ACOUSTIC CONVERSION DEVICE FOR ACTIVE NOISE CONTROL
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
N/A
app pub date -
Mar 24, 2014
filing date -
Mar 24, 2014
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
An acoustic conversion device for an active noise control including a protection member is provided. Since the protection member hides an entire opening, all of water and foreign matters which pass through the opening arrive at an upper surface of the protection member. Further, since the protection member hides the entire speaker unit, it is possible to protect a vibration plate of the speaker unit from water and foreign matters which drop from the protection member. Therefore, water and foreign matters are prevented from adhering to the vibration plate, it is possible to prevent lowest resonance frequency from being varied, emitted sound can be less prone to be deviated from opposite phase of noise, and it is possible to effectively suppress or remove noise.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully