×

Security systems

  • US 4,910,493 A
  • Filed: 12/05/1988
  • Issued: 03/20/1990
  • Est. Priority Date: 07/11/1988
  • Status: Expired due to Fees
First Claim
Patent Images

1. A security system for use in a vehicle or a portable unit having a radio transmitting device, said system comprising:

  • signalling means for generating a signal in response to an alarm condition,a control unit connected to said signalling means for initiating a transmission on the radio transmitting device in response to said alarm condition, andmeans for recording an operator voice generated vehicle, portable unit location message,wherein said control unit produces an alert signal periodically in order to prompt voice recording of a fresh location message using said recording means, said location message forming at least part of the transmission, in response to an alarm condition.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×