Patent US3295844A successfully refreshed from Google Patents.
US3295844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sintering furnace
Assignee: Individual
•
Filing: 1964-05-01
•
Granted: 1967-01-03
•
Expires: 1984-05-01
Abstract
No abstract record available.
Inventors
- 👤 Arthur C Neeley
- 👤 William J Yaggi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:54
CPC Classifications
B; B22; B22F; B22F5/00; B22F5/10; B22F5/106; B22F3/00; B22F3/003; B22F3/10; B22F2003/1042; B22F2998/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
AN IMPROVED SINTERING FURNACE FOR SINTERING OF SYMMETRICAL, HOLLOW POWDER COMPACTS INCAPABLE OF COMPLETE SELF-SUPPORT WHILE SINTERING, COMPRISING IN COMBINATION: A FURNACE ENCLOSURE, AN ANNULAR HEARTH DISPOSED WITHIN SAID FURNACE ENCLOSURE, A HOLLOW CYLINDRICAL MANDREL HAVING A LOWER END ABUTTING AGAINST THE INNER SURFACE OF SAID ANNULAR HEARTH, SAID ANNULAR HEARTH HAVING AN INCLINED UPPER SURFACE ADJACENT TO SAID MANDREL, SAID INCLINED UPPER SURFACE AND SAID MANDREL DEFINING AN ANNULAR TROUGH, AND POWDER FILLING SAND TROUGH FOR VERTICALLY SUPPORTING SAID COMPACTS, SAID POWDER HAVING SUBSTANTIALLY THE SAME SINTERING CHARACTERISTICS AS THE POWDER IN SAID POWDER COMPACTS, SAID POWDER FORMING A SUPPORT FOR SAID COMPACTS DURING A SINTERING OPERATION.
Claim 2
Dependent Claim
108 words
AN IMPROVED SINTERING FURNACE FOR SINTERING OF SYMMETRICAL, HOLLOW POWDER COMPACTS INCAPABLE OF COMPLETE SELF-SUPPORT WHILE SINTERING, COMPRISING IN COMBINATION: A FURNACE ENCLOSURE, AN ANNULAR HEARTH DISPOSED WITHIN SAID FURNACE ENCLOSURE, A HOLLOW CYLINDRICAL MANDREL HAVING A LOWER END ABUTTING AGAINST THE INNER SURFACE OF SAID ANNULAR HEARTH, SAID ANNULAR HEARTH HAVING AN INCLINED UPPER SURFACE ADJACENT TO SAID MANDREL, SAID INCLINED UPPER SURFACE AND SAID MANDREL DEFINING AN ANNULAR TROUGH, AND POWDER FILLING SAND TROUGH FOR VERTICALLY SUPPORTING SAID COMPACTS, SAID POWDER HAVING SUBSTANTIALLY THE SAME SINTERING CHARACTERISTICS AS THE POWDER IN SAID POWDER COMPACTS, SAID POWDER FORMING A SUPPORT FOR SAID COMPACTS DURING A SINTERING OPERATION.
References Cited (Backward Citations)
US971228A
Cited
US3082996A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |