US 2015/0204192 A1 · MINE ROOF SUPPORT

Abstract

A yielding mine roof support is provided which is made in the form of a hollow tube made from an epoxy, phenolic, or polyester fibreglass composite.

Dependent claims

1-16. (canceled)

Dependencies are inferred from the claim text.

Facts

Application

14/417,119Filed 22 Jul 2013

Priority

ZA 2012/0552423 Jul 2012

Published

23 Jul 2015

Term ends

Not estimatedThe source records don’t support an estimate.

E21D 15/005
Props ; Chocks , e.g. made of flexible containers filled with backfilling material: characterised by the material
E21D 15/02
Props ; Chocks , e.g. made of flexible containers filled with backfilling material: non-telescopic props
E21D 15/502
Component parts or details of props: prop bodies characterised by their shape, e.g. of specified cross-section
E21D
Shafts

A yielding mine roof support is provided which is made in the form of a hollow tube made from an epoxy, phenolic, or polyester fibreglass composite.