Self drilling rock bolt
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 28, 2015
Grant Date -
Mar 19, 2009
app pub date -
Aug 15, 2008
filing date -
Aug 17, 2007
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The present invention relates to a self drilling rock bolt which may be used in mining applications. Self drilling rock bolts are typically formed by rebars having an axially extending central passageway for water passage and post grouting. Costs of such hollow steel rebars is quite high. In the present invention, a rock bolt is formed from a hollow tubular member which may be steel pipe, and a reinforcing arrangement comprising prestressed concrete type steel strand wound around the outside of the hollow tubular member.
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