Rock bolting

Details Rock bolting Rock bolting

1985-04-15

1986-10-28

Husar, Cornelius J.

Hydraulic and earth engineering

Earth treatment or control

Rock or earth bolt or anchor

411531, 411534, E21D 2100, F16B 4300

Patent

active

046195599

ABSTRACT:
A rock bolt assembly incorporating a friction reducing washer of plastics material between the nut and the plate washer to give an increased tension in the bolt for a given torque.

REFERENCES:
patent: 2731065 (1956-01-01), Powers
patent: 3144803 (1964-08-01), Briles
patent: 3422721 (1969-01-01), Yonkers
patent: 4052860 (1970-10-01), Alterman
patent: 4183699 (1980-01-01), Donan
patent: 4362449 (1982-12-01), Hlinsky

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