Method of forming large diameter thermoplastic seal
US8721823B2 · kind B2 · utility
23Cited by
78References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 6, 2009 |
| Grant date | May 13, 2014 |
| Priority date | — |
| Expiry date | Aug 24, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1036
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of forming a seal ring includes heating an extruded rod to a temperature above a glass transition temperature. The extruded rod has first and second ends. The method further includes bending the extruded rod into a circular structure while the temperature is above the glass transition temperature, joining the first and second ends of the extruded rod to form a semi-finished ring, and annealing the semi-finished ring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.