Multi-layer backup ring
US10907437B2 · kind B2 · utility
1Cited by
61References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 28, 2019 |
| Grant date | Feb 2, 2021 |
| Priority date | — |
| Expiry date | Mar 28, 2039 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/1208
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A backup including a radially inwardly disposed circumferentially continuous ring; a radially outwardly disposed circumferentially discontinuous ring, the circumferentially discontinuous ring comprising a plurality of segments arranged to overlap adjacent ones thereof about a circumference of the circumferentially discontinuous ring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.