×

Fire hydrant anti-tamper device

  • US 6,816,072 B2
  • Filed: 12/05/2002
  • Issued: 11/09/2004
  • Est. Priority Date: 12/07/2001
  • Status: Expired due to Fees
First Claim
Patent Images

1. A tamper detection apparatus for a fire hydrant having a discharge nozzle, the apparatus comprising:

  • a cap mountable on a discharge nozzle of a fire hydrant;

    a cap movement detector mounted to a fire hydrant discharge nozzle cap, the cap movement detector generating an output upon detecting removal movement of the cap relative to the fire hydrant; and

    transmitter means, mounted to a fire hydrant cap and responsive to an output of the cap movement detector, for transmitting a tamper detection signal remotely from the fire hydrant.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×