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:
Jun. 15, 1976
Filed:
Mar. 25, 1975
Alexander Joseph Moore, Marlow, EN;
David Alexander Taylor, Kenton, EN;
David James Greene, Harrow, EN;
BICC Limited, London, EN;
Abstract
A rigid electromagnetic waveguide is manufactured in a continuous series of operations by causing an elongate mandrel, supported vertically, to travel along a predetermined path successively to a wire-winding station where a layer of closely wound helical turns of wire is applied; a station or stations where a layer or layers of resin-impregnated reinforcing elements to form a reinforcing wall is or are applied; a curing station where the resin is cured; and an extraction station where the waveguide is removed from the mandrel. Between the last of the stations where a layer of the reinforcing wall is formed and the curing station, the mandrel may pass through stations where a moisture barrier and an outer protective covering are applied. Risk of change in tension in the wires or reinforcing elements about the neutral axis of the waveguide is reduced.