Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Sonic direction finder










Image Number 3 for United States Patent #4143351.

1. A direction finding system for determining the direction from which short sonic or ultrasonic pulses are incoming, comprising: a plurality of electroacoustic transducers forming a circular arrangement; electronic means for sequentially switching in and out pairs of diametrically opposed transducers; differential means having two inputs, respectively connected by said electronic means to said switched-in transducers, and an output for providing the differential output signal of each of said pairs; and means for deriving the phase of said output signal.








 
 
  Recently Added Patents
Automated dynamic differential data processing
Power or voltage oscillation damping in a power transmission system
Power supply system for a data storage system and a method of controlling a power supply
Magnetic recording medium, information storage device, and method of manufacturing magnetic recording medium
Magnetic impedance element and magnetic sensor using the same
Monitoring heap in real-time by a mobile agent to assess performance of virtual machine
Security patch update processor
  Randomly Featured Patents
Carrying case
Warning and avoidance of sending email messages to unintended recipients
Process and plant for converting hazardous waste containing chromium VI into non-hazardous waste
Method of decoking an installation for steam cracking hydrocarbons, and a corresponding steam-cracking installation
Self-sealing films
Method and apparatus for reading coded labels
Systems and methods for gathering data from and diagnosing the status of an air conditioner
Electronic device client and server system and method
Bag having improved tie features
Brain and heart cyclic nucleotide gated ion channel compounds and uses thereof