Vibration electricity generation device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 27, 2017
Grant Date -
Sep 24, 2015
app pub date -
May 29, 2015
filing date -
Jan 22, 2013
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A vibration electricity generation device according to an embodiment of the present invention includes a fixed unit provided with a coil and a movable unit provided with a magnet. The movable unit is supported on the fixed unit in a suspended manner via a pair of coil springs. The movable unit is thus configured to vibrate in the up and down direction with a rather simple structure. A coil supporting member of the fixed unit is configured to cover a coil accommodating portion from both thickness direction sides thereof and a friction reducing treatment is applied to the surfaces of both thickness direction sides of the coil supporting member. The coefficient of kinetic friction is thus maintained low enough and a pair of guide shafts conventionally used are not required, thereby the electricity generation efficiency being improved.
First Claim
Other Claims data not available
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
- 11 Citation Count
- H02K Class
- 92.38 % this patent is cited more than
- 8 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Dec 27, 2024 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Dec 27, 2028 |
