Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Torque responsive nut or bolt driving connection – Frangible connection
Patent
1997-07-03
1999-02-23
Saether, Flemming
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Torque responsive nut or bolt driving connection
Frangible connection
411 8, 411429, 4052592, F16B 3100, E21D 2000
Patent
active
058736891
ABSTRACT:
A mine roof support system which includes a steel anchor rod and a threaded fastener. The rod has a threaded end portion, and which is adapted for positioning in a bore hole so that the threaded end portion projects outwardly from a rock face. The threaded fastener includes a body having a pair of opposing end portions and a bore which extends along its central axis. Internal threads complimentary to those on the rod are formed along part of the axial length of the bore, whereby the relative rotation of the fastener and rod moves the rod axially through the bore. A cap member is detachably coupled to one end portion of the fastener covering part of the bore. When coupled, the cap member acts as a positive stop which limits relative movement of the rod axially through the fastener bore, and which when detached allows the fastener to run freely along the threaded portion of the rod.
REFERENCES:
patent: 1933117 (1933-10-01), Markle
patent: 4618291 (1986-10-01), Wright
patent: 4662795 (1987-05-01), Clark
patent: 5282698 (1994-02-01), Wright et al.
patent: 5352065 (1994-10-01), Arnall
patent: 5352066 (1994-10-01), Schaeffer et al.
1995 Frazer & Jones Mine Roof Support Anchors Catalogue--p. 6.
Mensour Peter
Steklasa Mark
Tremblay Richard
Milad Mansour
Saether Flemming
LandOfFree
Low torque threaded fastener and mine roof support system using does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Low torque threaded fastener and mine roof support system using , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low torque threaded fastener and mine roof support system using will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-300832