US2937436A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for forming glass reinforced metal tubing
Assignee: Owens Corning
•
Filing: 1956-11-19
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Granted: 1960-05-24
•
Expires: 1976-11-19
Abstract
No abstract record available.
Inventors
- 👤 Charles K Butler
- 👤 Robert M Woodward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:49
CPC Classifications
B; B65; B65H; B65H81/00; B65H81/06; B65H81/08; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49801
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A METHOD FOR FORMING FIBER REINFORCED METAL TUBING, SAID METHOD COMPRISING WRAPPING AT LEAST ONE CONTINUOUS LENGTH OF METAL-BEARING FIBROUS MATERIAL IN A HELICAL PATH WITH SUCCESSIVE TURNS LYING CLOSELY ADJACENT EACH OTHER, SOFTENING THE METAL BORNE BY SUCH MATERIAL, DENSIFYING SUBSTANTIALLY ALL OF SUCH MATERIAL WHILE THE METAL IS SOFT AND FUSING THE METAL TOGETHER BY PRESSURE AGAINST SUBSTANTIALLY ALL OF THE INTERIOR AND EXTERIOR WALLS OF THE HELICALLY WRAPPED MASS, AND COOLING THE DENSIFIED, FUSED, TUBULAR MASS.
Claim 2
Independent Claim
79 words
A METHOD FOR FORMING FIBER REINFORCED METAL TUBING, SAID METHOD COMPRISING WRAPPING AT LEAST ONE CONTINUOUS LENGTH OF METAL-BEARING FIBROUS MATERIAL IN A HELICAL PATH WITH SUCCESSIVE TURNS LYING CLOSELY ADJACENT EACH OTHER, SOFTENING THE METAL BORNE BY SUCH MATERIAL, DENSIFYING SUBSTANTIALLY ALL OF SUCH MATERIAL WHILE THE METAL IS SOFT AND FUSING THE METAL TOGETHER BY PRESSURE AGAINST SUBSTANTIALLY ALL OF THE INTERIOR AND EXTERIOR WALLS OF THE HELICALLY WRAPPED MASS, AND COOLING THE DENSIFIED, FUSED, TUBULAR MASS.
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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) | 1963-05-24 | 1963-11-23 | 1964-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-24 | 1967-11-23 | 1968-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-24 | 1971-11-23 | 1972-05-24 | $7700.00 | Window Closed / Lapsed |