US2707629A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for heating metal parts
Assignee: Individual
•
Filing: 1954-03-25
•
Granted: 1955-05-03
•
Expires: 1974-03-25
Abstract
No abstract record available.
Inventors
- 👤 Frank J Kennedy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:48
CPC Classifications
C; C23; C23C; C23C10/00; C23C10/28; C23C10/34; C21; C21D; C21D9/00; C21D9/0031
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
181 words
THE METHOD OF HEATING A WORK PIECE IN A FURNACE, THE WORK PIECE BEING OF DIFFERENT TRANSVERSE THICKNESS AT DIFFERENT REGIONS ALONG ITS LENGTH, WHICH METHOD COMPRISES CONTINUOUSLY HEATING LOCALIZED AREAS OF THE INSIDE FACE OF THE FURNACE AT LONGTIUDINALLY SPACED REGIONS ALONG THE LENGTH OF THE FURNACE, AND AT CIRCUMFERENTIALLY SPACED LOCCATIONS AT AT LEAST ONE OF SAID LONGITUDINALLY SPACED REGIONS TO PRODUCE HOT AREAS THAT ARE SUBSTANTIALLY HOTTER THAN THE ATMOSPHERE OF THE FURNACE AND OF SUBSTANTIALLY HIGHER TEMPERATURE THAN THE OTHER PARTS OF THE INSIDE FACE OF THE FURNACE TO PROVIDE CONCENTRATED AREAS OF HIGH HEAT RADIATION AND PROVIDING MORE OF SAID AREAS OF HIGH HEAT RADIATION AT AT LEAST ONE OF SAID LONGITUDINALLY SPACED REGIONS THAN AT OTHERS OF SAID REGIONS, LOCATING THE WORK PIECE AXIALLY IN THE FURNACE TO BRING ITS REGION OF DIFFERENT TRANSVERSE THICKNESS TO THE PART OF THE LENGTH OF THE FURNACE HAVING MORE OF SAID AREAS OF HIGH HEAT RADIATION, AND PROPORTIONING THE HEATING TO COMPENSATE THE DIFFERENCES IN THE TRANSVERSE THICKNESS OF THE WORK PIECE BY PRODUCING SUBSTANTIALLY EQUAL TEMPERATURE RISES.
Claim 2
Independent Claim
181 words
THE METHOD OF HEATING A WORK PIECE IN A FURNACE, THE WORK PIECE BEING OF DIFFERENT TRANSVERSE THICKNESS AT DIFFERENT REGIONS ALONG ITS LENGTH, WHICH METHOD COMPRISES CONTINUOUSLY HEATING LOCALIZED AREAS OF THE INSIDE FACE OF THE FURNACE AT LONGTIUDINALLY SPACED REGIONS ALONG THE LENGTH OF THE FURNACE, AND AT CIRCUMFERENTIALLY SPACED LOCCATIONS AT AT LEAST ONE OF SAID LONGITUDINALLY SPACED REGIONS TO PRODUCE HOT AREAS THAT ARE SUBSTANTIALLY HOTTER THAN THE ATMOSPHERE OF THE FURNACE AND OF SUBSTANTIALLY HIGHER TEMPERATURE THAN THE OTHER PARTS OF THE INSIDE FACE OF THE FURNACE TO PROVIDE CONCENTRATED AREAS OF HIGH HEAT RADIATION AND PROVIDING MORE OF SAID AREAS OF HIGH HEAT RADIATION AT AT LEAST ONE OF SAID LONGITUDINALLY SPACED REGIONS THAN AT OTHERS OF SAID REGIONS, LOCATING THE WORK PIECE AXIALLY IN THE FURNACE TO BRING ITS REGION OF DIFFERENT TRANSVERSE THICKNESS TO THE PART OF THE LENGTH OF THE FURNACE HAVING MORE OF SAID AREAS OF HIGH HEAT RADIATION, AND PROPORTIONING THE HEATING TO COMPENSATE THE DIFFERENCES IN THE TRANSVERSE THICKNESS OF THE WORK PIECE BY PRODUCING SUBSTANTIALLY EQUAL TEMPERATURE RISES.
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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) | 1958-05-02 | 1958-11-01 | 1959-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-02 | 1962-11-01 | 1963-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-02 | 1966-11-01 | 1967-05-03 | $7700.00 | Window Closed / Lapsed |