Mine support cribs

Details Mine support cribs Mine support cribs

E - Fixed Constructions

21

D

E21D 15/02 (2006.01) E21D 15/04 (2006.01) E21D 15/48 (2006.01)

Patent

CA 2188226

The invention is concerned with a mine support crib of the type which comprises a series of superimposed layers of elongate chocks. There is a plurality of parallel, spaced apart chocks in each layer with the chocks in one layer arranged transversely to the chocks in the adjacent layer or layers so that the chocks in a given layer, other than the bottom layer, cross the chocks in the layer below at crossing points which are located inwardly of the ends of the chocks. According to the invention. operatively upper and lower surfaces of the chocks are formed with notches at the crossing points. The notches interlock with one another to lock the chocks together. The notches are of such depth that portions of the chocks which are located between and beyond the notches bear on corresponding portions of chocks in the next layer but one below.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-2068486