Roof-supporting arrangement

Details Roof-supporting arrangement Roof-supporting arrangement

1976-02-13

1976-10-26

Taylor, Dennis L.

E21D 1544

Patent

active

039876349

ABSTRACT:
A mine roof-supporting arrangement comprising a series of assemblies each comprising a cross beam, three shield-type roof-supporting units, and a pair of rams, a center one of said three units being directly secured to the cross beam, and the other two (i.e. outer) units being secured to the cross beam via respective ones of said rams so that each outer unit may be aligned with or trail behind its corresponding center unit depending upon the position of its respective ram, wherein each assembly is arranged (in the normal roof-supporting position of the assemblies) with that one of its outer units which is adjacent a next trailing assembly being so disposed as to trail behind its corresponding center unit and the other outer unit whereby to protect from waste the adjacent outer unit of said next trailing assembly.

REFERENCES:
patent: 2644311 (1953-07-01), Malloy
patent: 3376707 (1968-04-01), Dommann
patent: 3490243 (1970-01-01), Groetschel
patent: 3525227 (1970-08-01), Handcock et al.

Affiliated with

Also associated with

Rating

Roof-supporting arrangement does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-178033