Coal face support

Details Coal face support Coal face support

1983-04-05

1985-12-24

Taylor, Dennis L.

Hydraulic and earth engineering

Earth treatment or control

Shoring, bracing, or cave-in prevention

405291, E21D 1544

Patent

active

045603065

ABSTRACT:
A mine roof support comprises a base formed of two base members, a beam disposed therebetween, jacks for lifting the base members or the beam one relative to the other and a jack for advancing the base member or the beam one relative to the other. A roofing bar structure is supported from the base members by extendible props and an elevated platform is disposed between the base and the roofing bar structure. The support is advanced by lifting, advancing and lowering the beam relative to the base members and then lifting, advancing and lowering the base members relative to the beam.

REFERENCES:
patent: 2062657 (1936-12-01), Jay
patent: 3381480 (1968-05-01), Andrews
patent: 3564857 (1971-02-01), Von Hippel
patent: 3603098 (1971-09-01), Groetschel
patent: 3830324 (1974-08-01), Chambers
patent: 3889475 (1975-06-01), Allen
patent: 3921739 (1975-11-01), Rich et al.
patent: 4269546 (1981-05-01), Saunders

Affiliated with

Also associated with

Rating

Coal face support does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1476790