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Primary Examiner: Smith, Alfred E.
Assistant Examiner: Punter, Wm. H.
Attorney: Wray; James C.

Next ten patents ordered by date:

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Title: Radiating transmission lines

Abstract: A leaky feeder coaxial cable has the inductance of the outer conductor altered by winding an extra conductor on the outer conductor or by physically forming the outer conductor so that it is unsymmetrical.

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Inventors: Martin, David James Reginald (Leatherhead, EN)

Application Number: 435415
Filing Date: 1974-01-22
Publication_date: 1976-04-06
Assignee: Coal Industry (Patents) Ltd. (London, EN)
Primary Class(es): 333/237 343/771
Other Classes:
US Patent Ref:

2133863	Oct, 1938	Knoderer	174/108.
2867778	Jan, 1959	Hafner	333/95.
3077569	Feb, 1963	Tkrath	333/95.
3735293	May, 1973	Breitenbach	343/771.
3810186	May, 1974	Makahara et al.	333/84.

Other Refs: 1,81224,405

, 1859	UK
, 1897	UK

Other References: Barlow et al., "An investigation of the Characteristics of Cylindrical Surface Waves," Proc. IEE, Vol. 100, pt. III, 11-1953, pp. 321-328.
Barlow et al., "An experimental Investigation of the Properties of Corrugated Cylindrical Surface Waveguides," Proc. IEE, Vol. 101, pt. III 5-1954, pp. 182-188.