Roof bolt with expansion shell and threaded nut

Details Roof bolt with expansion shell and threaded nut Roof bolt with expansion shell and threaded nut

1986-09-17

1987-07-07

Corbin, David H.

Hydraulic and earth engineering

Earth treatment or control

Chemical

411 2, 411 39, E21D 2002

Patent

active

046783741

ABSTRACT:
An elongated rod with an expansion shell assembly positioned on the upper end portion thereof is advanced behind a resin cartridge system into a bore hole drilled in a rock formation. A bearing plate and a stop nut are positioned on the end of the rod emerging from the bore hole. Unitary rotation of the nut and rod in a preselected direction while maintaining the shell assembly in an unexpanded condition effects mixing of the resin components. Continued rotation of the nut and rod after the resin components are mixed effects expansion of the shell into engagement with the wall of the bore hole to anchor the rod in the bore hole. The rotation applied to the nut after setting of the shell permits the nut to advance on the lower end of the rod to urge the bearing plate into compressive relation with the rock formation to put the rod under tension without interrupting rotation to allow the mixed resin to cure.

REFERENCES:
patent: 3877235 (1975-04-01), Hill
patent: 4100748 (1978-07-01), Hansen
patent: 4295761 (1981-10-01), Hansen
patent: 4347020 (1982-08-01), White et al.
patent: 4516886 (1985-05-01), Wright

Affiliated with

Also associated with

Rating

Roof bolt with expansion shell and threaded nut 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 bolt with expansion shell and threaded nut, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Roof bolt with expansion shell and threaded nut will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1659893