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
Techniques for determining optimized local repair paths
Sign language keyboard and sign language searching apparatus using the same
Semiconductor device
Optical modulator module
Nickel-cobalt-manganese multi-element lithium ion battery cathode material with dopants and its methods of preparation
Techniques to manage communications resources for a multimedia conference event
Circuit arrangement having a load transistor and a voltage limiting circuit and method for driving a load transistor
  Randomly Featured Patents
Defective product inspection apparatus, probe positioning method and probe moving method
Modular furniture unit
System and method for customer requests and contact management
Preparation of curable resin from cyanate ester compound
Multiple-nip calender and calendering arrangement
Piezoelectric transducers
Solventborne and activated solventborne paint packs, and waterborne coating compositions containing them
Polymer impurity deactivators
Thiolactams and uses thereof
System and method for establishing relationships between hypertext reference and electronic mail program incorporating the same