EP 2229557 A2 20100922 - SHEATHED GLOW PLUG
Title (en)
SHEATHED GLOW PLUG
Title (de)
UMMANTELTER GLÜHSTIFT
Title (fr)
BOUGIE DE PRÉCHAUFFAGE GAINÉE
Publication
Application
Priority
- US 2008087071 W 20081217
- US 1412207 P 20071217
- US 6138708 P 20080613
- US 33568208 A 20081216
Abstract (en)
[origin: WO2009079530A2] A glow plug which includes an annular metal shell, thermally conductive tubular sheath, central electrode; resistance heating element, and electrically insulating, thermally conductive powder includes a glass seal in sealing engagement with the sheath and the electrode to form a sealed cavity within the sheath. The glass seal may include silicate, borate and borosilicate glasses, and may include one or more transition metal oxides, such as oxides of chromium, cobalt, nickel, iron and copper. The glass may also include a filler, including a ceramic oxide, such as one selected from a group consisting of quartz, eucryptites, leucites, cordierites, beta-spodumene, glass-ceramics, low- expansion glass(CTE<5ppm/°C), mullite, zircon, zirconia and alumina. The sealed cavity may house a protective inert gas. The resistance heating element may be formed from a metal selected from a group consisting of tungsten, molybdenum, or alloys containing tungsten, molybdenum, nickel, iron, tantalum, niobium, titanium, vanadium, osmium and chromium.
IPC 8 full level
CPC (source: EP US)
F23Q 7/001 (2013.01 - EP US)
Citation (search report)
See references of WO 2009079530A2
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA MK RS
DOCDB simple family (publication)
WO 2009079530 A2 20090625; WO 2009079530 A3 20090911; CN 101896772 A 20101124; CN 101896772 B 20120425; EP 2229557 A2 20100922; JP 2011506910 A 20110303; KR 20100098702 A 20100908; US 2009184101 A1 20090723
DOCDB simple family (application)
US 2008087071 W 20081217; CN 200880121318 A 20081217; EP 08861631 A 20081217; JP 2010539719 A 20081217; KR 20107015756 A 20081217; US 33568208 A 20081216