Rockbolt anchoring head

Details Rockbolt anchoring head Rockbolt anchoring head

1992-04-07

1993-10-19

Lindsey, Rodney M.

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

Having separate expander means

Relatively sliding wedge surfaces

411354, F16B 1304

Patent

active

052539644

ABSTRACT:
The rockbolt anchoring head comprises a first wedge member with a wedge surface and a passage to receive the rockbolt, and a second wedge member with a complemental wedge surface. The second wedge member is connected to the rockbolt. The wedge surfaces of the first and second wedge members are arranged in slideways relationship with one another, and a spring acts between the members to cause relative slideways movement between the wedge surfaces. In combination, the wedge members form a body which is rectangular in a cross-section taken transversely to the axis of the rockbolt.

REFERENCES:
patent: 1037277 (1912-09-01), Martin
patent: 2774273 (1956-12-01), Olson
patent: 3274744 (1966-09-01), Blum et al.
patent: 3358549 (1967-12-01), Lerich et al.
patent: 3456551 (1969-07-01), Ishihara
patent: 3528691 (1970-09-01), Matich, Jr.
patent: 4515669 (1985-05-01), Dimond et al.
patent: 4706437 (1987-11-01), Boecker, Jr.

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