US2990309A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making an elongated flanged slit tubular article
Assignee: Parsons Corp
•
Filing: 1956-12-10
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Granted: 1961-06-27
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Expires: 1976-12-10
Abstract
No abstract record available.
Inventors
- 👤 Wahl Junior William
- 👤 Toegel Adolph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:13
CPC Classifications
B; B64; B64C; B64C27/00; B64C27/32; B64C27/46; B64C27/473; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1036; Y10T156/1038; Y10T156/1052; Y10T156/108
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
THE PROCESS OF MOLDING AN ELONGATED FLANGED SLIT TUBULAR ARTICLE, COMPRISING THE STEPS OF FOLDING BACK OVER AN ELONGATED MANDREL, AN ELONGATED PARTING SHEET AND AN ELONGATED PLASTIC-WETTED LAMINA STRIP OUTWARDLY THEREADJACENT, PLACING THE MARGINAL PORTIONS OF THE PARTING SHEET MARGINS ADJACENT TO EACH OTHER TO EXTEND OUTWARD FROM THE MANDREL TO THE OUTER EDGE OF THE ARTICLE TO BE MOLDED BETWEEN THE MARGINAL PORTIONS OF THE PLASTICWETTED LAMINA STRIP AND THUS FORM A PLASTIC-FREE PARTING LINE, MOLDING AND CURING THE LAMINA STRIP, PRYING ITS MARGINAL PORTIONS APART ELASTICALLY ALONG THE PARTING LINE AND REMOVING THE MANDREL.
Claim 2
Dependent Claim
97 words
THE PROCESS OF MOLDING AN ELONGATED FLANGED SLIT TUBULAR ARTICLE, COMPRISING THE STEPS OF FOLDING BACK OVER AN ELONGATED MANDREL, AN ELONGATED PARTING SHEET AND AN ELONGATED PLASTIC-WETTED LAMINA STRIP OUTWARDLY THEREADJACENT, PLACING THE MARGINAL PORTIONS OF THE PARTING SHEET MARGINS ADJACENT TO EACH OTHER TO EXTEND OUTWARD FROM THE MANDREL TO THE OUTER EDGE OF THE ARTICLE TO BE MOLDED BETWEEN THE MARGINAL PORTIONS OF THE PLASTICWETTED LAMINA STRIP AND THUS FORM A PLASTIC-FREE PARTING LINE, MOLDING AND CURING THE LAMINA STRIP, PRYING ITS MARGINAL PORTIONS APART ELASTICALLY ALONG THE PARTING LINE AND REMOVING THE MANDREL.
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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) | 1964-06-26 | 1964-12-26 | 1965-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-26 | 1968-12-26 | 1969-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-26 | 1972-12-26 | 1973-06-27 | $7700.00 | Window Closed / Lapsed |