Slim microspeaker
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 28, 2017
Issued Date -
N/A
app pub date -
Dec 14, 2015
filing date -
Dec 15, 2014
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A microspeaker includes a frame, magnetic circuit, voice coil configured to generate vibration by mutual electromagnetic force with the magnetic circuit, vibration plate configured to vibrate together according to the vibration of the voice coil to generate a sound, and suspension configured to guide a vibration direction of the vibration plate and voice coil. The suspension has a central portion attached to the voice coil, an annular outer circumferential portion formed to be spaced apart from the central portion by a predetermined interval, and a connection portion connecting the central and outer circumferential portions and configured to perform a damping function. The central portion has an outer end having the same height as the connection and outer circumferential portions, an inner end positioned to be higher than the outer end, and a step portion connecting the outer end and inner end. The voice coil is attached to the inner end.
First Claim
Other Claims data not available
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
- 10 Citation Count
- H04R Class
- 20.74 % 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 | May 28, 2025 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | May 28, 2029 |
