EP 0962691 A3 20001025 - Yttrium oxide based gas mantle
Title (en)
Yttrium oxide based gas mantle
Title (de)
Yttriumoxid enthaltender Gasglühkörper
Title (fr)
Manchon pour lampe à gaz contenant de l'oxyde d'yttrium
Publication
Application
Priority
GB 9812110 A 19980606
Abstract (en)
[origin: EP0962691A2] The present invention relates to incandescent pre-formed low-pressure gas mantles useful for fixed fuel-burning lanterns, such as stationary lamp posts or patio lights (typically at gas pressures of 2.7KPa). The pre-formed low-pressure gas mantle has a body comprising: (A) 77.1 to 85.3 mol% yttrium oxide as the predominant metal oxide, (B) 1.4 to 3.1 mol% of at least one lanthanide oxide, (C) 2.2 to 5.0 mol% of at least one of magnesium oxide and aluminium oxide, and (D) 11.1 to 14.8 mol% of calcium oxide, based on the total molar content of (A), (B), (C) and (D). Such a mantle is non-radioactive, durable and provides good illumination.
IPC 1-7
IPC 8 full level
F21H 1/02 (2006.01)
CPC (source: EP)
F21H 1/02 (2013.01)
Citation (search report)
[DA] GB 2145811 A 19850403 - COLEMAN CO
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 0962691 A2 19991208; EP 0962691 A3 20001025; EP 0962691 B1 20030514; DE 69907806 D1 20030618; DE 69907806 T2 20040122; GB 9812110 D0 19980805
DOCDB simple family (application)
EP 99304169 A 19990528; DE 69907806 T 19990528; GB 9812110 A 19980606