Cold weather breathing apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 13, 1998
Grant Date -
N/A
app pub date -
Oct 24, 1996
filing date -
Oct 24, 1996
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A breathing device including a heat exchanger module retained adjacent the mouth of a user by a fabric holder. The heat exchanger module includes a wall surrounding a non-linear, tubular flow passage extending between a first air vent and a second air vent. A heat exchanging medium comprising a woven copper cloth is disposed within the flow passage. The flow passage includes a larger cross-sectional area adjacent the first air vent than adjacent the second air vent.
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