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:
Jul. 02, 1991
Filed:
Sep. 01, 1989
Ulrich Greb, Cossington, GB;
Neil A Linden-Smith, Thurmaston, GB;
Thorn EMI plc, London, GB;
Abstract
A discharge tube arrangement includes a discharge tube of a light-transmissive dielectric material and containing a fill. An excitation device for exciting surface waves in the discharge tube comprises an r.f. power generator and a launcher. The launcher is formed as an inner tube, an outer tube coaxial with the inner tube, and first and second end walls, at least one of the first and second end walls having an aperture for receiving the discharge tube. Means are provided inside the launcher for coupling r.f. power to the inner tube. A body of dielectric material extends from the inner tube to the outer tube, thereby to hold the tubes in fixed relative positions, the body encasing the coupling means.