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:
Sep. 02, 2003
Filed:
Dec. 13, 2001
Applicant:
Inventors:
Achim Hilscher, Friedberg-Stätzling, DE;
Thomas Noll, Kipfenberg, DE;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 6/304 ;
U.S. Cl.
CPC ...
H01J 6/304 ;
Abstract
The compact low-pressure discharge lamp ( ) has a wound tubular discharge vessel ( ) with at least four straight tubes ( ) which are in a polygonal arrangement and, close to or at the ends of the straight tubes ( ), are connected by transverse connections ( ) to form a single continuous discharge path which is closed off in a gastight manner. A coil spring ( ) made from metal, which runs parallel to the tubes ( ) is arranged in the center of the cylindrical cavity ( ) formed by the straight tubes ( ) of the discharge vessel ( ). The coil spring ( ) reduces the firing voltage required.