Patent ID: 11905760
Assignee: EPIROC CANADA INC.
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 0:
1. A core drilling system comprising:
a drill string having a predetermined standardized size; and
a core barrel assembly located within the drill string, the core barrel assembly comprising:
an inner tube head assembly having a latch casing coupled to a latch body;
latches housing within the latch body;
a landing shoulder coupled to the latch body and a spindle; and
an inner tube cap assembly coupled between the spindle and an inner tube cap adapter,

wherein the landing shoulder and the inner tube cap adapter are a first standardized size configured to engage the predetermined standardized size of the drill string,
wherein the latch casing, the spindle, and the inner tube cap assembly are a second size, the second size being different from the first standardized size,
wherein the latches are configured to cooperate with the latch body of the second size and the drill string of the predetermined standardized size, and
wherein the first standardized size is larger than the second size.