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Collapsible, flattenable and drum wrappable type of radio antenna, particularly for motor-vehicles and moving equipments
Collapsible, flattenable and drum wrappable type of radio antenna, particularly for motor-vehicles and moving equipments
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机译:可折叠,可展平和鼓包式的无线电天线,特别是用于机动车辆和移动设备的无线电天线
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摘要
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.
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