Mine roof truss

Details Mine roof truss Mine roof truss

1986-09-30

1988-06-07

Corbin, David H.

Hydraulic and earth engineering

Earth treatment or control

Shoring, bracing, or cave-in prevention

405259, E21D 2100

Patent

active

047493100

ABSTRACT:
A mine roof truss including opposed angularly disposed roof bolts, a horizontal truss member extending between the roof bolts, and couplings connecting the roof bolts to the truss member. Each coupling comprises a housing having walls forming a cavity into which the head of the roof bolt and an end of the truss member are inserted and secured. The end of the truss member is provided with a T-shaped head which is inserted through a slot in the housing wall leading to the cavity, following which the truss member is rotated relative to the housing to lock the truss member to the coupling. The roof bolt head and truss member are pivotally connected with the coupling to permit adjustments thereof when installed on an uneven roof surface.

REFERENCES:
patent: 3505824 (1970-04-01), White
patent: 4596496 (1986-06-01), Tyrell et al.
patent: 4630974 (1986-12-01), Sherman

Affiliated with

Also associated with

Rating

Mine roof truss does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Mine roof truss, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mine roof truss will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-841674