Patent US5476140A successfully refreshed from Google Patents.
Patent US4520742A successfully refreshed from Google Patents.
US4520742A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seed planter attachment for chisel plow
Assignee: Individual
•
Filing: 1984-09-14
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Granted: 1985-06-04
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Expires: 2004-09-14
Abstract
Abstract An attachment for a chisel plow comprising a seed planter resiliently connected to the shank of the chisel plow by means of a leaf spring rod, and gauge wheels detachably connected to the seed planter for maintaining a constant planting depth relative to the ground. The resilient rod provides lateral support for the seed planter so that structural connection to the plow frame is unnecessary.
Inventors
- 👤 Steven Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:15
CPC Classifications
A; A01; A01C; A01C5/00; A01C5/06; A01C5/062; A01C7/00; A01C7/20; A01C7/201; A01C7/203
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
127 words
A seed planter attached to a vertically oriented chisel plow shank, said seed planter comprising: (a) a boot; (b) spring means for mounting said boot in a rearwardly related position from the shank and for imparting a ground engaging bias to said boot; (c) mounting means for removably and infinitely variably attaching said spring means to said shank at any vertical location along the length thereof so as to adjust the amount of said ground engaging bias; (d) depth regulating means for regulating the depth of penetration of said boot into the ground independent of the depth the chisel plow penetrates the ground; and (e) depth adjustment means interconnecting said boot and said depth regulating means for adjusting the depth at which said boot penetrates the ground.
Claim 2
Dependent Claim
127 words
A seed planter attached to a vertically oriented chisel plow shank, said seed planter comprising: (a) a boot; (b) spring means for mounting said boot in a rearwardly related position from the shank and for imparting a ground engaging bias to said boot; (c) mounting means for removably and infinitely variably attaching said spring means to said shank at any vertical location along the length thereof so as to adjust the amount of said ground engaging bias; (d) depth regulating means for regulating the depth of penetration of said boot into the ground independent of the depth the chisel plow penetrates the ground; and (e) depth adjustment means interconnecting said boot and said depth regulating means for adjusting the depth at which said boot penetrates the ground.
Claim 3
Dependent Claim
20 words
The seed planter of claim 1 wherein the adjustment of said mounting means and said depth adjustment means are independent.
Claim 4
Dependent Claim
24 words
The seed planter of claim 1 wherein said spring means provides the sole longitudinal and lateral support for the planter relative to the shank.
Claim 5
Dependent Claim
17 words
The seed planter of claim 1 wherein said spring means comprises at least one resiliently flexible rod.
Claim 6
Dependent Claim
32 words
The seed planter of claim 4 wherein said flexible rod is a U-shaped element having two generally horizontal legs the ends of which are attached respectively to said boot and the shank.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-06-03 | 1988-12-03 | 1989-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-03 | 1992-12-03 | 1993-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-03 | 1996-12-03 | 1997-06-04 | $7700.00 | Window Closed / Lapsed |