US2757709A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conveyor belting and method of making same
Assignee: Dunlop Rubber Co Ltd
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Filing: 1954-01-13
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Granted: 1956-08-07
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Expires: 1974-01-13
Abstract
No abstract record available.
Inventors
- 👤 Crabbe John Douglas
- 👤 Warren Fredrick William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:52
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/02; B29C65/04; B29C63/00; B29C63/0026; B29C63/0034; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/12; B29C66/124; B29C66/1244; B29C66/12441; B29C66/20; B29C66/21; B29C66/40; B29C66/47; B29C66/472; B29C66/474; B29C66/70; B29C66/71; B29C66/80; B29C66/84; B29C66/861; D; D01; D01H; D01H5/00; D01H5/18; D01H5/70; D01H5/86; B29C65/18; B29C66/83; B29C66/832; B29C66/8322; B29K; B29K2027/00; B29K2027/06; B29K2995/00; B29K2995/0012; B29K2995/0016; B29L; B29L2029/00; B29L2031/00; B29L2031/709; B29L2031/7092; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1007; Y10T156/1008; Y10T156/1011; Y10T428/00; Y10T428/24; Y10T428/2419; Y10T428/24198; Y10T428/24752
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
81 words
A METHOD OF MAKING BELTING COMPRISING APPLYING U-SHAPED STRIPS OF A POLYVINYL CHLORIDE COMPOSITION TO THE EDGES OF A BELTING ASSEMBLY COMPRISING AT LEAST ONE PLY OF TEXTILE FABRIC COATED WITH A POLYVINYL CHLORIDE COMPOSITION SO THAT ARMS OF THE U-SHAPED STRIPS EMBRACE THE OUTER SURFACES OF THE ASSEMBLY, FUSING THE STRIPS TO THE ADJACENT PORTIONS OF THE BELTING SURFACES AT INTERVALS ALONG THE BELTING ASSEMBLY EDGES BY RADIO-FREQUENCY HEATING, AND THEN FUSING AND SETTING THE ASSEMBLY AND STRIPS UNDER PRESSURE.
Claim 2
Independent Claim
81 words
A METHOD OF MAKING BELTING COMPRISING APPLYING U-SHAPED STRIPS OF A POLYVINYL CHLORIDE COMPOSITION TO THE EDGES OF A BELTING ASSEMBLY COMPRISING AT LEAST ONE PLY OF TEXTILE FABRIC COATED WITH A POLYVINYL CHLORIDE COMPOSITION SO THAT ARMS OF THE U-SHAPED STRIPS EMBRACE THE OUTER SURFACES OF THE ASSEMBLY, FUSING THE STRIPS TO THE ADJACENT PORTIONS OF THE BELTING SURFACES AT INTERVALS ALONG THE BELTING ASSEMBLY EDGES BY RADIO-FREQUENCY HEATING, AND THEN FUSING AND SETTING THE ASSEMBLY AND STRIPS UNDER PRESSURE.
Claim 3
Dependent Claim
44 words
BELTING COMPRISING AN ASSEMBLY OF AT LEAST ONE PLY OF TEXTILE FABRIC IMPREGNATED WITH A POLYVINYL CHLORIDE COMPOSITION AND HAVING U-SHAPED EDGE STRIPS OF A POLYVINYL CHLORIDE COMPOSITION FUSED THERETO SO THAT THE ARMS OF THE STRIPS EMBRACE THE OUTER SURFACES OF THE ASSEMBLY.
Claim 4
Dependent Claim
44 words
BELTING COMPRISING AN ASSEMBLY OF AT LEAST ONE PLY OF TEXTILE FABRIC IMPREGNATED WITH A POLYVINYL CHLORIDE COMPOSITION AND HAVING U-SHAPED EDGE STRIPS OF A POLYVINYL CHLORIDE COMPOSITION FUSED THERETO SO THAT THE ARMS OF THE STRIPS EMBRACE THE OUTER SURFACES OF THE ASSEMBLY.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
US2639852A
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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) | 1959-08-07 | 1960-02-06 | 1960-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-07 | 1964-02-06 | 1964-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-07 | 1968-02-06 | 1968-08-07 | $7700.00 | Window Closed / Lapsed |