US3002534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced thermoplastics
Assignee: Reinhold Engineering and Plastics Co Inc
•
Filing: 1956-10-29
•
Granted: 1961-10-03
•
Expires: 1976-10-29
Abstract
No abstract record available.
Inventors
- 👤 Robert L Noland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:05
CPC Classifications
F; F16; F16L; F16L9/00; F16L9/12; B; B04; B04B; B04B5/00; B04B5/08; B04B7/00; B04B7/08; B04B7/12; C; C08; C08K; C08K7/00; C08K7/02; C08K7/04; C08K7/14; E; E21; E21B; E21B17/00; F16C; F16C1/00; F16C1/26; F16L11/00; F16L11/04; F16L11/08; Y; Y10; Y10S; Y10S138/00; Y10S138/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A GLASS REINFORCED THERMOPLASTIC PIPE WHICH COMPRISES: AN INNER CYLINDER OF A THERMOPLASTIC MATERIAL, A PLURALITY OF SUBSTANTIALLY PARALLEL AND AXIALLY DISPOSED RESIN-IMPREGNATED GLASS FILAMENTS AFFIXED DIRECTLY TO THE OUTER WALL OF SAID THERMOPLASTIC CYLINDER BY A CURED BONDING MATERIAL FORMING AN INTERFACE THEREWITH, SAID BONDING MATERIAL COMPRISING SAID THERMOPLASTIC MATERIAL AND SAID RESIN OF SAID RESIN-IMPREGNATED GLASS FILAMENTS SAID THERMOPLASTIC MATERIAL AND SAID RESIN BEING UNIFORMLY ADMIXED IN SAID BONDING MATERIAL, SAID AXIALLY DISPOSED GLASS FILAMENTS AND SAID OUTER WALL BEING JUXTAPOSED, SAID GLASS FILAMENTS HAVING A SUBSTANTIALLY LOWER COEFFICIENT OF EXPANSION THAN SAID THERMOPLASTIC MATERIAL AND BEING SO BONDED TO THE INNER CYLINDER AS TO EXERT A COMPRESSIVE FORCE ON THE THERMOPLASTIC MATERIAL AS A THERMAL RISE OCCURS TO THEREBY PLACE THE INNER CYLINDER IN COMPRES-
Claim 2
Dependent Claim
128 words
A GLASS REINFORCED THERMOPLASTIC PIPE WHICH COMPRISES: AN INNER CYLINDER OF A THERMOPLASTIC MATERIAL, A PLURALITY OF SUBSTANTIALLY PARALLEL AND AXIALLY DISPOSED RESIN-IMPREGNATED GLASS FILAMENTS AFFIXED DIRECTLY TO THE OUTER WALL OF SAID THERMOPLASTIC CYLINDER BY A CURED BONDING MATERIAL FORMING AN INTERFACE THEREWITH, SAID BONDING MATERIAL COMPRISING SAID THERMOPLASTIC MATERIAL AND SAID RESIN OF SAID RESIN-IMPREGNATED GLASS FILAMENTS SAID THERMOPLASTIC MATERIAL AND SAID RESIN BEING UNIFORMLY ADMIXED IN SAID BONDING MATERIAL, SAID AXIALLY DISPOSED GLASS FILAMENTS AND SAID OUTER WALL BEING JUXTAPOSED, SAID GLASS FILAMENTS HAVING A SUBSTANTIALLY LOWER COEFFICIENT OF EXPANSION THAN SAID THERMOPLASTIC MATERIAL AND BEING SO BONDED TO THE INNER CYLINDER AS TO EXERT A COMPRESSIVE FORCE ON THE THERMOPLASTIC MATERIAL AS A THERMAL RISE OCCURS TO THEREBY PLACE THE INNER CYLINDER IN COMPRES-
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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) | 1964-10-02 | 1965-04-03 | 1965-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-02 | 1969-04-03 | 1969-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-02 | 1973-04-03 | 1973-10-03 | $7700.00 | Window Closed / Lapsed |