US3112918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary hearth furnace control
Assignee: Salem Brosius Inc
•
Filing: 1961-03-28
•
Granted: 1963-12-03
•
Expires: 1981-03-28
Abstract
No abstract record available.
Inventors
- 👤 William F Stevens
- 👤 George R Bauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:24
CPC Classifications
F; F27; F27B; F27B9/00; F27B9/14; F27B9/16; C; C21; C21D; C21D9/00; C21D9/0037; F27B9/30; F27B9/40; F27D; F27D19/00; F27D2019/0028; F27D2019/0059
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
A ROTARY HEARTH FURNACE CONTROL COMPRISING, IN COMBINATION, A ROTARY HEARTH FURNACE HAVING A ROTATABLE HEARTH, CHARGING MEANS DELIVERING ARTICLES TO BE HEATED ONTO SAID HEARTH, DISCHARGING MEANS REMOVING HEATED ARTICLES FROM SAID HEARTH, HEARTH TRAVEL MEASURING MEANS HAVING ELECTRIC PULSE GENERATING AND PULSE COUNTING
Claim 2
Dependent Claim
45 words
A ROTARY HEARTH FURNACE CONTROL COMPRISING, IN COMBINATION, A ROTARY HEARTH FURNACE HAVING A ROTATABLE HEARTH, CHARGING MEANS DELIVERING ARTICLES TO BE HEATED ONTO SAID HEARTH, DISCHARGING MEANS REMOVING HEATED ARTICLES FROM SAID HEARTH, HEARTH TRAVEL MEASURING MEANS HAVING ELECTRIC PULSE GENERATING AND PULSE COUNTING
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-02 | 1967-06-03 | 1967-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-02 | 1971-06-03 | 1971-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-02 | 1975-06-03 | 1975-12-03 | $7700.00 | Window Closed / Lapsed |