Device for opening connection to lined pipe
AssigneePicote Solutions Oy Ltd.
InventorMika Lokkinen
Life of this patent
Estimating the term…
Abstract
A device for opening a connection to a lined pipe is disclosed. The device has a body that includes a front end and a rear end and being rotatable about a rotation axis. The device also has a drill head that has multiple cutters for puncturing and enlarging a hole in a liner, and multiple side cutters have at least one cutting edge parallel to the rotation axis. A safety ring is disposed on the body between the drill head and the side cutters. The safety ring has a circular periphery extending beyond the drill head and the side cutters in a direction perpendicular to the rotation axis.
Claims6
A device for opening a connection to a lined pipe, comprising:
- a body having a front end and a rear end opposite to the front end and being rotatable about a rotation axis,
- a drill head at the front end of the body, the drill head comprising multiple cutters for puncturing and enlarging a hole in a liner,
- multiple side cutters on the body disposed between the front end and the rear end, each side cutter having at least one cutting edge parallel to the rotation axis,
- a safety ring disposed on the body between said drill head and said side cutters, the safety ring having a circular peripheral surface extending beyond said drill head and said side cutters in a direction perpendicular to the rotation axis;
- the drill head at the front end of the body having four step-wise tapered cutters, each of the cutters having multiple cutting edges parallel to the rotation axis and multiple cutting edges perpendicular to the rotation axis;
- and
- spacers being disposed between adjacent cutters of the drill head for reducing cutting depth of the cutters.
A device for opening a connection to a lined pipe, comprising:
- a body having a front end and a rear end opposite to the front end and being rotatable about a rotation axis,
- a drill head at the front end of the body, the drill head comprising multiple cutters for puncturing and enlarging a hole in a liner,
- multiple side cutters on the body disposed between the front end and the rear end, each side cutter having at least one cutting edge parallel to the rotation axis,
- a safety ring disposed on the body between said drill head and said side cutters, the safety ring having a circular peripheral surface extending beyond said drill head and said side cutters in a direction perpendicular to the rotation axis;
- wherein there are four side cutters at the front end of the body, each side cutter having one or two right-angled cutting edges parallel to the rotation axis;
- and
- spacers being disposed between adjacent side cutters for reducing cutting depth of the side cutters.
Dependencies are inferred from the claim text.