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. 19, 2007
Filed:
Dec. 23, 2002
Johannes Jacobus Franciscus Geijtenbeek, Eindhoven, NL;
Fransiscus Arnoldus Vermeulen, Eindhoven, NL;
Johannes Jacobus Franciscus Geijtenbeek, Eindhoven, NL;
Fransiscus Arnoldus Vermeulen, Eindhoven, NL;
Koninklijke Philips Electronics, N.V., Eindhoven, NL;
Abstract
A metal halide lamp () is described, the lamp being designed such that, when the lamp is operative in a vertical orientation, the location of the salt pool is close to the top of the discharge chamber (). In an embodiment, the coldest spot is close to the top of the discharge chamber. Means are provided enabling more heat to be supplied to the bottom part than to the upper part. In a lamp assembly (), comprising a lamp () arranged inside a bulb (), additional heat generating means () may comprise a radiation coil ().