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Timing apparatus

  • US 5,091,895 A
  • Filed: 02/08/1991
  • Issued: 02/25/1992
  • Est. Priority Date: 08/12/1988
  • Status: Expired due to Fees
First Claim
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1. An electronic timing apparatus for determining the time at which specific vehicles (81, 82) pass over a timing line (A1-A4). said apparatus including an electronic transmitter (28) for attachment to each vehicle to be monitored, each transmitter being adapted, in use, to emit a unique identifying signal, characterized in that, a series of separate loop antennas (26) are arranged in closely adjacent relationship one to another across the width of a road or track (20) at said timing line to receive a signal from a said transmitter passing thereover, each loop being disposed in a substantially horizontal plane, the width (x) of each loop in a direction across said road or track, relative to the width of the vehicles to be monitored, being such that only one said transmitter can pass over a particular loop at the one time whereby the respective signals of a plurality of transmitters passing over said line simultaneously are received in different said loops.

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