Patent US3288452A successfully refreshed from Google Patents.
US3288452A
Expired / Lapsed
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Heat treating apparatus
Assignee: Textron Inc
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Filing: 1964-07-20
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Granted: 1966-11-29
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Expires: 1984-07-20
Abstract
No abstract record available.
Inventors
- 👤 Orald L Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:13
CPC Classifications
C; C21; C21D; C21D9/00; C21D9/0031
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
A HEAT TREATING FURNACE FOR METAL PARTICLES COMPRISING HOUSING MEANS, HEATING MEANS MOUNTED ON SAID HOUSING MEANS INCLUDING SEPARATE CONTROL MEANS FOR A PREHEATING ZONE AND A HIGH TEMPERATURE HEAT-TREATMENT ZONE, RETORT MEANS EXTENDING THROUGH SAID HOUSING MEANS AND HAVING A SMOOTH CYLINDRICAL BORE, CAP MEANS AT EITHER END OF SAID BORE SUBSTANTIALLY CLOSING SAID RETORT MEANS, FRICTION DRIVE MEANS IMPARTING ROTATIONAL MOVEMENT TO SAID RETORT MEANS, AUTOMATIC FEED MEANS ELECTRICALLY INTERCONNECTED WITH SAID CONTROL MEANS FOR SUPPLYING SAID RETORT MEANS WITH METAL PARTICLES ADJACENT ONE END OF THE CYLINDRICAL BORE WHEN SAID HEATING MEANS AND DRIVE MEANS ARE IN OPERATION, AUTOMATIC DISCHARGE MEANS DISPENSING SAID METAL PARTICLES FROM SAID RETORT ADJACENT THE OTHER END OF SAID CYLINDRICAL BORE ON A SUBSTANTIALLY FIRST-IN, FIRST-OUT BASIS INTO A QUENCHING MEDIUM.
Claim 2
Dependent Claim
129 words
A HEAT TREATING FURNACE FOR METAL PARTICLES COMPRISING HOUSING MEANS, HEATING MEANS MOUNTED ON SAID HOUSING MEANS INCLUDING SEPARATE CONTROL MEANS FOR A PREHEATING ZONE AND A HIGH TEMPERATURE HEAT-TREATMENT ZONE, RETORT MEANS EXTENDING THROUGH SAID HOUSING MEANS AND HAVING A SMOOTH CYLINDRICAL BORE, CAP MEANS AT EITHER END OF SAID BORE SUBSTANTIALLY CLOSING SAID RETORT MEANS, FRICTION DRIVE MEANS IMPARTING ROTATIONAL MOVEMENT TO SAID RETORT MEANS, AUTOMATIC FEED MEANS ELECTRICALLY INTERCONNECTED WITH SAID CONTROL MEANS FOR SUPPLYING SAID RETORT MEANS WITH METAL PARTICLES ADJACENT ONE END OF THE CYLINDRICAL BORE WHEN SAID HEATING MEANS AND DRIVE MEANS ARE IN OPERATION, AUTOMATIC DISCHARGE MEANS DISPENSING SAID METAL PARTICLES FROM SAID RETORT ADJACENT THE OTHER END OF SAID CYLINDRICAL BORE ON A SUBSTANTIALLY FIRST-IN, FIRST-OUT BASIS INTO A QUENCHING MEDIUM.
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) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |