Patent US3697289A successfully refreshed from Google Patents.
US3697289A
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US
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Automatic popcorn popping method
Assignee: WESTERN ICEE Corp A CORP OF CALIFORNIA
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Filing: 1969-11-12
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Granted: 1972-10-10
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Expires: 1989-11-12
Abstract
Abstract THE METHOD FOR AUTOMATICALLY POPPING CORN IN HEATED SEASONING OIL. RAW CORN IS RED BY N AIR CONVEYOR TO A HOPPER ABOVE THE POPPING POT, AND AN AIR CURRENT IS USED FOR INJECTING A CHARGE OF CORN AND SALT INTO THE POT. SEASONING OIL IS METERED INTO THE POT BY AN ADJUSTABLE VALVE PROVIDING PRECISE VOLUME MEASUREMENT. THE POT REMAINS CLOSED THROUGHOUT A SERIES OF POPPING CYCLES. A VACUUM IS CREATED IN THE POT DURING THE POPPING CYCLE TO PREVENT EFFLUENT FROM DISCHARGING INTO THE DISPLAY CASE AND TO DRAW IT INTO THE CONDENSER.
Inventors
- 👤 Alan M Day
- 👤 Gordon D Browning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:08
CPC Classifications
A; A23; A23L; A23L7/00; A23L7/10; A23L7/161; A23L7/174; A23L7/183; A23L7/187
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |