Expandable coupling
US7107663B2 · kind B2 · utility
13Cited by
78References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 12, 2003 |
| Grant date | Sep 19, 2006 |
| Priority date | — |
| Expiry date | Oct 16, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/4994
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An expandable tubular coupling (10) includes first and second thread portions (12,14) each comprising a plurality of inter-engaging teeth (20,22), wherein at least one tooth on the first thread portion (12) engages a corresponding tooth on the second thread portion (14) and the remainder of said inter-engaging teeth (20,22) define respective gaps (32) therebetween.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.