Patent US3219394A successfully refreshed from Google Patents.
US3219394A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic grain conveyor
Assignee: SECO Inc
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Filing: 1962-03-30
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Granted: 1965-11-23
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Expires: 1982-03-30
Abstract
No abstract record available.
Inventors
- 👤 James R Moss
- 👤 Jr Edward T Koch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:24
CPC Classifications
B; B65; B65G; B65G53/00; B65G53/04; B65G53/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
173 words
IN A PNEUMATIC GRAIN CONVEYOR HAVING A GRAIN RECEIVING CHAMBER, AN INLET, AN OUTLET AND A SCREEN MEMBER IN SAID GRAIN CHAMBER BETWEEN SAID INLET AND SAID OUTLET, PNEUMATIC CONTROL MEANS COMPRISING: (A) A VALVE CHAMBER COMMUNICATING WITH SAID SCREEN MEMBER, (B) AN OUTLET CONDUIT CONTINUOUSLY COMMUNICATING WITH SAID VALVE CHAMBER, (C) SUCTION MEANS FOR DRAWING AIR THROUGH SAID OUTLET CONDUIT FROM SAID VALVE CHAMBER, (D) AN EXHAUST VALVE COMMUNICATING WITH SAID VALVE CHAMBER ON THE SAME SIDE OF SAID SCREEN MEMBER IS SAID OUTLET CONDUIT; (E) OPERATIVE MEANS NORMALLY CLOSING SAID EXHAUST VALVE TO PERMIT THE FREE PASSAGE OF AIR FROM SAID GRAIN RECEIVING CHAMBER THROUGH SAID SCREEN MEMBER, SAID VALVE CHAMBER AND SAID OUTLET CONDUIT, AND (F) MEANS FOR ACTUATING SAID OPERATIVE MEANS TO OPEN SAID EXHAUST VALVE TO PERMIT AIR TO PASS THROUGH SAID EXHAUST VALVE INTO SAID VALVE CHAMBER, A PORTION OF SAID AIR FOLLOWING ONE PATH THROUGH SAID OUTLET CONDUIT AND ANOTHER PORTION OF SAID AIR FLOWING AN OTHER PATH THROUGH SAID SCREEN MEMBER INTO SAID RECEIVING CHAMBER.
Claim 2
Dependent Claim
173 words
IN A PNEUMATIC GRAIN CONVEYOR HAVING A GRAIN RECEIVING CHAMBER, AN INLET, AN OUTLET AND A SCREEN MEMBER IN SAID GRAIN CHAMBER BETWEEN SAID INLET AND SAID OUTLET, PNEUMATIC CONTROL MEANS COMPRISING: (A) A VALVE CHAMBER COMMUNICATING WITH SAID SCREEN MEMBER, (B) AN OUTLET CONDUIT CONTINUOUSLY COMMUNICATING WITH SAID VALVE CHAMBER, (C) SUCTION MEANS FOR DRAWING AIR THROUGH SAID OUTLET CONDUIT FROM SAID VALVE CHAMBER, (D) AN EXHAUST VALVE COMMUNICATING WITH SAID VALVE CHAMBER ON THE SAME SIDE OF SAID SCREEN MEMBER IS SAID OUTLET CONDUIT; (E) OPERATIVE MEANS NORMALLY CLOSING SAID EXHAUST VALVE TO PERMIT THE FREE PASSAGE OF AIR FROM SAID GRAIN RECEIVING CHAMBER THROUGH SAID SCREEN MEMBER, SAID VALVE CHAMBER AND SAID OUTLET CONDUIT, AND (F) MEANS FOR ACTUATING SAID OPERATIVE MEANS TO OPEN SAID EXHAUST VALVE TO PERMIT AIR TO PASS THROUGH SAID EXHAUST VALVE INTO SAID VALVE CHAMBER, A PORTION OF SAID AIR FOLLOWING ONE PATH THROUGH SAID OUTLET CONDUIT AND ANOTHER PORTION OF SAID AIR FLOWING AN OTHER PATH THROUGH SAID SCREEN MEMBER INTO SAID RECEIVING CHAMBER.
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) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |