Manufacture of helical wave guides

Details Manufacture of helical wave guides Manufacture of helical wave guides

1977-01-28

1978-05-23

Simpson, Othell M.

Metal working

Plural diverse manufacturing apparatus including means for...

Binding or covering and cutting

29600, H01P 1100

Patent

active

040902803

ABSTRACT:
A machine for manufacturing circular section helical wave-guides and providing simultaneous calibration of the bore of the helix and snug fitting of the screen around the helix. The helix is loosely fitted in an enveloping tube and both tube and helix are drawn through a reducing die for drawing the tube down onto the helix. The bore of the helix is established by a mandrel and the outer surface of the helix is softened just before entering the die whereby the helix is welded to the inner surface of the tube.

REFERENCES:
patent: 3237285 (1966-03-01), Gormley
patent: 3342648 (1967-09-01), Zucker et al.
patent: 3500534 (1970-03-01), Kennedy
patent: 3540119 (1970-11-01), Manoly
patent: 3605046 (1971-09-01), Miller
patent: 3845549 (1974-11-01), Ferrentino

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