Corrugated elliptical waveguide with permanent twist

Details Corrugated elliptical waveguide with permanent twist Corrugated elliptical waveguide with permanent twist

1978-11-24

1980-03-25

Gilden, Leon

Metal deforming

By twisting axially moving work

72371, B21D 1114

Patent

active

041943805

ABSTRACT:
A corrugated elliptical waveguide comprises a unitary, fluid-impervious, corrugated metallic tube with a substantially elliptical cross section. The corrugated tube is permanently twisted about its longitudinal axis for connecting two terminals having their E planes out of register with each other. The twist is uniformly distributed along a predetermined length of the corrugated tube. The twist is formed by twisting a corrugated circular waveguide about its longitudinal axis and simultaneously converting the circular cross section to an elliptical cross section, thereby causing the twist to be set in the elliptical waveguide.

REFERENCES:
patent: 240984 (1881-05-01), Farmer
patent: 2260779 (1941-10-01), Huffmen
patent: 2800705 (1957-07-01), Ingall et al.
patent: 3520165 (1970-07-01), Dodson

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