Telescopic mine roof support
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 24, 2016
Grant Date -
Sep 24, 2015
app pub date -
Oct 7, 2014
filing date -
Aug 30, 2012
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A longitudinally yieldable support for underground roof support includes a first support section with a first elongate outer shell filed with a solid compressible filler material and a second support section filled with a second solid compressible filler material with a second elongate outer shell extending above the first elongate outer shell. The second support section has density that is greater than a density of the first solid compressible filler material. A pair of attachment members are coupled to the second elongate outer shell and are configured for lifting the second elongate outer shell relative to the first elongate outer shell and for securing the second elongate outer shell relative to the first elongate outer shell once lifted.
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