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COLLAPSIBLE HELICAL ANTENNA

  • US 3,699,585 A
  • Filed: 12/17/1970
  • Issued: 10/17/1972
  • Est. Priority Date: 12/17/1970
  • Status: Expired due to Term
First Claim
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1. A collapsible, helical antenna comprising:

  • a boom;

    a helical conductor disposed around said boom;

    a plurality of rings disposed on said boom and in sliding relation therewith;

    first tension elements extending from said rings to said helical conductor to hold said conductor coaxial to said boom; and

    flexible elements disposed to extend between adjacent ones of said rings for determining the maximum pitch of said helical conductor.

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