US3273101A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating apparatus for use in electrically heated rolls
Assignee: Monsanto Co
•
Filing: 1963-12-18
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Granted: 1966-09-13
•
Expires: 1983-12-18
Abstract
No abstract record available.
Inventors
- 👤 Sam W Burdge
- 👤 Rollins S Carter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:23
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/10; H05B3/16; H05B3/0095
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
95 words
A HEATING APPARATUS FOR USE IN ELECTRICALLY HEATED ROLLS COMPRISING A SPOOL-SHAPED CORE ASSEMBLY, ELECTRICAL RESISTANCE HEATER MEANS WOUND IN A SUBSTANTIALLY HELICAL FASHION ABOUT SAID CORE ASSEMBLY, FASTENING MEANS OPERATIVE TO MAINTAIN SUBSTANTIALLY EQUI-SPACED POINTS ALONG SAID HEATER MEANS FIXED RELATIVE TO SAID CORE ASSEMBLY, SAID FASTENING MEANS COMPRISING PAIRS OF SUPERPOSED ELECTRICAL INSULATING STRIPS SPACED CIRCUMFERENTIALLY ABOUT SAID CORE ASSEMBLY AND EXTENDING AXIALLY THEREOF, SAID HEATER MEANS EXTENDING BETWEEN THE MEMBER STRIPS OF EACH OF SAID PAIRS, MEANS TO CLAMP SAID STRIPS TO SAID CORE ASSEMBLY, WHEREBY THERMAL EXPANSION OF SAID HEATER ELE-
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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) | 1969-09-12 | 1970-03-14 | 1970-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-12 | 1974-03-14 | 1974-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-12 | 1978-03-14 | 1978-09-13 | $7700.00 | Window Closed / Lapsed |