Method and apparatus for attachment of a secondary tool handling device to a primary tool handling device
US8919841B2 · kind B2 · utility
1Cited by
7References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 5, 2013 |
| Grant date | Dec 30, 2014 |
| Priority date | — |
| Expiry date | Apr 5, 2033 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B19/06
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Embodiments of the invention provide methods and apparatus for a handling system and attachment of a secondary elevator, and/or other complementary equipment, to a primary elevator. In one embodiment, a casing elevator is provided. The casing elevator includes a body, two first load-rated lift members coupled to a perimeter of the body at a first location on the body, and two second load-rated lift members coupled to the perimeter of the body at a second location on the body, the second location being different than the first location.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.