Piezoelectric ceramic loudspeaker headphone structure
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 23, 2013
Grant Date -
Jul 5, 2012
app pub date -
Jan 3, 2011
filing date -
Jan 3, 2011
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A piezoelectric ceramic loudspeaker headphone structure includes a positioning frame having an open front end and an open rear that form a circumferential step extending along an inner circumference of the positioning frame. A steel sheet having an area approximately equal to the open front end of the positioning frame is mounted to and closes the open front end of the positioning frame. A vibrating member is received in and positioned by the circumferential step so as to close the rear open end of the positioning frame. The positioning frame with the steel sheet and the vibrating member respectively closing the front and rear ends thereof forms a closed chamber. A sound-making member that is formed by stacking multiple ceramic layers has a surface area less than that of the steel sheet and is attached to an outside surface of the steel sheet to constitute a sound-making module.
First Claim
Family
International Classification(s)
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