Communications: radio wave antennas – Antennas – With spaced or external radio wave refractor
Patent
1990-08-28
1992-05-19
Wimer, Michael C.
Communications: radio wave antennas
Antennas
With spaced or external radio wave refractor
343877, 343880, H01Q 1906
Patent
active
051152495
ABSTRACT:
A lens assembly for a window shade radar includes two adjacent membranes rolled onto separate rollers. Expandable side masts are pivotally secured to the rollers and the collapsible main beams by slip joints. The main beams enclose wire busses which are directly connected to the membrane modular elements without interposed rotary connections.
REFERENCES:
patent: 1689400 (1928-10-01), Manley
patent: 1696402 (1928-12-01), Horton
patent: 3234556 (1966-02-01), Tanner
patent: 4587777 (1986-05-01), Vasques et al.
patent: 4660265 (1987-04-01), Pallmeyer
patent: 4771817 (1988-09-01), Angeloff
Grumman Aerospace Corporation
Le Hoang-anh
Wimer Michael C.
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