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Emergency airplane locating transmitter

  • US 3,876,942 A
  • Filed: 09/21/1973
  • Issued: 04/08/1975
  • Est. Priority Date: 09/21/1973
  • Status: Expired due to Term
First Claim
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1. An airplane locating device comprising:

  • a hand-carried portable housing, said housing comprising a rectangular configuration having a battery compartment at one end, a transmitter compartment between its ends and a handle at the other end, said housing defining a display plane on its front surface adjacent said transmitter compartment for mounting and exposing to an operator a selector switch and a microphone jack, a bracket for detachably fitting one face of said housing, said bracket being fixedly attached to the airplane for holding firmly said device, switching means mounted in said housing for selectively connecting a battery placed in said battery compartment with a transmitter placed in said transmitter compartment, said switching means comprising a selector switch and an impact switch, said selector switch in one position directly connecting the battery in said battery compartment to the transmitter in said transmitter compartment and when in another position connecting the battery through said impact switch to the transmitter, said impact switch upon closure under given impact forces energizing the transmitter, a transmitter mounted in said transmitter compartment transmitting periodically changing audio distress signals on civilian and military international distress frequencies, a microphone jack mounted on said housing for transmitting by said transmitter a voice modulated output signal, a connector in electrical contact with the output signal of said transmitter for attaching a radiation antenna to said housing, and means mounted on said housing for resetting said impact switch to its contact open position.

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