Large diameter tubular lifting apparatuses and methods
US10900298B2 · kind B2 · utility
0Cited by
3References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 29, 2018 |
| Grant date | Jan 26, 2021 |
| Priority date | — |
| Expiry date | Jan 29, 2039 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B19/155
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A lifting elevator includes a first elevator segment having a first plurality of slips, a second elevator segment having a second plurality of slips, and a hinge. The first elevator segment and the second elevator segment each have a swept angle of about 180°, and each of the first plurality of slips and the second plurality of slips includes a die configured to grip an external surface of a pipe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.