US3068134A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making composite plastic pipe of reinforcing glass fibers
Assignee: FMC Corp
•
Filing: 1954-04-26
•
Granted: 1962-12-11
•
Expires: 1974-04-26
Abstract
No abstract record available.
Inventors
- 👤 William H Cilker
- 👤 Jr George A Reynolds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:18
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/04; B29C70/06; B29C70/08; B29C70/083; B29C70/28; B29C70/40; B29C70/50; B29C70/52; B29C70/521; B29C70/522
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A METHOD OF FORMING A CYLINDRICAL PLASTIC MEMBER COMPRISING THE STEPS OF CONTINUOUSLY FOLDING A RIBBON OF RESIN-IMPREGNATED FIBER MATTING IN A TRANSVERSE DIRECTION AND CONTINUOUSLY FEEDING SAID FOLDED RIBBON IN A LENGTHWISE DIRECTION INTO POSITION AROUND AN UPPER PORTION OF A VERTICAL CYLINDRICAL MANDREL TO FORM A CYLINDRICAL BASE LAYER THEREON, PROGRESSIVELY SLIDING SAID BASE LAYER DOWNWARDLY ALONG SAID MANDREL, POSITIONING LAYERS OF HELICALLY WOUND RESIN-IMPREGNATED FIBER STRANDS AND LAYERS OF AXIALLY ORIENTED RESIN-IMPREGNATED FIBER STRANDS SUCCESSIVELY OVER SAID BASE LAYER TO FORM AN UNCURED CYLINDRICAL PLASTIC MEMBER AS SAID BASE LAYER IS DRAWN DOWNWARDLY, DIRECTING
Claim 2
Independent Claim
97 words
A METHOD OF FORMING A CYLINDRICAL PLASTIC MEMBER COMPRISING THE STEPS OF CONTINUOUSLY FOLDING A RIBBON OF RESIN-IMPREGNATED FIBER MATTING IN A TRANSVERSE DIRECTION AND CONTINUOUSLY FEEDING SAID FOLDED RIBBON IN A LENGTHWISE DIRECTION INTO POSITION AROUND AN UPPER PORTION OF A VERTICAL CYLINDRICAL MANDREL TO FORM A CYLINDRICAL BASE LAYER THEREON, PROGRESSIVELY SLIDING SAID BASE LAYER DOWNWARDLY ALONG SAID MANDREL, POSITIONING LAYERS OF HELICALLY WOUND RESIN-IMPREGNATED FIBER STRANDS AND LAYERS OF AXIALLY ORIENTED RESIN-IMPREGNATED FIBER STRANDS SUCCESSIVELY OVER SAID BASE LAYER TO FORM AN UNCURED CYLINDRICAL PLASTIC MEMBER AS SAID BASE LAYER IS DRAWN DOWNWARDLY, DIRECTING
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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) | 1965-12-10 | 1966-06-11 | 1966-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-10 | 1970-06-11 | 1970-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-10 | 1974-06-11 | 1974-12-11 | $7700.00 | Window Closed / Lapsed |