Mine drill system with adapter
AssigneeJ.H. Fletcher & Co.
InventorsGregory E. Hinshaw, Timothy D. Burgess
Life of this patent
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Abstract
A system for securing different first and second drill tools to a drill head including a socket is provided. The system includes a chuck adapted for positioning at least partially within the socket of the drill head, the chuck including a first opening for receiving the first drill tool. An adapter is configured for forming a selective locking engagement within the first opening of the chuck, the adapter including a second opening for receiving the second drill tool. The selective locking engagement may comprise a “twist lock” engagement, and the adapter may be arranged for receiving a roof bolt. Related methods are also disclosed.
Claims19
A system for securing different first and second drill tools to a drill head including a socket, comprising:
- a chuck adapted for positioning at least partially within the socket of the drill head, the chuck including a first opening adapted for engaging the first drill tool;
- and
- an adapter configured for forming a selective locking engagement within the first opening of the chuck for preventing withdrawal of the adapter from the chuck in a drilling direction, or allowing the adapter to be withdrawn from the chuck in the absence of the locking engagement, the adapter including a second opening adapted for engaging the second drill tool;
- wherein the chuck includes a plurality of internal projections within the first opening and the adapter includes a plurality of external projections alternating in position with the internal projections to form the selective locking engagement;
- wherein the plurality of internal projections comprise a first set of projections having a first circumferential spacing and a second set of projections having a second circumferential spacing greater than the first circumferential spacing, whereby the plurality of external projections on the adapter may pass through the first set of projections and move within the second set of projections when the adapter is twisted within the chuck to form the locking engagement.
A system for drilling using a drill head including a socket, comprising:
- first and second drill tools for securing to the socket of the drill head, the first drill tool having a first end portion with a first cross-sectional shape and the second drill tool having a second end portion with a second cross-sectional shape different from the first cross-sectional shape;
- a chuck adapted for positioning at least partially within the socket of the drill head, the chuck including a first opening adapted for engaging the first end portion of the first drill tool;
- and
- further comprising an adapter configured for forming a selective locking engagement within the first opening of the chuck for preventing withdrawal of the adapter from the chuck in a drilling direction, or allowing the adapter to be withdrawn from the chuck in the absence of the locking engagement, the adapter including a second opening for engaging the second end portion of the second drill tool.
A system for securing different first and second drill tools to a drill head including a socket, comprising:
- a chuck adapted for positioning at least partially within the socket of the drill head, the chuck configured for engaging the first drill tool;
- further comprising an adapter configured for engaging the second drill tool, and
- means for selectively forming a secure locking engagement for preventing withdrawal of the adapter from the chuck in a drilling direction, or allowing the adapter to be withdrawn from the chuck in the absence of the secure locking engagement.
Dependencies are inferred from the claim text.