US Patent No: 6,642,667
Number of patents in Portfolio can not be more than 2000
Automatic shut-off for flashlights
Stats
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Nov 4, 2003
Issued date -
Sep 5, 2002
filing date -
10/237,300
serial no -
In Force
status
Importance
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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.
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First Claim
Related Publications
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 4,450,351 Motion discontinuance detection system and method | 25 | 1983 | |
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| 6,249,089 Intelligent electrical device comprising microchip | 57 | 1998 | |
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| 4,451,871 Safety light or the like with high current drive | 28 | 1982 | |
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| 4,875,147 Delayed action flashlight | 28 | 1989 | |
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| 4,461,977 Single zone lighting controller | 27 | 1982 | |
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| 4,851,738 Lighting system having photosensing timing switch circuit | 9 | 1987 | |
| 5,138,538 Self-extinguishing flashlight | 55 | 1991 | |
| 6,175,196 Photo-sensitive illuminated skate wheel | 31 | 1999 | |
| 6,316,880 Constant or variable brightness flashlight | 13 | 2000 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | May 4, 2015 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
| Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |