US2545370A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and machine for making rubber coated steel belts
Assignee: Sandvik Steel Inc
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Filing: 1948-01-07
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Granted: 1951-03-13
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Expires: 1968-01-07
Abstract
No abstract record available.
Inventors
- 👤 Mittelmann Eugene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:51
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/40; B29C66/41; B29C66/45; B29C65/00; B29C65/02; B29C65/44; B29C65/46; B29C65/48; B29C65/4805; B29C65/483; B29C65/4835; B29C65/52; B29C65/522; B29C65/526; B29C66/01; B29C66/02; B29C66/022; B29C66/0224; B29C66/02245; B29C66/024; B29C66/0242; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/70; B29C66/71; B29C66/73; B29C66/739; B29C66/7394; B29C66/74; B29C66/742; B29C66/7428; B29C66/74283; B29C66/80; B29C66/81; B29C66/814; B29C66/8145; B29C66/81463; B29C66/81465; B29C66/816; B29C66/8161; B29C66/83; B29C66/834; B29C66/8341; B29C66/83411; B29C66/83413; B29C66/90; B29C66/91; B29C66/914; B29C66/9141; B29C66/91411; B29C66/91431; B29C66/9161; B29C66/91641; B29C66/91643; B29C66/91645; B29C66/92; B29C66/924; B29C66/9241; B29L; B29L2009/00; B29L2009/003; Y; Y10; Y10T; Y10T156/00; Y10T156/14; Y10T156/17; Y10T156/1702; Y10T156/1712; Y10T156/1722; Y10T156/1727; Y10T156/1732
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
A METHOD OF MAKING RUBBER COATED STEEL STRIP WHICH COMPRISES CONTINUOUSLY CONVEYING A FLEXIBLE STEEL STRIP HAVING A WIDTH CONSIDERABLY GREATER THAN ITS THICKNESS AND A RUBBER STRIP ALONG CONVERGING PATHS, PRE-HEATING THE STEEL STRIP IN ADVANCE OF THE POINT OF CONVERGENCE, APPLYING A THERMOSETTING CEMENT TO THE INNER SURFACE OF THE RUBBER STRIP IN ADVANCE OF THE POINT OF CONVERGENCE, SIMULTANEOUSLY HEATING THE RUBBER STRIP AND THE CEMENT COATING BY A HIGH FREQUENCY DIELECTRIC FIELD TO A RUBBER CURING AND CEMENT SETTING TEMPERATURE, AND THEREAFTER APPLYING COMPRESSIVE PRESSURE TO THE ENTIRE WIDTH OF THE CONVERGED STRIPS, AND CONCURRENTLY SUPPLYING SUFFICIENT HEAT TO PREVENT LOWERING OF THE TEMPERATURE OF THE RUBBER STRIP AND CEMENT COATING, FOR A PREDETERMINED LENGTH OF TIME TO CURE THE RUBBER AND SET THE CEMENT AS THE STRIPS ARE MOVING CONTINUOUSLY.
Claim 2
Dependent Claim
133 words
IN A MACHINE FOR MAKING RUBBER COATED STEEL STRIP, MEANS FOR CONTINUOUSLY CONVEYING A STEEL STRIP AND A RUBBER STRIP ALONG CONVERGING PATHS, MEANS FOR PRE-HEATING THE STEEL STRIP IN ADVANCE OF THE POINT OF CONVERGENCE, MEANS FOR APPLYING A THERMOSETTING CEMENT TO THE INNER SURFACE OF THE RUBBER STRIP IN ADVANCE OF THE POINT OF CONVERGENCE, MEANS FOR SIMULTANEOUSLY HEATING THE RUBBER STRIP AND THE CEMENT COATING BY A HIGH FREQUENCY DIELECTRIC FIELD TO A RUBBER CURING AND CEMENT SETTING TEMPERATURE, MEANS THEREAFTER APPLYING COMPRESSIVE PRESSURE TO THE ENTIRE WIDTH OF THE CONVERGED STRIPS, AND MEANS FOR SUPPLYING HEAT TO PREVENT LOWERING OF THE TEMPERATURE OF THE RUBBER STRIP AND CEMENT COATING FOR A PREDETERMINED LENGTH OF TIME TO CURE THE RUBBER AND SET THE CEMENT AS THE STRIPS ARE MOVING CONTINUOUSLY.
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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) | 1954-03-12 | 1954-09-11 | 1955-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-12 | 1958-09-11 | 1959-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-12 | 1962-09-11 | 1963-03-13 | $7700.00 | Window Closed / Lapsed |