Patent ID: 11866906
Assignee: nan
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 0:
1. A hollow boring auger for use in boring a hollow trench about a pole, the hollow boring auger including:
a first mounting part and a second mounting part connected one to the other and movable between an open state and a closed state enabling the first and second mounting parts to be closed around the pole, encircling the pole, wherein the first mounting part and the second mounting part form an upper portion of the hollow boring auger;
a first auger part and a second auger part attachable to the first mounting part and second mounting part and forming in the closed state the hollow boring auger encircling the pole and projecting downwardly from the first and second mounting parts, wherein the first auger part and the second auger part form a lower portion of the hollow boring auger;
a first semi-circular attachment plate attachable between the corresponding first mounting part and the first auger part and a second semi-circular attachment plate attachable between the corresponding second mounting part and the second auger part, and once attached the opening and closing of the first mounting part and the first auger part, and the second mounting part and the second auger part, is together, so as to create jaws which can be closed about a base of the pole;
a rotation apparatus configured to rotate the auger about the pole to bore a hole, wherein the rotation apparatus is housed in the first and second mounting parts;
a cylindrical collar projecting upwardly from the first and second mounting parts and configured to encircle the pole in the closed state, wherein the collar extends at least 250 millimeters along a length of the pole, in use;
wherein the upper portion of the hollow boring auger and the lower portion of the hollow boring auger are removably attached to one another by fixings via the first semi-circular attachment plate and the second semi-circular attachment plate.