Patents Assigned to Hormann Sicherheitstechnik GmbH
  • Microwave barrier
    Patent number: 4752778
    Abstract: The invention relates to a microwave barrier which uses at least two aerial beams of which one forms a protected zone extending down to the ground while the other is inclined upwards relative to the horizontal. In this way by the use of a simple construction intruders can be prevented both from crawling under the barrier and jumping over it.
    Type: Grant
    Filed: October 31, 1984
    Date of Patent: June 21, 1988
    Assignee: Hormann Sicherheitstechnik GmbH
    Inventor: Ian T. Simpson