Hydraulic and earth engineering – Earth treatment or control – Shoring – bracing – or cave-in prevention
Patent
1985-03-13
1986-12-23
Husar, Cornelius J.
Hydraulic and earth engineering
Earth treatment or control
Shoring, bracing, or cave-in prevention
405259, E21D 2100
Patent
active
046309748
ABSTRACT:
An improved roof support system for a mine or the like is of the type which includes a pair of plates secured to a roof of the mine at opposite sides thereof adjacent opposing ribs of the mine and an enlongated reinforcing member extending horizontally and transversely of the mine between the pair of plates. The reinforcing member has a first rod and a second rod threadably joined to an adjustable sleeve for joining the first rod and the second rod while being able to vary an overall length of the reinforcing member. Each of the rods has a bolt head thereon including a transversely extending working surface. Each of the plates has an opening therein for respective receipt of the bolt heads of the first rod and the second rod of the reinforcing member therethrough. Each of the plates has a force bearing surface adjacent the opening therein which is capable of respectively making contact at least a part of working surface of the first rod and the second rod. The reinforcing member is capable of producing tension between the plates as each of the working surfaces respectively makes contact with its corresponding force bearing surface. The tension can be varied by rotation of one of the rods relative to the sleeve. There is also included a method of supporting a roof of a mine or the like.
REFERENCES:
patent: 628416 (1899-07-01), Robinson
patent: 1955353 (1934-04-01), Wiley
patent: 2246457 (1941-06-01), Schultz
patent: 2667037 (1954-01-01), Thomas et al.
patent: 3303735 (1967-02-01), Fisher
patent: 3427811 (1969-02-01), White
patent: 3505824 (1970-04-01), White
patent: 3509726 (1970-05-01), White
patent: 3727660 (1973-04-01), Burge
patent: 3731956 (1973-05-01), Hanley
patent: 4274762 (1981-06-01), Johnson
patent: 4349300 (1982-09-01), Kelley
patent: 4395161 (1983-07-01), Wilson et al.
patent: 4498816 (1985-02-01), Korpela et al.
"Current Trends in Roof Truss Hardware", by C. P. Mangelsdorf, University of Pittsburgh, Jul. 19-21, 1982, pp. 1-5.
"Hydraulic Tensioning of a Birmingham Roof Truss", by C. W. Bollier, Peabody Coal Company, pp. 104-112.
Mine Controls Bad Roof with Trusses Bolted on Cycle, by Ken Barish; Coal Age, 5/85, pp. 62-66.
Husar Cornelius J.
Price & Adams
Price, Jr,. Stanley J.
Stodola Nancy J.
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