Sound absorbing material, muffler using the sound absorbing material, and method for forming sound absorbing layer thereof
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 22, 2002
Grant Date -
Jun 13, 2002
app pub date -
Dec 11, 2000
filing date -
Dec 11, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
In order to provide a sound absorbing material superior in acid resistance, alkali resistance and sound absorbing quality and a sound absorbing layer using this sound absorbing material, multiple pieces of basalt yarn obtained by dissolving basalt to be continuous fibers are bundled by a fiber bundling agent to acquire a bundled material, and the bundled material is fibrillated to obtain a bulky sound absorbing material. Moreover, the sound absorbing material is arranged on the outer periphery of a perforated pipe constituting a muffler to form a sound absorbing layer.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
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