Public transportation signaling device

  • US 6,621,177 B2
  • Filed: 12/26/2001
  • Issued: 09/16/2003
  • Est. Priority Date: 02/25/1999
  • Status: Expired due to Term
First Claim
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1. A signaling device for signaling a public transportation driver for installation in a transit site, comprising:

  • an activation unit, containing a switch, timing circuit for energizing a light emitting diode via an intermittent pulsing lighting circuit, said intermittent pulsing lighting circuit for alternately activating and deactivating said light emitting diode for a selected period of time, and electronics for controlling electricity to a light emitting diode;

    a replaceable power unit which includes one or more batteries, for supplying power to said activation unit and a signal unit and said light emitting diode; and

    said signal unit including said light emitting diode positioned to point at an approaching transit driver to signal the presence of a passenger, which is powered by said replaceable power unit, and controlled by said activation unit;

    wherein said signaling device is configured for installation in a tubular post member, and when said switch in said control unit is activated by a passenger, said light emitting diode in said signal unit blinks at a rate determined by said intermittent pulsing lighting, for a period of time determined by said timing circuit.

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