Self-aligning pipe gripping assembly and method of making and using the same
US10081110B2 · kind B2 · utility
0Cited by
12References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 22, 2016 |
| Grant date | Sep 25, 2018 |
| Priority date | — |
| Expiry date | May 19, 2037 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B19/16
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A pipe gripping assembly to selectively engage and disengage a pipe segment includes first and second jaws configured to clamp together around the pipe segment, at least one splined shaft fixedly housed in each of the first and second jaws; and at least one self-aligning piston housed in each of the first and second jaws and configured to slide and to rotate along the splined shaft. The self-aligning pistons each include a piston body, a cam, and a roller assembly coupled to the piston body and to the splined shaft. Each one of the roller assembly is configured to rotate relative to one of the cams.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.