Antenna reflector surface contour control

Claim 1

IN AN ANTENNA SYSTEM: (A) A CONTOURED REFLECTING SURFACE HAVING A RADIOFREQUENCY AXIS AND HAVING A SURFACE POINT WHICH IS DEFLECTING FROM A ESTABLISHED REFERENCE POINT IN A DIRECTION PARALLEL TO SAID RADIO-FREQUENCY AXIS WHEN THE REFLECTING SURFACE IS ROTATED IN ELEVATION FROM A POSITION WHEN SAID RADIO-FREQUENCY AXIS IN A VERTICAL CONDITION, (B) PRIMARY BACKUP STRUCTURE FIXEDLY CONNECTED TO AND PROVIDING SUPPORT FOR SAID REFLECTING SURFACE, (C) SECONDARY BACKUP STRUCTURE FIXEDLY CONNECTED TO AND PROVIDING SUPPORT FOR SAID PRIMARY BACKUP STRUCTURE, (D) SEPARATE MEANS COOPERATING WITH SAID SECONDARY BACKUP STRUCTURE AND ORIGINATING A DEFLECTION COMPENSATION FORCE WHICH VARIES IN MAGNITUDE FROM A MINIMUM VALUE WHEN SAID REFLECTING SURFACE IS POSITIONED WITH SAID RADIO-FREQUENCY AXIS IN A VERTICAL CONDITION TO A MAXIMUM VALUE AS A FUNCTION OF THE ANGULAR DISPLACEMENT OF SAID RADIO-FREQUENCY AXIS FROM SAID VERTICAL CONDITION, AND (E) CABLE MEANS CONNECTED TO SAID SEPARATE MEANS AND TO SAID PRIMARY BACKUP STRUCTURE AND TRANSMITTING SAID DEFLECTION COMPENSATION FORCE FROM SAID SEPARATE MEANS TO SAID PRIMARY BACKUP STRUCTURE IN THE REGION OF SAID SURFACE POINT, SAID SECONDARY BACKUP STRUCTURE BEING RELATIVELY STABILIZED AGAINST DEFLECTION IN COMPARISON TO SAID PRIMARY BACKUP STRUCTURE, AND SAID CABLE MEANS APPLYING SAID COMPENSATION FORCE TO SAID PRIMARY BACKUP STRUCTURE ALONG A DIRECTION WHICH IS PARALLEL TO SAID RADIO-FREQUENCY AXIS.