Patent · US Active

UV mercury low-pressure lamp with amalgam deposit

US10593536B2 · kind B2 · utility

0Cited by

6References

10Claims

0Family size

Assignee

Xylem IP Management S. à r.l. · LU

Inventors

Andre Wojciechowski · Essen, DE
Michael Lang · Longmont, US
Uwe Kanigowski · Velbert, DE

Key dates

Filing date	Jul 7, 2017
Grant date	Mar 17, 2020
Priority date	—
Expiry date	Jul 7, 2037

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC02F2303/04
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An ultraviolet mercury low-pressure amalgam lamp includes a tube having a first end and a second end, a first electrode placed in the first end of the tube, and a second electrode placed in the second end of the tube, whereby when the lamp is energized a discharge path is formed between the first and second electrodes. At least one amalgam deposit is adjacent to one of the first and second electrodes out of the discharge path between the first and second electrodes. The tube has at least one constriction, wherein the at least one amalgam deposit is placed behind the constriction with respect to the discharge path such that the at least one amalgam deposit is protected by the constriction from the heat emitted by the electrodes.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.