Patent ID: 11867014
Assignee: ALTUS INTERVENTION (TECHNOLOGIES) AS
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 6:
7. The drilling assembly according to claim 1, wherein the rotatable drive assembly has a proximal end and a distal end, the drilling assembly comprises:
an adapter;
a drive shaft having a distal end and a proximal end, the drive shaft being connected to the adapter at the proximal end of the drive shaft and to the drill bit assembly at the distal end of the drive shaft, said drive shaft being formed with a polygonal cross-section at the proximal end;
a slidable house comprising a central channel and provided with an external circular distal end connected to the cutting assembly;
a spring encircling the drive shaft between the adapter and the slidable house, and the drive shaft is formed with an enlarged diameter at the distal portion, said enlarged diameter forms a shoulder.