Hydraulic and earth engineering – Earth treatment or control – Rock or earth bolt or anchor
Patent
1981-11-19
1983-07-26
Byers, Jr., Nile C.
Hydraulic and earth engineering
Earth treatment or control
Rock or earth bolt or anchor
405288, E21D 2000
Patent
active
043951619
ABSTRACT:
A generally rectangular transition plate for connecting inclined and horizontal chords of a mine roof truss has one face defining a generally flat planar plate bearing surface adapted to be closely received against a mine roof. The sides and one end of the plate are bent outwardly from the one face. A first opening in the plate adjacent the one end is adapted to receive a mine roof bolt. A second opening in the plate is located adjacent the other end of the plate. A saddle portion extends between the other end of the plate and the second opening and is adapted to receive a truss tie member. The plate has a low profile and sufficient rigidity to sustain the forces present in the truss.
REFERENCES:
patent: 1559560 (1925-11-01), Doughty
patent: 2371789 (1945-03-01), Batten
patent: 2667037 (1954-01-01), Thomas et al.
patent: 3415066 (1968-12-01), Williams
patent: 3427811 (1969-02-01), White
patent: 3505824 (1970-04-01), White
patent: 3507121 (1970-04-01), Morfeldt
patent: 3509726 (1970-07-01), White
patent: 4349300 (1982-09-01), Kelley
Eben C. Frederick
Meyer Charles L.
Schaeffer Charles W.
Wilson Edwin B.
Bethlehem Steel Corporation
Byers Jr. Nile C.
Delaney M. J.
Iverson J. I.
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