Process for lining tunnels
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 27, 1981
Grant Date -
N/A
app pub date -
Jan 30, 1979
filing date -
May 2, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Plastic hose means, preferably of high pressure polyethylene admixed with a flame retarding agent and treated to render the same antistatic and characterized by a resistance to tearing of at least 15 N/mm.sup.2, an extension of at least 450 percent, a resistance to piercing of at least 1.5 J and a resistance to continued tearing of at least 17 N/mm, are disclosed, as is a process for using the hose means for filling the space between the rock face of a mine or tunnel and the supporting structure therefor.
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