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Douglas G. Valentine Patents |
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Inventor: Valentine; Douglas G.
Address: Sudbury, CA
No. of patents: 1
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 4765778 |
Hardened material supported rock bolt and apparatus for installing same |
August 23, 1988 |
| A rock bolt system (10) including a mechanical rock bolt (12) having an interior channel (24) therein and a feeder attachment (14). An anchor may be affixed to the distal end of the rock bolt (12). An aperture (22) extends from the rock bolt (12). The feeder attachment (14), capable of |
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