Patent US3221380A successfully refreshed from Google Patents.
US3221380A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ladle addition feeding mechanism with independently controlled feeder conveyor
Assignee: Individual
•
Filing: 1962-12-21
•
Granted: 1965-12-07
•
Expires: 1982-12-21
Abstract
No abstract record available.
Inventors
- 👤 June H Reighart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:00
CPC Classifications
F; F27; F27D; F27D3/00; F27D3/0025; F27D3/0026; F27D21/00; F27D21/0035; F27D3/10; F27D2003/0001; F27D2003/0006; F27D2003/0008; F27D2003/0034; F27D2003/0038; F27D3/12; F27D2003/125; F27D2003/127; F27D3/15; F27D3/1509
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
109 words
LADE ADDITION FEEDING MECHANISM INCLUDING A MATERIAL HOPPER HAVING A DISCHARGE OUTLET, GATE MEANS NORMALLY CLOSING SAID OUTLET, ELECTRIC POWER-OPERATED MEANS CONNECTED TO SAID GATE MEANS, FLUID POWER-OPERATED MEANS CONNECTED TO SAID GATE MEANS, VALVE CONTROLLED MEANS FOR ADMITTING FLUID PRESSURE TO SAID FLUID POWER-OPERATED MEANS FOR OPERATING SAID GATE FOR DISCHARGING A PREDETERMINED AMOUNT OF MATERIAL THROUGH SAID OUTLET, A SUBSTANTIALLY HORIZONTAL CONVEYOR POSITIONED BENEATH SAID GATE FOR RECEIVING MATERIAL DISCHARGED FROM SAID HOPPER, AND INDEPENDENT MEANS FOR OPERATING SAID CONVEYOR FOR DISCHARGING MATERIAL THEREFROM WHEREBY FEEDING OF THE REQUIRED AMOUNT OF MATERIAL FROM THE HOPPER INTO SAID HORIZONTAL CONVEYOR MAY BE STARTED AT ANY TIME PRIOR TO
References Cited (Backward Citations)
US1521276A
Cited
US1040703A
Cited
GB183260A
Cited
US1493118A
Cited
US2473160A
Cited
US2665798A
Cited
US2679335A
Cited
US2823791A
Cited
US2932430A
Cited
US3010563A
Cited
US2917207A
Cited
US3058621A
Cited
US3024765A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |