Patent ID: 11970944
Assignee: CARRIERE INDUSTRIAL SUPPLY LIMITED
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 3:
4. An apparatus for use during excavation and mining operations, the apparatus comprising:
a mount having a receptacle; and
a bit having a front region and an opposite rear region, the 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;
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 one or more protrusions serving as an interlocking feature, the one or more protrusions extending laterally from the front region and having a first interlocking surface facing substantially in opposite direction to the rear shoulder surface and configured to interface with the mount; and
a rear rounded transition disposed in the rear region of the bit between the head portion and the mounting portion of the bit, wherein the rear shoulder surface comprises at least a portion of the rear rounded transition.