Multipartite rock bolt

Details Multipartite rock bolt Multipartite rock bolt

1978-02-17

1979-10-23

Stein, Mervin

Hydraulic and earth engineering

Earth treatment or control

Rock or earth bolt or anchor

403340, E21D 2100

Patent

active

041719247

ABSTRACT:
A multipartite rock bolt includes a plurality of individual discrete elems which are connected to each other at their respective end portions to constitute the rock bolt which is anchored, especially cemented, in a hole of the rock to be consolidated by the rock bolt. The end portions of the elements have complementary recesses therein at which the respective assembled elements overlap each other and the connecting arrangement for connecting the respective end portions includes a projection, particularly a pin which extends transversely of the elongation of the element into the recess and is received in a complementary aperture, particularly a hole, provided at the recess of the other element. The recess is partially bounded by a detaining surface extending substantially longitudinally of the element, and the detaining surface may be inclined relative to the elongation of the element.

REFERENCES:
patent: 317155 (1885-05-01), Lowrie
patent: 336783 (1886-02-01), Bartholomew
patent: 1272131 (1918-07-01), Silberg
patent: 2930199 (1960-03-01), Jarund
patent: 3216306 (1965-11-01), Taylor
patent: 3987635 (1976-10-01), Murphy
patent: 4048875 (1977-09-01), Heinen et al.

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