The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 02, 1982
Filed:
Dec. 20, 1979
Rene Nazet, Paris, FR;
Pierre Ribout, Paris, FR;
Thomson-CSF, Paris, FR;
Abstract
The present invention relates to a method for the manufacture of a hyperfrequency delay line. The method comprises using a single metal wire shaped by the coiling thereof, said operation comprising bringing the wire into the form of contiguous coils. Coiling is followed by a wire cambering operation during which the coils are deformed at regular intervals in the axis of the line by using wedges, in such a way that the line is formed by a succession of identical groups of three coils in which the first and third coils have identical but oppositely directed inclinations with respect to the axis and in which half of the second coil remains contiguous with the first coil and half remains contiguous with the third coil. Application to the manufacture of double helix delay lines, of ring and bar and ring and loop lines, used in travelling wave tubes functioning as amplifiers.