Patent ID: 6105684
Filing Date: 2000-08-22
Classification: E21B,E21D

Abstract:
A roof bolt installation apparatus includinga drill stabilizing means including a base having a pair of parallel cylindrical bores therein and two stabilizing rods, each of which is extendable from said base and which is slidably located in one of said bores, and each of said rods having a distal end, and connection means connecting said distal ends to hold said rods together to ensure said rods slide in said cylindrical bores in unison,a drilling unit carriage including a first rod and a second rod spaced apart from and parallel to said first rod,a drilling unit which is adapted to rotatably carry a drill, said drilling unit being slidably mounted on said drilling unit carriage first rod, andmeans for moving said drilling unit along said drill stabilizing means, said moving means includinga sleeve attached to said drill stabilizing means base and surrounding and slidably receiving a portion of said drilling unit carriage second rod,means between said drill stabilizing means base and said drilling unit carriage for moving said drilling unit carriage along said drill stabilizing means, andmeans for moving said drilling unit relative to said drilling unit carriage.