Mine roof supports

Details Mine roof supports Mine roof supports

1977-09-23

1978-11-14

Stein, Mervin

Hydraulic and earth engineering

Earth treatment or control

Shoring, bracing, or cave-in prevention

E21D 1702

Patent

active

041249844

ABSTRACT:
A mine roof support embodying a roof engaging cover and a forepole. The cover is composed of a leading part and a trailing part relatively adjustable with respect to one another. A base member is provided with a plurality of hydraulic rams engagable with said cover for raising and lowering same. The forepole is capable of being extended and retracted with respect to the leading part of the cover.

REFERENCES:
patent: 3240021 (1966-03-01), Meriaux et al.
patent: 3732699 (1973-05-01), Stevenson

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1296954