US3274322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of flow forming polyurethane and like material
Assignee: Chemechanical Inc
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Filing: 1964-03-09
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Granted: 1966-09-20
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Expires: 1984-03-09
Abstract
No abstract record available.
Inventors
- 👤 John A Scudder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:55
CPC Classifications
B; B05; B05D; B05D1/00; B05D1/002; B05D1/26; B05D1/40; B05D1/42; B29; B29C; B29C35/00; B29C35/18; B29C41/00; B29C41/24; B29C41/26; B29C41/28; B29C41/30; B29C43/00; B29C43/22; B29C43/224; B29C70/00; B29C70/68; B29C70/78; B29D; B29D99/00; B29D99/0032; B05D2252/00; B05D2252/02; B05D2503/00; B29C37/00; B29C2037/92; B29K; B29K2075/00; B29L; B29L2031/00; B29L2031/32; B29L2031/324; B29L2031/709; B29L2031/7094; B29L2031/7096
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
THE METHOD OF FORMING BELTS, TIRES, O-RINGS, STRIPS AND SIMILAR PRODUCTS FROM POLYURETHANE AND LIKE MATERIAL COMPRISING THE SUCCESSIVE STEPS OF: FLOWING A QUANTITY OF POLYURETHANE IN A READILY FLOWABLE STATE ON TO A SUPPORTING SURFACE MOVING AT A CONTROLLED RATE OF TRAVEL IN RELATION TO THE FLOW RATE OF THE POLYURETHANE; SUBJECTING THE SO APPLIED POLYURETHANE TO A DOCTORING ACTION THEREBY TO EFFECT A PRELIMINARY SHAPING OF SAID PRODUCT IN A STATE OF PARTIAL CURE AND HAVING AN EXPOSED SURFACE; FLOWING ON TO THE EXPOSED SURFACE OF THE MOVING, PRELIMINARILY SHAPED POLYURETHANE PRODUCT A LIQUID FORCE-TRANSMITTING MEDIUM; SUBJECTING THE PRELIMINARILY SHAPED POLYURETHANE PRODUCT TO EXTERNAL PRESSURE EXERTED ON SAID EXPOSED SURFACE IN A MANNER AS EFFECTS DYNAMIC FLOW OF THE POLYURETHANE AND FINAL SHAPING OF THE PRELIMINARILY SHAPED PRODUCT TO THAT OF THE DESIRED PRODUCT BY SHEAR ACTION DEVELOPED AND TRANSMITTED BY AND THROUGH SAID MEDIUM; AND FINALLY CURING THE FINALLY SHAPED POLYURETHANE PRODUCT TO A PHYSICALLY STABLE CONDITION.
Claim 2
Independent Claim
160 words
THE METHOD OF FORMING BELTS, TIRES, O-RINGS, STRIPS AND SIMILAR PRODUCTS FROM POLYURETHANE AND LIKE MATERIAL COMPRISING THE SUCCESSIVE STEPS OF: FLOWING A QUANTITY OF POLYURETHANE IN A READILY FLOWABLE STATE ON TO A SUPPORTING SURFACE MOVING AT A CONTROLLED RATE OF TRAVEL IN RELATION TO THE FLOW RATE OF THE POLYURETHANE; SUBJECTING THE SO APPLIED POLYURETHANE TO A DOCTORING ACTION THEREBY TO EFFECT A PRELIMINARY SHAPING OF SAID PRODUCT IN A STATE OF PARTIAL CURE AND HAVING AN EXPOSED SURFACE; FLOWING ON TO THE EXPOSED SURFACE OF THE MOVING, PRELIMINARILY SHAPED POLYURETHANE PRODUCT A LIQUID FORCE-TRANSMITTING MEDIUM; SUBJECTING THE PRELIMINARILY SHAPED POLYURETHANE PRODUCT TO EXTERNAL PRESSURE EXERTED ON SAID EXPOSED SURFACE IN A MANNER AS EFFECTS DYNAMIC FLOW OF THE POLYURETHANE AND FINAL SHAPING OF THE PRELIMINARILY SHAPED PRODUCT TO THAT OF THE DESIRED PRODUCT BY SHEAR ACTION DEVELOPED AND TRANSMITTED BY AND THROUGH SAID MEDIUM; AND FINALLY CURING THE FINALLY SHAPED POLYURETHANE PRODUCT TO A PHYSICALLY STABLE CONDITION.
References Cited (Backward Citations)
US2129607A
Cited
US3168605A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |