HDD reamer having removable cutting teeth
US11578537B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 23, 2021 |
| Grant date | Feb 14, 2023 |
| Priority date | — |
| Expiry date | Nov 23, 2041 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B7/28
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A reamer for drill string pullback of a horizontal directional drill includes a shaft portion defining a central axis and a first end configured for attachment with a drill string of the horizontal directional drill. A plurality of vanes extend radially from an outer periphery of the shaft, each of the plurality of vanes defining an outer peripheral tooth base surface. On each of the plurality of vanes, a plurality of cutter teeth are individually and removably secured along the outer peripheral tooth base surface thereof, each one of the plurality of cutter teeth including a body and a PDC insert manufactured separately from the body and joined therewith. Each cutter tooth of the plurality is coupled to the respective one of the plurality of vanes by a removable fastener extending at least partially through the cutter tooth and at least partially through the one of the plurality of vanes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.