1974-12-10
1976-09-14
Shapiro, Jacob
85 61, E21D 2100
Patent
active
039799182
ABSTRACT:
The present invention relates to chemical anchor rock bolts and to a method of installing the anchor bolts. Such bolts are provided with a clamping member or nut which is adapted while being driven thereby to remain in fixed engagement with the bolt shank during mixing of the chemical anchor resin. Upon setting of the resin and on application of an increased driving torque to the nut, the nut is tightened as required.
REFERENCES:
patent: 2725843 (1955-12-01), Koski
patent: 3877235 (1975-04-01), Hill
Adams Bruce L.
Burns Robert E.
Lobato Emmanuel J.
Shapiro Jacob
The Titan Manufacturing Company Proprietary Limited
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