EP 0365258 A1 19900425 - Glow plug.
Title (en)
Glow plug.
Title (de)
Glühkerze.
Title (fr)
Bougie à incandescence.
Publication
Application
Priority
GB 8824533 A 19881019
Abstract (en)
Electrically operated glow plug for facilitating start-up of diesel and other compression engines is of the sheathed element self-limiting type and incorporates resistance and heating elements (28,30) which are preferably portions of a common length of wire (26), the wire or other filament means constituting said elements being graduated in cross-sectional area along its length, the area at the effective proximal end being substantially greater than the area the effective distal end where the heating element is attached to the distal tip (22) of the sheath (20). Conveniently the wire length (26) is uniformly tapered along its length and it is also preferred that the coils constituting the heating element are more closely pitched and/or have a greater diameter than those constituting the resistance element.
IPC 1-7
IPC 8 full level
CPC (source: EP)
F23Q 7/001 (2013.01); F02B 3/06 (2013.01)
Citation (search report)
- [X] FR 2131437 A5 19721110 - BOSCH
- [X] GB 2155543 A 19850925 - MARELLI SPA FABBRICA ITALIANA
- [A] FR 1292098 A 19620427 - MAGNETI MARELLI SPA
- [A] FR 2105879 A5 19720428 - BOSCH
- [A] EP 0229677 A2 19870722 - WELLMAN THERMAL SYST [US]
Designated contracting state (EPC)
AT BE CH DE ES FR GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0365258 A1 19900425; GB 2224074 A 19900425; GB 2224074 B 19921209; GB 8824533 D0 19881123
DOCDB simple family (application)
EP 89310607 A 19891016; GB 8824533 A 19881019