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Parking meter

  • US 4,356,903 A
  • Filed: 10/12/1979
  • Issued: 11/02/1982
  • Est. Priority Date: 10/12/1979
  • Status: Expired due to Term
First Claim
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1. An electronic parking meter comprising in combination:

  • a housing,a support for supporting said housing,an electrically operated numerical display secured to said housing and viewable from the exterior of said housing,coin receiving means for receiving and passing a plurality of coins of different denomination into said housing and storage means within said housing for coins received thereby,a source of electrical energy supported within said housing,electrical circuit means supported within said housing comprising;

    (a) a computer in the form of an electronic microprocessor having a plurality of inputs thereto and a plurality of output circuits extending therefrom,(b) a plurality of normally open coin detection switches each operable to be closed upon insertion of a coin into said housing of a specific denomination and each operable to pass a signal, when closed, from said electrical energy source to a respective input to said electronic microprocessor,(c) said microprocessor containing circuit means responsive to signals generated by respective of said normally open coin detection switches and operable thereafter for generating digital code signals on a plurality of its outputs which code signals are indicative of the value of the coins presented to said coin receiving means,(d) a preset counter connected to receive digital code signals generated by said electronic microprocessor and operatively set thereby in accordance with the value of the coins presented to said coin receiving means as determined by the number of times each of said normally open switches are closed,(e) an attendant oscillator for causing said counter to uncount after being set to a specific value by coins presented to said housing,(f) said counter having a plurality of outputs,(g) a decoder-driver for said electronic numerical display connected to said plurality of outputs of said counter and operably connected to said electronic digital display to cause said display to display numerical indications of the time determined by the remaining count in said counter,(h) signal generating means operable when said counter uncounts for generating a control signal, and(i) indicating means connected to receive said control signal and controlled thereby to indicate that the time on the meter has run out, and(j) alarm means located remote from said meter, code generating means for generating a code indicative of the location of said meter and short wave transmitting means connected to said code generating means and operable in response to said control signal to short wave transmit the code generated by said code generating means indicative of the location of said meter when said counter has run out.

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