Collapsible, flattenable and drum wrappable type of radio antenna, particularly for motor-vehicles and moving equipments
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Sep 30, 1980
Grant Date -
N/A
app pub date -
Jun 19, 1978
filing date -
Jun 28, 1977
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An antenna has a housing at least one opening with a drum rotatably mounted in said housing perpendicular to the opening and a wave receiving stylus carried by the drum for projection from the housing through said opening. The stylus is a band preformed according to a given curved shape about its longitudinal axis with the band being sufficiently resilient so as to be flattened and wound up on the drum and being sufficiently flexible so as to assume a tubular configuration in cross-section in the absence of stress when in a position extended from the housing. Idler rollers are carried by the housing around the drum in spaced relation thereto to limit band sliding frictions with respect to the housing and guide elements are interposed between the idler rollers to promote a correct superimposition of the band spirals on and off the drum.
First Claim
Other Claims data not available
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International Classification(s)
- 1978 Application Filing Year
- H01Q Class
- 135 Applications Filed
- 5 Patents Issued To-Date
- 3.71 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 12 Citation Count
- H01Q Class
- 0 % this patent is cited more than
- 45 Age