Deformed bar for adhesion and applying tension

Details Deformed bar for adhesion and applying tension Deformed bar for adhesion and applying tension

1988-01-22

1989-08-15

Wilson, Neill R.

Expanded, threaded, driven, headed, tool-deformed, or locked-thr

Externally threaded fastener element, e.g., bolt, screw, etc.

Thread or shank structure

411 82, 411421, F16B 3504

Patent

active

048569526

ABSTRACT:
A rock-bolt bar having raised deformation its entire length and having an end portion threaded to receive a standard helically threaded nut. The raised deformations are all raised to the same height above a minor diameter of the bar and the depths of the threaded portions of the raised portions do not extend to the minor diameter. The equal height raised portions may be of various configurations, all extending longitudinally the entire length of the bar.

REFERENCES:
patent: 2562516 (1951-07-01), Williams
patent: 4479748 (1984-10-01), Uhlmann
patent: 4584247 (1986-04-01), Mulholland
International Search Report of PCT/AU 86/00014.

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