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:
May. 30, 2006
Filed:
Jul. 05, 2002
Mark W. Grossman, Belmont, MA (US);
William A. George, Lynn, MA (US);
Alfred H. Bellows, Wayland, MA (US);
Eric Keup, Ipswich, MA (US);
Mark W. Grossman, Belmont, MA (US);
William A. George, Lynn, MA (US);
Alfred H. Bellows, Wayland, MA (US);
Eric Keup, Ipswich, MA (US);
Osram Sylvania Inc., Danvers, MA (US);
Abstract
A dispenser () for a volatilizable material has a first member () that is substantially cup-shaped with a given diameter (X) and with a given depth (Z) and having a first peripheral flange () having a first diameter (D). A second member () has a second peripheral flange () with a second diameter (D) greater than the given diameter (X). The first peripheral flange () and the second peripheral flange () are in intimate contact thereby defining a volatilizable material chamber () between the bottom () of the second member () and the bottom () of the first cup-shaped member (). A volatilizable material () such as liquid mercury is placed in the chamber; and a hermetic seal () is formed between the first and second flanges. When installed in a fluorescent lamp the volatilizable material is released by heating the dispenser with RF current. The material is released when the vapor pressure within the dispenser reaches about 20 atmospheres. For mercury, this pressure is achieved when the dispenser reaches about 600° C.