Patent ID: 9404364
Filing Date: 2016-08-02
CPC Classification: E21B,E21D

Claim Text:
1. A bolt centralizer for a bolting feed in a rock bolt system, the bolt centralizer comprising: a flexible body capable of elastically flexing from an upright posture for centralizing a rock bolt along a drilling and bolting axis to a folded posture that permits a bolting feed to advance such that the flexible body folds about a folding axis that is perpendicular to the drilling and bolting axis; wherein the centralizer comprises a passage for guiding the rock bolt into a hole drilled by the rock bolt system such that the passage is aligned with the drilling and bolting axis when the flexible body is upright and is folded below the drilling and bolting axis when the flexible body is folded; and wherein the centralizer comprises a base for fastening the centralizer to a sliding carriage adapted to travel over rails of the bolting feed.