IMPROVEMENTS IN OR RELATING TO SEARCH LAMPS AND TORCHES

A torch particularly for use in hazardous conditions has safety and battery power warning features. The supply from a power source (34) to a light source (12) includes a frangible conductive element (132) in the conductive path to the light source (12). The conductive element (132) is provided on a...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	GEOFFREY ANTHONY WILLIAMS, PETER MCGRAIL, GRACE MCGRAIL, BRIAN JAMES WARD
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF HEATING LIGHTING LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE ORSPECIALLY ADAPTED FOR TRANSPORTATION MECHANICAL ENGINEERING STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR WEAPONS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	A torch particularly for use in hazardous conditions has safety and battery power warning features. The supply from a power source (34) to a light source (12) includes a frangible conductive element (132) in the conductive path to the light source (12). The conductive element (132) is provided on a torch glass (128), so that if the glass (128) breaks, the power supply to lamp (12) will be cut off, thereby eleminating the risk of sparks, and exposure of the hot lamp element to atmosphere. The torch also has a switch (22) and relays (38, 40) enabling batteries of the power source (34) to be switched between series and parallel arrays, enabling the torch to operate at full or low power. The torch also has a battery voltage sensing and indicating means, which cause light source (12) to flash when battery voltage reaches a first predetermined level, and for the light source (12) to be switched off permanently when battery voltage reaches a second predetermined level.