Patents by Inventor Derek R. Taylor

Derek R. Taylor has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Radio transmitter for repeated bursts of oscillations
    Patent number: 4401977
    Abstract: This radio transmitter is for use in an access control system and comprises a hands-free pocket token arranged to transmit bursts of oscillations at a preset carrier frequency with a preset number of carrier frequency cycles in each burst. The transmitter is controlled by a logic circuit driven from a counter of the number of oscillations both in a transmission burst and in the interval between bursts, so that a particularly simple system is provided which can be easily reset in accordance with requirements.
    Type: Grant
    Filed: January 6, 1981
    Date of Patent: August 30, 1983
    Assignee: Mastiff Security Systems Limited
    Inventor: Derek R. Taylor