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Parallelogram barker spacenet
Parallelogram barker spacenet







parallelogram barker spacenet

In an elevatable and retractable antenna as in claim 4 wherein said support means comprises a parallelogram linkage interposed between said base member and antenna body whereby said body maintains a constant angular relationship to said base member as it is elevated and retracted by said support means.Ħ. In an elevatable and retractable antenna as in claim 3 wherein said control means includes an extension defined on said support means connected to said actuator.ĥ. In an elevatable and retractable antenna as in claim 1 wherein said control means includes an actuator connected to said support means and connected to said elements whereby movement of said support means pivots said elements between said open and closed positions.Ĥ. In an elevatable and retractable antenna as in claim 1 wherein said signal receiving elements are mounted on said antenna body in pairs, at least two pairs of elements mounted on said body and axially spaced thereon relative to each other, said control means including an actuator rod and links interconnecting said inner ends of said elements.ģ. An elevatable and retractable antenna having signal receiving elements movable between open and closed positions comprising, in combination, a base member, antenna body support means movably mounted on said base member movable between an elevated position and a retracted position, an elongated antenna body mounted on said support means spaced from said base member, a plurality of elongated signal receiving elements pivotally mounted on said body pivotal between open and closed positions, said signal receiving elements each having an inner end and an outer end, pivot means connecting said inner ends to said body whereby said elements are disposed in general alignment with said body when in the closed position and are transversely disposed to said body when in the open position, operating means connected to said support means for moving said support means between said elevated and retracted positions, and control means connected to said signal receiving elements automatically pivoting said elements to the open position as said body support means and body is elevated and automatically pivoting said elements to the closed position as said body support means and body is retracted.Ģ.









Parallelogram barker spacenet