US3207827A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making helical article
Assignee: Northrop Grumman Guidance and Electronics Co Inc
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Filing: 1961-01-09
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Granted: 1965-09-21
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Expires: 1981-01-09
Abstract
No abstract record available.
Inventors
- 👤 Manfred R Kuehnle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:48
CPC Classifications
H; H01; H01B; H01B13/00; H01B13/008; B; B29; B29C; B29C48/00; B29C48/03; B29C48/131; B29C48/15; B29C53/00; B29C53/02; B29C53/12; B29C48/07; B29C48/08; B29L; B29L2007/00; B29L2007/007; B29L2017/00; B29L2017/008; B29L2031/00; B29L2031/34; B29L2031/3431; B29L2031/3462; B29L2031/764; B29L2031/7644
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A METHOD OF EXTRUDING ELONGATED ARCUATE ARTICLES HAVING PRESELECTED CROSS-SECTIONAL CONFIGURATION, COMPRISING: HEATING AN EXTRUDABLE MATERIAL TO A VISCOUS STATE; CONTACTING A PORTION OF SAID HEATED MATERIAL WITH AN EXTRUSION DIE HAVING AN ORIFICE THEREIN CORRESPONDING TO SAID PRESELECTED CROSS-SECTIONAL CONFIGURATION; EXTRUDING A PORTION OF SAID MATERIAL THROUGH SAID DIE ORIFICE BY APPLYING A PRESELECTED PRESSURE GRADIENT TO SAID MATERIAL, SO CHOSEN AS TO CAUSE MATERIAL TO FLOW THROUGH SAID ORIFICE ALONG AN AXIS AND EMERGE THEREFROM TANGENTIAL TO SAID AXIS; AND WINDING SAID EXTRUDED MATERIAL ON A ROTATING ELEMENT TO FORM SAID ARTICLE.
Claim 2
Independent Claim
94 words
A METHOD OF EXTRUDING ELONGATED ARCUATE ARTICLES HAVING PRESELECTED CROSS-SECTIONAL CONFIGURATION, COMPRISING: HEATING AN EXTRUDABLE MATERIAL TO A VISCOUS STATE; CONTACTING A PORTION OF SAID HEATED MATERIAL WITH AN EXTRUSION DIE HAVING AN ORIFICE THEREIN CORRESPONDING TO SAID PRESELECTED CROSS-SECTIONAL CONFIGURATION; EXTRUDING A PORTION OF SAID MATERIAL THROUGH SAID DIE ORIFICE BY APPLYING A PRESELECTED PRESSURE GRADIENT TO SAID MATERIAL, SO CHOSEN AS TO CAUSE MATERIAL TO FLOW THROUGH SAID ORIFICE ALONG AN AXIS AND EMERGE THEREFROM TANGENTIAL TO SAID AXIS; AND WINDING SAID EXTRUDED MATERIAL ON A ROTATING ELEMENT TO FORM SAID ARTICLE.
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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) | 1968-09-20 | 1969-03-22 | 1969-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-20 | 1973-03-22 | 1973-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-20 | 1977-03-22 | 1977-09-21 | $7700.00 | Window Closed / Lapsed |