Communications: radio wave antennas – Antennas – Antenna components
Patent
1982-06-11
1985-02-05
Lieberman, Eli
Communications: radio wave antennas
Antennas
Antenna components
H01Q 1520
Patent
active
044980876
ABSTRACT:
An unfoldable antenna netting reflector includes a plurality of stiff ribs to which the reflector net is secured. These stiff ribs are pivoted to a central holding member and extend radially outwardly when the reflector is unfolded to spread out the reflector netting. In order to assure a trouble-free unfolding of such a reflector at any time levers (8, 9) are provided between two ribs each (2, 4; 4, 6). Tensioning cables (14, 16) running over rollers (17, 19) are operatively connected to the buckling joints (8',9') of these levers for straightening out the levers. The ends of the levers are pivoted to the respective rib and the levers are capable of buckling in but one direction. When the levers assume the stretched out position, they snap into a locked condition. A plurality of ropes arranged for operating a plurality of levers may be operated in unison. The levers are secured to the ribs either at a spacing from the radially outer end of the ribs, or they may be secured to these radially outer rib ends.
REFERENCES:
patent: 2535049 (1950-12-01), De Rosa
patent: 3286270 (1966-12-01), Kelly
patent: 3406404 (1968-12-01), Maier
patent: 3541569 (1970-11-01), Berks et al.
patent: 3566346 (1971-02-01), Scopatz
patent: 3576566 (1971-04-01), Cover, Jr. et al.
patent: 4030102 (1977-06-01), Kaplan et al.
patent: 4030103 (1977-06-01), Campbell
patent: 4352113 (1982-09-01), Labruyere
"Zeitschrift fuer Flugwissenschaft und Weltraumforschung"; No. 4, l980, v 5, pp. 255 to 267.
Herbig Henning
Imbiel Herbert
Fasse W. G.
Kane, Jr. D. H.
Lieberman Eli
Messerschmitt-Boelkow-Blohm Gesellschaft mit beschraenkter Haftu
Ohralik K.
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