Truss bracket

Details Truss bracket Truss bracket

1985-07-25

1987-07-14

Husar, Cornelius J.

Hydraulic and earth engineering

Earth treatment or control

Shoring, bracing, or cave-in prevention

405259, E21D 2000

Patent

active

046799672

ABSTRACT:
A truss bracket for use in a mine roof support system using double tie bars. The truss bracket comprises a substantially flat, planar member for engagement with the mine roof, and an extension depending normal to the planar member. The extension has an angularly disposed channel in communication with an aperture in the planar member. The channel and aperture accommodate a rib or anchor bolt for attachment of the truss bracket. The extension also includes a pair of openings spaced from each other and from the planar member. Each of the openings accommodate a tie bar in parallel relationship to the planar member and to each other. Most preferably, the truss bracket further comprises a tie bar support ring angularly attached to the planar member to accommodate a tie bar in the event of sagging.

REFERENCES:
patent: 3427811 (1969-02-01), White
patent: 3509726 (1970-05-01), White
patent: 4395161 (1983-07-01), Wilson et al.
patent: 4456405 (1984-06-01), Galis
patent: 4498816 (1985-02-01), Korpela et al.
patent: 4596496 (1986-06-01), Tyrell et al.
patent: 4601616 (1986-07-01), Barish et al.

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