Elevator for heavy load pipe lifting, pipe for such elevator and pipe handler assembly comprising such elevator
US12158044B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 3, 2022 |
| Grant date | Dec 3, 2024 |
| Priority date | — |
| Expiry date | Aug 3, 2042 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B19/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Disclosed is an elevator for holding and end portion of a pipe in a drill tower. The elevator includes a hole from which, in operational use, an end portion of the pipe is suspended. The minimum diameter of the end portion of the pipe is selected larger than the minimum diameter of the hole, wherein sidewalls of the hole are shaped with a receiving surface for receiving correspondingly-shaped sidewalls of the end portion of the pipe. Similarly, sidewalls of the end portion of the pipe are shaped with an engagement surface for engagement with correspondingly-shaped sidewalls of the hole. Both the receiving surface and the engagement surface includes a first part and a second part neighbouring the first part, the first part defining a frustoconical shape having a first conicity, and the second part defining a shape having at least partially a second conicity lower than the first conicity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.