US3274307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sjoy xw
Assignee: —
•
Filing: —
•
Granted: 1966-09-20
•
Expires: 1983-09-20
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:38
CPC Classifications
B; B29; B29C; B29C41/00; B29C41/02; B29C41/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A METHOD FOR REMOVING FOAM AND ENTRAINED AIR BUBBLES FROM A SLURRY OF CASTING COMPOSITION RECOVERED AS AN INCIDENT OF A CASTING OPERATION, WH9CH METHOD COMPRISES CONTINUOUSLY COLLECTING THE RECOVERED SLURRY OF CASTING COMPOSITION IN A VESSEL WHICH IS RELATIVELY DEEP AS COMPARED TO ITS WIDTH, MAINTAINING SAID VESSEL ESSENTIALLY FILLED WITH SAID CASTINGCOMPOSITION, SUBJECTING THE VESSEL AND THE CASTIING COMPOSITION THEREIN TO VIBRATION AT A FREQUENCY ON THE ORDER OF FROM 2000 TO 5000 VIBRATIONS PER MINUTE, AND CONTINUOUSLY WITHDRAWING CASTING COMPOSITION FROM THE LOWERMOST PORTION OF SAID RELATIVELY DEEP VESSEL.
Claim 2
Independent Claim
92 words
A METHOD FOR REMOVING FOAM AND ENTRAINED AIR BUBBLES FROM A SLURRY OF CASTING COMPOSITION RECOVERED AS AN INCIDENT OF A CASTING OPERATION, WH9CH METHOD COMPRISES CONTINUOUSLY COLLECTING THE RECOVERED SLURRY OF CASTING COMPOSITION IN A VESSEL WHICH IS RELATIVELY DEEP AS COMPARED TO ITS WIDTH, MAINTAINING SAID VESSEL ESSENTIALLY FILLED WITH SAID CASTINGCOMPOSITION, SUBJECTING THE VESSEL AND THE CASTIING COMPOSITION THEREIN TO VIBRATION AT A FREQUENCY ON THE ORDER OF FROM 2000 TO 5000 VIBRATIONS PER MINUTE, AND CONTINUOUSLY WITHDRAWING CASTING COMPOSITION FROM THE LOWERMOST PORTION OF SAID RELATIVELY DEEP VESSEL.
References Cited (Backward Citations)
US1418273A
Cited
US2168972A
Cited
US2485857A
Cited
US2556954A
Cited
US2996038A
Cited
US2739567A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |