Drilling apparatus with a unitary bearing housing
US10472890B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 8, 2015 |
| Grant date | Nov 12, 2019 |
| Priority date | — |
| Expiry date | Sep 14, 2035 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B7/067
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A drilling apparatus having a drive section and a bearing section axially distal to the drive section. The bearing section includes a unitary bearing housing defining a bearing housing bore, a driveshaft received within the bearing housing bore and rotatable relative to the bearing housing, and a bearing assembly radially interposed between the bearing housing and the driveshaft for rotatably supporting the driveshaft within the bearing housing bore. The unitary bearing housing may be connected directly with a transmission housing. An axis intersection point between a primary axis of the drilling apparatus and the driveshaft axis may be axially located between a proximal bearing housing end and a distal bearing housing end. One or more stationary bearing components may be non-rotatably engaged with one or more sleeves which are non-rotatably engaged with the bearing housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.