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654results about "Electric torches/pocket-lamps" patented technology

Portable lighting device having externally attached voltage tester

A battery tester for use in combination with a portable lighting device such as a flashlight or lantern having a housing for retaining at least one battery including first and second terminals, each in electrical contact with an opposite pole of the battery, a conductor located on the exterior of the housing and having one end in electrical contact with the first terminal and an opposite end operably connectable to the second terminal. An indicator material overlies and is in responsive contact with the conductor to respond to and indicate a state that is present in the conductor. The indicator material is preferably a thermochromic ink responsive to heat changes in the conductor caused by a current flowing therethrough. The conductor and indicator material are preferably mounted on a flexible substrate imprinted with decorative ink and indicia and protected by a transparent protective layer.
Owner:EVEREADY BATTERY CO INC

Surgical headlight

A surgical headlamp containing dual lamp housings, each containing one or more LED light sources is featured. Both lamp housings may be adjusted so that light beams emitted by each may be selectively converged at a spot a predetermined distance in front of the lamp housings. Each lamp housing typically contains, in addition to the LED(s), one or more reflectors to gather and direct light generated by the LED(s) forward to an illuminated work area. Batteries, preferably rechargeable, mounted either on the headband supporting the headlamp on a user's head or external to the headband, are used to power the LED(s). Switch and / or dimming circuitry may be provided. Hot swapping, a capability whereby batteries may be interchanged during a lengthy surgical procedure, is also provided.
Owner:VISILED
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