US3406915A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fertilizer spreading apparatus
Assignee: Amazonen Werke H Dreyer SE and Co KG
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Filing: 1965-02-16
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Granted: 1968-10-22
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Expires: 1985-02-16
Abstract
No abstract record available.
Inventors
- 👤 Dreyer Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:05
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/12; E01C19/20; E01C19/201; E01C19/202; E01C19/203; A; A01; A01C; A01C17/00; Y; Y02; Y02P; Y02P60/00; Y02P60/20; Y02P60/21
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A FERTILIZER SPREADING APPARATUS WHICH COMPRISES: (A) A HOPPER FOR RECEIVING THE FERTILIZER TO BE SPREAD, SAID HOPPER HAVING AT LEAST ONE FERTILIZER DISCHARGE ORIFICE, SAID ORIFICE BEING DISPOSED ON THE HOPPER SO THAT THE FLOW OF FERTILIZER THERETHROUGH IS AIDED BY GRAVITY; (B) A ROTATABLE SPREADER PLATE IN UNDERLYING RELATIONSHIP TO SAID HOPPER ORIFICE, POSITIONED TO CAPTURE FERTILIZER FLOWING THROUGH SAID ORIFICE AND TO SPREADINGLY DISTRIBUTE SUCH BY CENTRIFUGAL FORCE; (C) A DRIVE SHAFT CONNECTED TO SAID SPREADER PLATE ADAPTED TO ROTATE SUCH AND EXTENDING AT LEAST TO THE BOTTOM OF SAID HOPPER; (D) EASILY ENGAGEABLE AND DISENGAGEABLE EJECTOR MEANS WITHIN SAID HOPPER DISENGAGINGLY ENGAGED TO SAID SHAFT THROUGH ENGAGEMENT MEANS AT LEAST PARTIALLY OUTSIDE SAID HOPPER, WHICH EJECTOR MEANS IS ADAPTED
Claim 2
Dependent Claim
123 words
A FERTILIZER SPREADING APPARATUS WHICH COMPRISES: (A) A HOPPER FOR RECEIVING THE FERTILIZER TO BE SPREAD, SAID HOPPER HAVING AT LEAST ONE FERTILIZER DISCHARGE ORIFICE, SAID ORIFICE BEING DISPOSED ON THE HOPPER SO THAT THE FLOW OF FERTILIZER THERETHROUGH IS AIDED BY GRAVITY; (B) A ROTATABLE SPREADER PLATE IN UNDERLYING RELATIONSHIP TO SAID HOPPER ORIFICE, POSITIONED TO CAPTURE FERTILIZER FLOWING THROUGH SAID ORIFICE AND TO SPREADINGLY DISTRIBUTE SUCH BY CENTRIFUGAL FORCE; (C) A DRIVE SHAFT CONNECTED TO SAID SPREADER PLATE ADAPTED TO ROTATE SUCH AND EXTENDING AT LEAST TO THE BOTTOM OF SAID HOPPER; (D) EASILY ENGAGEABLE AND DISENGAGEABLE EJECTOR MEANS WITHIN SAID HOPPER DISENGAGINGLY ENGAGED TO SAID SHAFT THROUGH ENGAGEMENT MEANS AT LEAST PARTIALLY OUTSIDE SAID HOPPER, WHICH EJECTOR MEANS IS ADAPTED
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) | 1971-10-22 | 1972-04-22 | 1972-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-22 | 1976-04-22 | 1976-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-22 | 1980-04-22 | 1980-10-22 | $7700.00 | Window Closed / Lapsed |