VEHICLE WARNING APPARATUS
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Jul 19, 2012
app pub date -
Jan 5, 2012
filing date -
Jan 18, 2011
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A vehicle warning apparatus may include a supersonic speaker for outputting a supersonic wave that is equipped in a parametric speaker. The supersonic speaker includes a supersonic vibrator that generates a supersonic wave. A waterproof sheet and louver is arranged to cover a speaker opening in order to protect the supersonic vibrator from water and other foreign particles. Specifically, the waterproof sheet is arranged to cover the speaker opening at a distance L1 from the supersonic vibrator, where L1=L0×n/4±1/4. The louver is disposed on the other side of the waterproof sheet, such that the waterproof sheet is between the louver and the supersonic vibrator. The distance between the louver and the waterproof sheet is L2, where L2=L0×n/4±1/4. For both L1 and L2, L0 is the wavelength of the supersonic wave, and n is an odd number.
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