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:
Mar. 18, 1986
Filed:
Jul. 29, 1983
Hugh Menown, Chelmsford, GB;
Raymond P Knight, Braintree, GB;
English Electric Valve Company, Chelmsford, GB;
Abstract
Thyratrons have an anode and cathode with a control grid lying between them. A primary grid located between the control grid and cathode may be used to maintain a primary discharge between it and the cathode, and improve the operating characteristics of the thyratron. However, the primary discharge may penetrate into the region where the main discharge occurs and hence increase the probability of premature triggering of the thyratron. By employing the invention, the penetration of the primary discharge into the main discharge region is reduced. A primary grid comprises two elements which have apertures. The elements are arranged so that the apertures in one element do not overlap those in the other. Thus the primary discharge which penetrates through the first element is prevented from reaching the main discharge region by the second element.