Continuous corrugated waveguide and method of producing the same

Details Continuous corrugated waveguide and method of producing the same Continuous corrugated waveguide and method of producing the same

1973-09-17

1976-02-17

Borchelt, Archie R.

Metal working

Method of mechanical manufacture

Electrical device making

29454, 72368, 72385, 113116B, 333 95A, H01P 1100, H01P 320, B21D 1504

Patent

active

039382443

ABSTRACT:
A method of producing continuous lengths of coilable corrugated wave guide of rectangular cross-section which comprises forming a smooth-wall metal tube with a uniform wall thickness along the entire length and around the entire periphery, and transversely corrugating the walls of the tube along crest and root lines that form a substantially constant perimeter length around any cross-section of the corrugated tube taken perpendicular to the axis of the tube at any point along the length of the tube. In one embodiment, the corrugations of intersecting walls are offset at their intersection so that the crests of the corrugations of each wall meet the roots of the corrugations of the adjacent wall at each corner, with zigzag crests along the corners providing rigidity. In another embodiment, the corrugations are aligned with each other in each pair of intersecting sidewalls with the walls of one corrugation in each intersecting pair being folded outwardly alongside the walls of the other corrugation in that pair beginning at the line of intersection of that pair of corrugations. The smooth-wall metal tube is preferably formed from an elongated flat strip of metal having the longitudinal edges thereof joined to each other, and having a wall thickness of from 0.01 inch to 0.05 inch.

REFERENCES:
patent: 2556187 (1971-06-01), Ingalls

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