US3124634A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Furnace construction
Assignee: —
•
Filing: —
•
Granted: 1964-03-10
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Expires: 1981-03-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:18
CPC Classifications
C; C21; C21D; C21D1/00; C21D1/74; C21D1/773
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
160 words
IN A FURNACE CONSTRUCTION FOR USE IN THE HEAT TREATMENT OF A WORK PIECE, A HOUSING HAVING A WORK TRANSFER CHAMBER FORMED IN ONE PORTION THEREOF AND A HEAT CHAMBER FORMED IN ANOTHER PORTION THEREOF AND IN ADJACENT RELATION TO SAID WORK TRANSFER CHAMBER, SAID HEAT CHAMBER BEING NORMALLY MAINTAINED AT A VACUUM PRESSURE AND AT A RELATIVELY HIGH TEMPERATURE, MEANS FOR TRANSFERRING THE WORK PIECE FROM SAID WORK TRANSFER CHAMBER TO SAID HEAT CHAMBER FOR THE HEAT TREATMENT THEREOF, AND FOR REMOVING SAID WORK PIECE FROM SAID HEAT CHAMBER AFTER THE HEAT TREATMENT THEREOF, MEANS FOR SEALING SAID HEAT CHAMBER UPON WITHDRAWAL OF SAID WORK PIECE FROM SAID HEAT CHAMBER BY SAID TRANSFERRING MEANS, THEREBY MAINTAINING THE RELATIVELY HIGH TEMPERATURE AND VACUUM PRESSURE THEREIN, MEANS FOR COOLING SAID SEALING MEANS INCLUDING A PLURALITY OF COOLING CHANNELS FORMED IN SAID SEALING MEANS, AND TUBULAR GUIDE MEANS FOR GUIDING SAID SEALING MEANS IN THE MOVEMENT THEREOF AND COMMUNICATING WITH SAID COOLING
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) | 1967-03-10 | 1967-09-09 | 1968-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-10 | 1971-09-09 | 1972-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-10 | 1975-09-09 | 1976-03-10 | $7700.00 | Window Closed / Lapsed |