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Electronic parking meter and system

  • US 5,642,119 A
  • Filed: 09/28/1995
  • Issued: 06/24/1997
  • Est. Priority Date: 07/28/1993
  • Status: Expired due to Fees
First Claim
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1. A vehicle detector system for a parking meter comprising a processor having an input and an output, an R.F. transmitter having an input and an output, a R.F. receiver having a first and a second input and an output, said processor output being connected to said transmitter input and to said first input of said receiver, an antenna connected to said transmitter output and to said receiver second input and an energy detector having an input and an output, said energy detector input being connected to said receiver output and said energy detector output being connected to said processor input and said antenna transmitting a beam of R.F. energy for detecting a vehicle, as well as for detecting all objects that may come between said vehicle detector system and the vehicle.

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