Back to results
US 6,642,667 B2Granted
Automatic shut-off for flashlights
OwnerDeborah Kah Avisinventor
Life of this patent
Estimating the term…
Abstract
A flashlight includes a motion detector and a light intensity detector for automatic shutoff of the flashlight when unused for a period of time. A timer for turning off the flashlight bulb is reset by the detectors when the flashlight is in motion. The light intensity detector also shuts off the flashlight bulb when the flashlight is placed in a well lit area. Override switches permit a user to maintain power to the flashlight bulb regardless of the detector states.
Claims21
A portable flash light comprising:
- a light unit;
- a power supply unit for providing electrical power to said light unit;
- a timer capable of being selectively activated for a predetermined time interval, wherein said light unit receives power for the duration of said predetermined time interval and wherein said light unit does not receive power when said predetermined time interval ends;
- a motion detector operable to detect flash light motion;
- and
- a reset unit that is capable of automatically resetting said timer for a predetermined time interval;
- wherein said resets unit resets said timer when flashlight motion is detected by said motion detector.
4 more elements
A portable flashlight comprising:
- a light unit;
- a power supply unit for providing electrical power to said light unit;
- a timer for setting a predetermined time interval, wherein said light unit receives power for the duration of said predetermined time interval and wherein said light unit does not receive power when said predetermined time interval ends;
- a motion sensor operable to detect flashlight motion;
- and
- a reset unit that is capable of automatically resetting said timer for a predetermined time interval;
- wherein said reset unit resets said timer when flashlight motion is sensed by said motion sensor.
4 more elements
Dependencies are inferred from the claim text.