Mine roof support plate

Details Mine roof support plate Mine roof support plate

1979-02-08

1981-02-10

Taylor, Dennis L.

Hydraulic and earth engineering

Earth treatment or control

Rock or earth bolt or anchor

411 61, 411 72, E21D 2100, F16B 2900

Patent

active

042498350

ABSTRACT:
A support plate for a mine roof including a substantially flat body engageable with the mine roof, the body having an enlarged central opening through which are passed one end of a roof bolt on which is threaded an expansion shell which is inserted into a mine roof opening. Ribs extend longitudinally of the flat body on both sides of the central opening for additional strength. The ribs are spaced a predetermined distance apart on opposite sides of the central opening. Centering members are provided on the body portion intermediate the ribs on opposite sides of the central opening, the centering members and ribs serving to center the washer and bolt portion of the bolt assembly.

REFERENCES:
patent: D27427 (1897-07-01), Purdy
patent: 2369865 (1945-02-01), Spencer
patent: 2972387 (1961-02-01), Severson
patent: 3238731 (1966-03-01), Seifert et al.
patent: 3478523 (1969-11-01), Reusser et al.
patent: 3544053 (1970-12-01), Ingalls

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