Metal working – Method of mechanical manufacture – Electrical device making
Patent
1975-02-18
1977-09-13
Lanham, C.W.
Metal working
Method of mechanical manufacture
Electrical device making
264334, 249185, 343786, H01Q 1700, B28B 710
Patent
active
040472876
ABSTRACT:
A method for forming a high frequency antenna such as a horn-reflector antenna. In fabricating the horn antenna a mold may be used which comprises a paraboloid-cylindrical section and a pair of half cone shells for forming respectively the paraboloid-cylindrical portion and the cone portion of the antenna. In assembling the mold, the shells are secured together and then the cylindrical section is fastened to the assembled shells. After the antenna has been formed, the mold is disassembled by first removing the paraboloid-cylindrical section, thereafter removing one of the shells and then the remaining shell; and all such mold parts being removed via the radiating aperture of the paraboloid-cylindrical portion of the antenna.
REFERENCES:
patent: 333755 (1886-01-01), Isaacs
patent: 856852 (1907-06-01), Dorward
patent: 3510873 (1970-05-01), Trevisan
patent: 3545718 (1970-12-01), Shale
patent: 3646565 (1972-02-01), Robinson, Jr. et al.
Hubbard Howard H.
Walsh Thomas P.
Antennas for Communications, Inc.
Crane Daniel C.
Goldberg Jerome
Lanham C.W.
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