By Adjustable Counterbalance Patents (Class 194/340)
  • Patent number: 6309098
    Abstract: A contactless-smart-IC-card receive and read-write mechanism for an on-street parking meter. The mechanism includes a nested cartridge set consisting of a card read-write unit and a card receiver. The card read-write unit further includes an outer case having an induction coil and a circuit board attached to one outer side of the outer case. The card receiver is removably nested in the outer case for an IC card to insert thereinto. The circuit board has different circuits provided thereon for controlling power supply to correctly complete card reading and overwriting. A detecting switch is mounted on the outer case to detect the existence of the IC card in the card receiver. Only when a correct IC card in the receiver is detected will a high frequency power supply circuit be actuated for the card read-write unit to read and overwrite data or amount stored in the IC card. The card read-write unit is not affected by external dust or rainwater to cause error operation.
    Type: Grant
    Filed: April 7, 2000
    Date of Patent: October 30, 2001
    Inventor: Ye Ping Wong
  • Patent number: 5903520
    Abstract: An electronic module for enhancing an operation of a conventional parking meter. The electronic module comprises a shell defining a hollow conformation and being attachable to a conventional parking meter, in substitution to an upper housing portion of that conventional parking meter. The electronic module has a meter condition sensor for detecting from a distant point one of the time expiry indicator and the violative condition indicator of that parking meter, when the indicator is in an indicating mode, and a vehicle sensor affixed to the shell for detecting from a distant point, a parked vehicle. The electronic module further has: an electronic circuitry mounted inside the shell and having a power source for operating the module; means for receiving a first signal from the meter condition sensor and a second signal from the vehicle sensor; means for processing the first and second signals and means for transmitting a coded message to a remote receiver.
    Type: Grant
    Filed: December 1, 1997
    Date of Patent: May 11, 1999
    Assignee: Metervision. Com Inc.
    Inventors: Mark R. Dee, James J. Richard