Patent US3219503A successfully refreshed from Google Patents.
US3219503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced ring of resinous material
Assignee: JOHN CRANE HOUDAILLE Inc A CORP OF
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Filing: 1962-03-19
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Granted: 1965-11-23
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Expires: 1982-03-19
Abstract
No abstract record available.
Inventors
- 👤 Blair Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:24
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/18; F16J15/20; B; B29; B29C; B29C70/00; B29C70/04; B29C70/28; Y; Y10; Y10S; Y10S277/00; Y10S277/924; Y10S277/935; Y10S277/936; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
THE METHOD OF FORMING A RING OF THERMOSETTING MATERIAL REINFORCED WITH STRANDS OF FIBROUS MATERIAL WHICH COMPRISES BRAIDING A TUBE FROM FIBROUS UNTWISTED THREADS OF YARN, FILLING THE TUBE WITH POWDERED SUBSTANTIALLY UNCURED THERMOSETTING RESIN, COLLAPSING THE TUBE TO FORM A TWO-PLY RIBBON, WINDING A PREDETERMINED LENGTH OF THE RIBBON INTO A HELIX WITH THE JPLANE OF THE RIBBON EXTENDING RADIALLY OF THE AXIS OF THE HELIX, AND MOLDING THE HELICALLY WOUND RIBBON UNMDER HEAT AND PRESSURE TO FORM A COHERENT ENDLESS RING OF THE DESIRED SHAPE AND DIMENSIONS.
Claim 2
Independent Claim
89 words
THE METHOD OF FORMING A RING OF THERMOSETTING MATERIAL REINFORCED WITH STRANDS OF FIBROUS MATERIAL WHICH COMPRISES BRAIDING A TUBE FROM FIBROUS UNTWISTED THREADS OF YARN, FILLING THE TUBE WITH POWDERED SUBSTANTIALLY UNCURED THERMOSETTING RESIN, COLLAPSING THE TUBE TO FORM A TWO-PLY RIBBON, WINDING A PREDETERMINED LENGTH OF THE RIBBON INTO A HELIX WITH THE JPLANE OF THE RIBBON EXTENDING RADIALLY OF THE AXIS OF THE HELIX, AND MOLDING THE HELICALLY WOUND RIBBON UNMDER HEAT AND PRESSURE TO FORM A COHERENT ENDLESS RING OF THE DESIRED SHAPE AND DIMENSIONS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |