Communications: radio wave antennas – Antennas – Rod type
Patent
1983-07-05
1985-09-10
Lieberman, Eli
Communications: radio wave antennas
Antennas
Rod type
H01Q 120, H01Q 930
Patent
active
045409897
ABSTRACT:
An antenna is provided which includes a first closely wound coil spring member of electrically conductive material. A second closely wound coil spring member which is substantially smaller than the first spring member is wound around a portion of the first spring member adjacent one end thereof. The second spring member is anchored to the first spring member by solder which is flowed into the coils of the first and second spring members where they contact each other. The end of the flexible first element to which the second member is attached is situated within a housing of rigid materials having first and second ends which include upper and lower apertures, respectively, the second spring member is fixedly held between the first and second ends of the housing. The second spring member with the first spring member therein is situated within the housing such that the portions of the first spring member on either side of the second spring member are situated within the respective apertures in the first and second housing ends. An antenna structure which exhibits high mechanical structural integrity is thus provided.
REFERENCES:
patent: 2144038 (1939-01-01), Trump
patent: 2206821 (1940-07-01), Mydlil
patent: 2214685 (1940-09-01), Stone, Jr.
patent: 2391202 (1945-12-01), Tellander et al.
patent: 2397151 (1946-03-01), Mitchell
patent: 2419611 (1947-04-01), Walsh
patent: 2493787 (1950-01-01), Torretti
patent: 2558763 (1951-07-01), Lee
patent: 3944722 (1976-03-01), Larsen
patent: 4360814 (1983-11-01), Wells
patent: 4435713 (1984-03-01), Casparaitis et al.
Downey Joseph T.
Kahler Mark P.
Lieberman Eli
Motorola Inc.
Nichols Daniel K.
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