E - Fixed Constructions – 21 – D
Patent
E - Fixed Constructions
21
D
E21D 21/00 (2006.01) E21D 20/00 (2006.01)
Patent
CA 2506342
A mine roof support system for use with bore holes having diameters at between about 1 to 1 3/8 inches includes an elongated metal anchor rod or cone bolt, a threaded fastener and a grout or resin composition used to secure at least part of the anchor rod in a pre-drilled bolt hole. The anchor rod includes an externally threaded outer proximal end portion which is provided with one or more enlarged frustoconical shaped projections. The innermost distal end of the anchor rod further includes at least one axially extending projection which, in a simplified construction, is formed as an elongated tongue shaped member which presents generally planar major side surfaces. The frustoconical shaped projections preferably taper in the direction away from the outer proximal end portion of the anchor rod at an angle of about 3.5°, inclined relative to the longitudinal axis of the anchor rod. The tongue shaped member defines at least one, and more preferably two generally opposing major side surfaces which extend in the axial direction between about 4.5 and 7 cm.
Mansour Milad
Riches Mckenzie & Herbert Llp
LandOfFree
Yieldable cone bolt for use in small diameter bolt holes and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Yieldable cone bolt for use in small diameter bolt holes and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Yieldable cone bolt for use in small diameter bolt holes and... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1708116