Removable dust-free lamp unit with contactless switch

Details Removable dust-free lamp unit with contactless switch Removable dust-free lamp unit with contactless switch

F - Mech Eng,Light,Heat,Weapons

21

V

240/85

F21V 31/00 (2006.01) F21V 19/04 (2006.01) F21V 25/04 (2006.01) F21V 25/12 (2006.01)

Patent

CA 1098097

ABSTRACT OF THE DISCLOSURE A lamp for use in subterranean galleries such as mines in which a cold cathode glow tube is received in a housing which, in turn, is removably mounted in a receptacle and is held in place by a ring clamping a flange of the housing against a flange of the receptacle. The housing may be provided with a translucent cover so that the housing can be removed and replaced as a unit. The terminals of the glow tube are embedded in an insulating potting mass within the housing. A reed switch on the receptacle cooperates with a magnet on the housing to de-energize the terminals of the housing upon its removal.

291202

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