US3210085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for spreading of artificial fertilizers
Assignee: Vyzkumny A Zkusebni Letecky Ustav AS
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Filing: 1964-01-02
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Granted: 1965-10-05
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Expires: 1984-01-02
Abstract
No abstract record available.
Inventors
- 👤 Rastak Emil
- 👤 Machalka Stanislav
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:23
CPC Classifications
A; A01; A01C; A01C17/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
170 words
A DEVICE FOR SPREADING A PARTICULATE MATERIAL FROM AN AIRCRAFT COMPRISING, IN COMBINATION. (A) A HOPPER HAVING A DOWNWARDLY OPEN ORIFICE; (B) OUTLET MEANS DEFINING AN OUTLET CHAMFBER UNDER SAID ORFICE, SAID CHAMBER HAVING AN AXIS AND BEING FORMED WITH A PLURALITY OF OPENINGS THEREIN, SAID OPENINGS BEING ANGULARLY SPACED ABOUT SAID AXIS FOR RADIALLY OUTWARD PASSAGE OF PARTICULATE MATERIAL FROM SAID CHAMBER; (C) CLOSING MEANS FOR SELECTIVELY CLOSING SAID OPENINGS; (D) A METERING DISK MOUNTED IN SAID CHAMBER FOR ROTATION ABOUT SAID AXIS AND FOR AXIAL MOVEMENT TOWARD AND AWAY FROM A POSITION OF SEALING ENGAGEMENT WITH SAID ORFICE; (E) SPREADING MEANS INCLUDING A PLURALITY OF SPOUT MEANS ARRANGED FOR ROTATORY MOVEMENT ABOUT SAID AXIS IN A PATH ADJACENT SAID OPENING AND OUTSIDE SAID CHAMBER; (F) DIFFERENTIAL DRIVE MEANS OPERATIVELY CONNECTED TO SAID METERING DISK AND TO SAID SPREADING MEANS FOR SIMULTANEOUSLY ROTATING THE SAME SAID AXIS AT DIFFERENT SPEEDS; AND (G) ACTUATING MEANS FOR ACTUATING AXIAL MOVEMENT OF SAID METERING DISK TOWARD AND AWAY FROM SAID POSITION THEREOF.
Claim 2
Independent Claim
170 words
A DEVICE FOR SPREADING A PARTICULATE MATERIAL FROM AN AIRCRAFT COMPRISING, IN COMBINATION. (A) A HOPPER HAVING A DOWNWARDLY OPEN ORIFICE; (B) OUTLET MEANS DEFINING AN OUTLET CHAMFBER UNDER SAID ORFICE, SAID CHAMBER HAVING AN AXIS AND BEING FORMED WITH A PLURALITY OF OPENINGS THEREIN, SAID OPENINGS BEING ANGULARLY SPACED ABOUT SAID AXIS FOR RADIALLY OUTWARD PASSAGE OF PARTICULATE MATERIAL FROM SAID CHAMBER; (C) CLOSING MEANS FOR SELECTIVELY CLOSING SAID OPENINGS; (D) A METERING DISK MOUNTED IN SAID CHAMBER FOR ROTATION ABOUT SAID AXIS AND FOR AXIAL MOVEMENT TOWARD AND AWAY FROM A POSITION OF SEALING ENGAGEMENT WITH SAID ORFICE; (E) SPREADING MEANS INCLUDING A PLURALITY OF SPOUT MEANS ARRANGED FOR ROTATORY MOVEMENT ABOUT SAID AXIS IN A PATH ADJACENT SAID OPENING AND OUTSIDE SAID CHAMBER; (F) DIFFERENTIAL DRIVE MEANS OPERATIVELY CONNECTED TO SAID METERING DISK AND TO SAID SPREADING MEANS FOR SIMULTANEOUSLY ROTATING THE SAME SAID AXIS AT DIFFERENT SPEEDS; AND (G) ACTUATING MEANS FOR ACTUATING AXIAL MOVEMENT OF SAID METERING DISK TOWARD AND AWAY FROM SAID POSITION THEREOF.
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) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |