Chemical sensors for detecting volatile organic compounds and methods of use
Compositions and methods for detecting gene rearrangements and translocations
Method of combining signals in a telephone conference circuit
Electronic fuel injection quiet operation