Mineral bits and mounts
AssigneeCarriere Industrial Supply Limited
InventorOswald D. ZAAYMAN
Life of this patent
Estimating the term…
Abstract
Mineral bits (10, 100) and associated mounts (30, 116, 200) for use during excavation and mining operations are disclosed. An exemplary bit (10) has a front region (12) and an opposite rear region (14) and comprises a head portion (16) and a mounting portion (18) secured to the head portion (16). The mounting portion (18) can be configured to be releasably retained by a mount (30). A rounded transition (22) disposed in the front region (12) of the bit between the head portion (16) and the mounting portion (18) provides a clearance (C) between the head portion (16) and the mount (16). Mineral bits (10, 100) disclosed can be inserted into and withdrawn from mounts (30, 116, 200) by linear and/or rotational movement.
Claims32
A mineral bit for use during excavation and mining operations, the bit having a front region and an opposite rear region, the bit comprising:
- a head portion;
- a mounting portion secured to the head portion and configured to be inserted into a mount by relative rotational movement between the bit and the mount and to be releasably retained by a mount;
- a rear shoulder surface disposed on the head portion in the rear region of the bit and configured to interface with the mount when the mounting portion is releasably retained by the mount,
- the mounting portion comprising an interlocking feature disposed in the front region and having a first interlocking surface facing substantially in opposite direction from the rear shoulder surface and configured to interface with the mount.
9-15. (canceled)
An apparatus for use during excavation and mining operations, the apparatus comprising:
- a mount having a receptacle;
- and
- a mineral bit having a front region and an opposite rear region, the mineral bit comprising:
- a head portion;
- a mounting portion secured to the head portion, at least part of the mounting portion being configured to be inserted into the mount by relative rotational movement between the bit and the mount and to be releasably retained in the receptacle of the mount;
- and
- a rear shoulder surface disposed on the head portion in the rear region of the bit and configured to interface with the mount when the mounting portion is releasably retained by the mount,
- the mounting portion comprising an interlocking feature disposed in the front region and having a first interlocking surface facing substantially in opposite direction from the rear shoulder surface and configured to interface with the mount.
The apparatus as defined in 18, wherein
- the clearance provided by the front rounded transition is configured to permit insertion of a bit-removal tool between the bit and the mount.
28-42. (canceled)
46-58. (canceled)
A mount for releasably retaining a mineral bit, the mount comprising:
- a receptacle for receiving at least a portion of the bit;
- an interlocking feature for engagement with the bit, the interlocking feature being configured to allow withdrawal of the bit from the mount by rotation of the bit relative to the mount;
- and
- an access hole to the receptacle configured to permit access to a tool for initiating rotation of the bit when the portion of the bit is received in the receptacle,
- wherein the interlocking feature comprises a protrusion inside the receptacle of the mount, forming a narrowed passage of the mount, the protrusion having an upper surface and a lower surface, the supper and lower surface having different shapes, the lower surface of the protrusion being configured to interface with an upper surface of an interlocking feature of the bit when the bit is received in the receptacle of the mount.
64-67. (canceled)
Dependencies are inferred from the claim text.