Patent US2667684A successfully refreshed from Google Patents.
US2667684A
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High-temperature packing
Assignee: EIDP Inc
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Filing: 1951-08-29
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Granted: 1954-02-02
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Expires: 1971-08-29
Abstract
No abstract record available.
Inventors
- 👤 John R Boyer
- 👤 Richard M Luckring
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:16
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/18; F16J15/20; F16J15/22; Y; Y10; Y10S; Y10S277/00; Y10S277/935; Y10S277/936
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
THE METHOD OF MANUFACTURING A TEMPERATURE-RESISTANT FIBROUS JOINT PACKING FORMED INTO STRANDS FROM A NUMBER OF SUBSTANTIALLY PURE SILICA FIBERS, COMPRISING COATING A PLURALITY OF THE STRANDS WITH A LUBRICATING MATERIAL AND A PARTICULATE TEMPERATURE-RESISTANT SEALING MEDIUM, PLAITING SAID STRANDS INTO A SUCCESSION OF SUPERIMPOSED LAYERS DISPOSED ONE OVER ANOTHER TO FORM A COMPOSITE BRAID, PRESHRINKING THE RESULTING COMPOSITE BRAID BY EXPOSURE TO TEMPERATURES OF 800* TO 1000* C. IN AN ATMOSPHERE OF AN INERT GAS, AND COOLING THE BRAID TO ROOM TEMPERATURE.
Claim 2
Independent Claim
83 words
THE METHOD OF MANUFACTURING A TEMPERATURE-RESISTANT FIBROUS JOINT PACKING FORMED INTO STRANDS FROM A NUMBER OF SUBSTANTIALLY PURE SILICA FIBERS, COMPRISING COATING A PLURALITY OF THE STRANDS WITH A LUBRICATING MATERIAL AND A PARTICULATE TEMPERATURE-RESISTANT SEALING MEDIUM, PLAITING SAID STRANDS INTO A SUCCESSION OF SUPERIMPOSED LAYERS DISPOSED ONE OVER ANOTHER TO FORM A COMPOSITE BRAID, PRESHRINKING THE RESULTING COMPOSITE BRAID BY EXPOSURE TO TEMPERATURES OF 800* TO 1000* C. IN AN ATMOSPHERE OF AN INERT GAS, AND COOLING THE BRAID TO ROOM TEMPERATURE.
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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) | 1957-02-01 | 1957-08-03 | 1958-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-01 | 1961-08-03 | 1962-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-01 | 1965-08-03 | 1966-02-02 | $7700.00 | Window Closed / Lapsed |