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
Recovery of a hot-pluggable serial communication link
Idle stop and go system and method for controlling thereof
Method for fabrication of a semiconductor device and structure
Patterned birefringent product
Gas cap removal tool
Anti-phishing system and method
  Randomly Featured Patents
Controlled release and taste masking oral pharmaceutical compositions
Shoe sole
Toolbox with handle having cover locking mechanism
Tape dispenser with a contact roller
Hockey target
Apparatus and method for detecting the presence of gas in a borehole flow stream
Timing method and apparatus for digital logic circuits
Hospital bed
Thiophene derivatives as S1P1/EDG1 receptor agonists
PDF image-only dedicated print-flow pipeline structure and processing