US2815043A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic pipe and method of making same
Assignee: DE GANAHL
•
Filing: 1955-03-29
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Granted: 1957-12-03
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Expires: 1975-03-29
Abstract
No abstract record available.
Inventors
- 👤 Walter B Kleiner
- 👤 George N Carmichael
- 👤 Ganahl Carl De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:02
CPC Classifications
F; F16; F16L; F16L11/00; F16L11/04; F16L11/08; B; B29; B29C; B29C53/00; B29C53/56; B29C70/00; B29C70/04; B29C70/06; B29C70/10; B29C70/16; B29C70/28; B29C70/30; B29C70/32; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/20; F16L59/00; F16L59/02; F16L9/00; F16L9/12; Y; Y10; Y10S; Y10S138/00; Y10S138/07; Y10S273/00; Y10S273/07
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
132 words
THE METHOD OF MAKING PLASTIC PIPE WHICH COMPRISES APPLYING A LAYER OF PLASTIC TAPE ABOUT A PIPE-FORMING MANDREL, SAID PLASTIC TAPE COMPRISING AN INTIMATE BLEND OF FROM ABOUT 45% TO 75% BY WEIGHT OF AT LEAST ONE POLYMER SELECTED FROM THE GROUP CONSISTING OF POLYMERS OF VINYL CHLORIDE, VINYL ACETATE, VINYLIDENE CHLORIDE AND VINYL BUTYRAL AND FROM ABOUT 10% TO 50% BY WEIGHT OF POLYMERIZABLE THERMOSETTING MATERIALS COMPATIBLE WITH SAID VINYL POLYMERS, APPLYING ABOUT THE LAYER OF PLASTIC TAPE A LAYER OF CONTINUOUS STRANDS OF FIBER COATED AND IMPREGNATED WITH AN UNCURED LIQUID RESIN COMPOSITION, SAID UNCURED RESIN COMPOSITION BEING REACTIVE WITH THE THERMOSETTING MATERIALS OF SAID PLASTIC TAPE TO FROM COPOLYMERS THEREWITH WHEN SAID RESIN IS CURED, AND HEATING THE MATERIALS ON THE MANDREL TO CURE THE RESIN COMPOSITION. FIG -01
Claim 2
Independent Claim
132 words
THE METHOD OF MAKING PLASTIC PIPE WHICH COMPRISES APPLYING A LAYER OF PLASTIC TAPE ABOUT A PIPE-FORMING MANDREL, SAID PLASTIC TAPE COMPRISING AN INTIMATE BLEND OF FROM ABOUT 45% TO 75% BY WEIGHT OF AT LEAST ONE POLYMER SELECTED FROM THE GROUP CONSISTING OF POLYMERS OF VINYL CHLORIDE, VINYL ACETATE, VINYLIDENE CHLORIDE AND VINYL BUTYRAL AND FROM ABOUT 10% TO 50% BY WEIGHT OF POLYMERIZABLE THERMOSETTING MATERIALS COMPATIBLE WITH SAID VINYL POLYMERS, APPLYING ABOUT THE LAYER OF PLASTIC TAPE A LAYER OF CONTINUOUS STRANDS OF FIBER COATED AND IMPREGNATED WITH AN UNCURED LIQUID RESIN COMPOSITION, SAID UNCURED RESIN COMPOSITION BEING REACTIVE WITH THE THERMOSETTING MATERIALS OF SAID PLASTIC TAPE TO FROM COPOLYMERS THEREWITH WHEN SAID RESIN IS CURED, AND HEATING THE MATERIALS ON THE MANDREL TO CURE THE RESIN COMPOSITION. FIG -01
Claim 3
Dependent Claim
95 words
AN INTEGRALLY FORMED PLASTIC PIPE COMPRISING AN IMPERVIOUS PLASTIC INNER LINING CHEMICALLY BONDED TO A FIBER REINFORCED PLASTIC PIPE BODY, SAID INNER LINING COMPRISING FROM ABOUT 45% TO 75% BY WEIGHT OF AT LEAST ONE VINYL POLYMER SELECTED FROM THE GROUP CONSISTING OF VINYL CHLORIDE, VINYL ACETATE, VINYLIDENE CHLORIDE AND VINYL BUTYRAL AND FROM ABOUT 10% TO 50% BY WEIGHT OF A THERMOSETTING RESINOUS MATERIAL, SAID FIBER REINFORCED PLASTIC PIPE BODY COMPRISING CONTINUOUS STRANDS OF FIBER REINFORCING MATERIAL EXTENDING THROUGH A COHERENT BODY OF CURED THERMOSETTING RESIN COPOLYMERIZED WITH THE THERMOSETTING MATERIAL OF SAID LINING.
Claim 4
Dependent Claim
95 words
AN INTEGRALLY FORMED PLASTIC PIPE COMPRISING AN IMPERVIOUS PLASTIC INNER LINING CHEMICALLY BONDED TO A FIBER REINFORCED PLASTIC PIPE BODY, SAID INNER LINING COMPRISING FROM ABOUT 45% TO 75% BY WEIGHT OF AT LEAST ONE VINYL POLYMER SELECTED FROM THE GROUP CONSISTING OF VINYL CHLORIDE, VINYL ACETATE, VINYLIDENE CHLORIDE AND VINYL BUTYRAL AND FROM ABOUT 10% TO 50% BY WEIGHT OF A THERMOSETTING RESINOUS MATERIAL, SAID FIBER REINFORCED PLASTIC PIPE BODY COMPRISING CONTINUOUS STRANDS OF FIBER REINFORCING MATERIAL EXTENDING THROUGH A COHERENT BODY OF CURED THERMOSETTING RESIN COPOLYMERIZED WITH THE THERMOSETTING MATERIAL OF SAID LINING.
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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) | 1960-12-02 | 1961-06-03 | 1961-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-02 | 1965-06-03 | 1965-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-02 | 1969-06-03 | 1969-12-03 | $7700.00 | Window Closed / Lapsed |