E - Fixed Constructions – 21 – D
Patent
E - Fixed Constructions
21
D
E21D 21/02 (2006.01)
Patent
CA 2697711
An engagement head for a rock bolt tensioning assembly is disclosed that is profiled to include at least one key surface to inhibit rotation of the engagement head relative to a rock surface, either by direct engagement with the rock surface or through abutment with a plate-like member that is engageable with the rock surface.
Arnot Jeremy R.
Craig Peter H.
Farrington Bernard
Gaudry Timothy J.
Hinton Harold G.
Dimock Stratton Llp
Jennmar Corporation
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