Roller standoff assemblies
US8733455B2 · kind B2 · utility
15Cited by
27References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 1, 2012 |
| Grant date | May 27, 2014 |
| Priority date | — |
| Expiry date | Oct 27, 2032 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B17/1057
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Roller standoff assemblies and devices facilitate disposal of an interior tubular member within an exterior tubular member. Roller standoff devices include a roller cage and at least one roller supported by the roller cage to contact and roll upon the exterior tubular member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.