Drill bore protection device and method
US11781381B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Sep 3, 2020 |
| Grant date | Oct 10, 2023 |
| Priority date | — |
| Expiry date | Jan 13, 2041 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/103
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A drill bore protection device and method for protecting a drill bore are provided. The drill bore protection device includes an elongated member. The elongated member is defined by a front end and a rear end. A first sleeve is placed on the elongated member next to the front end of the elongated member. Additionally, a second sleeve is placed on the elongated member next to the rear end of the elongated member. The first sleeve and the second sleeve each have an open end and a closed end. The closed ends of the first sleeve and the second sleeve face the front end of the elongated member, while the open ends of the first sleeve and the second sleeve face the rear end of the elongated member. The first sleeve defines a first interior cavity. A liner is disposed in the first interior cavity of the first sleeve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.