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. 26, 1990
Filed:
Mar. 31, 1986
John P Dunn, Bath, NY (US);
North American Philips Corporation, New York, NY (US);
Abstract
A high pressure discharge lamp has a discharge vessel with a closure and an electrode lead-through with an electrode rod mounted thereon. The closure has an aperture therethrough with a predetermined diameter. The lead-through comprises an elongated cylindrical member dimensioned to fit closely within the aperture through the closure, and a limiting means for limiting the distance the lead-through extends in the discharge envelope. The lead-through is crimped at a predetermined location on its outer surface, forming the limiting means including a plurality of alternating contractions and expansions. The expansions form protuberances having a diameter greater than the predetermined inner diameter of the aperture. The protuberances limit the extent of insertion of the lead-through into the discharge envelope, align the lead-through on the closure with a centerline attitude, and determine the distance the electrode rod is inserted within the discharge vessel.