Self-ventilating footwear
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 4, 1997
Issued Date -
N/A
app pub date -
Apr 6, 1995
filing date -
Oct 18, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Ventilated footwear has in a sole thereof a pumping chamber formed in a heel portion of the sole and bounded by two parallel top and bottom walls and a peripheral wall which is resilient to bias the pumping chamber and has converging upper and lower wall portions extending from the top and bottom walls of the chamber. Air is supplied to the pumping chamber through an air inlet passage and is exhausted from the pumping chamber via an air outlet passage.
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