Patent US3555140A successfully refreshed from Google Patents.
US3555140A
Expired / Lapsed
US
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Method of making contact rolls
Assignee: Individual
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Filing: 1968-03-26
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Granted: 1971-01-12
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Expires: 1988-03-26
Abstract
Abstract A METHOD OF MAKING A CONTACT ROLL WHICH WILL BE CORD REINFORCED CONSISTING OF THREADING AN ARBOR AND CUTTING GROOVES AXIALLY OF THE ARBOR THROUGH THE THREADED PORTION THEREOF. A REINFORCING CORD IS HELICALLY WOUND IN THE THREADED GROOVES IN A FASHION WHEREBY THE CORD WILL PASS OVER THE GROOVES IN A MESH TYPE RELATIONSHIP AND THEN COVERING THE ARBOR SO FORMED WITH A RESILIENT MATERIAL WHICH MAY BE EITHER A PLASTIC MATERIAL CAST ABOUT THE ARBOR OR MAY BE UNCURED RUBBER THAT IS INSERTED INTO THE GROOVES AND THEN LAYERS OF RUBBER ARE BUILT UP ON THE ROLLS IN THE USUAL FASHION TO THE REQUIRED DIAMETER WHEREBY THE ENTIRE ROLL MAY BE VULCANIZED TO FORM AN INTEGRAL STRUCTURE.
Inventors
- 👤 William Argereu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:06
CPC Classifications
B; B29; B29D; B29D99/00; B29D99/0032; B29D99/0035; B29C; B29C63/00; B29C63/02; B29C63/04; B29C63/06; B29K; B29K2021/00; B29L; B29L2031/00; B29L2031/32; B29L2031/324
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |