EP 0054401 A3 19830119 - ELECTRIC LIGHT SOURCE WITH INTEGRAL SWITCH
Title (en)
ELECTRIC LIGHT SOURCE WITH INTEGRAL SWITCH
Publication
Application
Priority
- GB 8040117 A 19801215
- GB 8105847 A 19810224
Abstract (en)
[origin: EP0054401A2] An electric lamp (30) incorporates an integral mercury switch (37) with the lamp structure to provide an attitude-sensitive light source. The mercury switch may be incorporated within the lamp envelope, either with the filament or in a separate compartment of the envelope, within a specially extended portion of an exhaust tube, or within a cap structure sealed to the light source envelope. The mercury switch is either specially fabricated during formation of the lamp structure, or may comprise a preformed capsule. The unit may be fitted in conventional screw bayonet and other sockets in the same manner as a corresponding ordinary lamp.
IPC 1-7
IPC 8 full level
H01K 1/64 (2006.01)
CPC (source: EP)
H01K 1/64 (2013.01)
Citation (search report)
- [X] US 2561460 A 19510724 - MAX BLOESE
- [X] US 339253 A 18860406
- [X] US 2086192 A 19370706 - SCHUMAKER WILLIAM L
- [X] FR 1518839 A 19680329
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
DOCDB simple family (application)
EP 81305793 A 19811208