US4677922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Single pass fracture planting system
Assignee: SHRULL DALE ROUTE 5 RUSSELLVILLE
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Filing: 1985-03-05
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Granted: 1987-07-07
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Expires: 2005-03-05
Abstract
Abstract A single pass fracture planting system comprised of a tractor which tows a subsoil fracture tiller and a drawn multi-function planter drawn by a unique hydraulically controlled hitch system. The tractor draws a subsoil fracture tilling system comprised of a plurality of plows which fracture the soil to a depth of approximately one and a half feet while leaving surface residue largely undisturbed. The suboil fracture blades are mounted on a platform having a storage tank for anhydrous delivered to the soil through tubes mounted on the shanks of the fracture tiller blades. A multi-function drawn planter is drawn behind the subsoil fracture tiller by a hitch system having a hydraulically controlled drawbar. The hitch system is comprised of a frame having a drawbar pivotally mounted and hydraulically damped at one end with the opposite end being free to swing from side to side in a controlled fashion. Drawbar locking hydraulic cylinders center the planter during a planting pass.
Inventors
- 👤 Dale Shrull
- 👤 Joe W. Hendricks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:14
CPC Classifications
A; A01; A01C; A01C23/00; A01C23/02; A01C23/023; A01B; A01B49/00; A01B49/04; A01B49/06
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
213 words
A single pass planting system; a tractor; sub-soil plow means; lift connecting means connecting said plow means to said tractor; planter means having planter bins for delivering seed, insecticide and fertilizer; hitch means connecting said planter means to said sub-soil plow means for trailing simultanaously with said sub-soil plow means; said hitch means having drawbar means connected to said planter means, said drawbar means mounted for pivotal movement at one end, the other end being connected to said planter means; a curved track on said hitch means beneath the end of said drawbar connected to said planter means; roller means mounted on said drawbar means; said roller means resting on said curved track supporting and guiding said drawbar when it is allowed to swing from side to side; hydraulic centering means connected to said drawbar for automatically centering said drawbar after a turn is made and during a planting pass; said hydraulic centering means comprising a pair of hydraulic cylinder means on either side of said drawbar abutting and holding said drawbar in a centered position and releasing said drawbar for swinging movement when retracted; multi-point pivot connecting means connecting said hitch means to said sub-soil plow means whereby said hitch means remains level whenever said sub-soil plow is lifted to make turns.
Claim 2
Dependent Claim
213 words
A single pass planting system; a tractor; sub-soil plow means; lift connecting means connecting said plow means to said tractor; planter means having planter bins for delivering seed, insecticide and fertilizer; hitch means connecting said planter means to said sub-soil plow means for trailing simultanaously with said sub-soil plow means; said hitch means having drawbar means connected to said planter means, said drawbar means mounted for pivotal movement at one end, the other end being connected to said planter means; a curved track on said hitch means beneath the end of said drawbar connected to said planter means; roller means mounted on said drawbar means; said roller means resting on said curved track supporting and guiding said drawbar when it is allowed to swing from side to side; hydraulic centering means connected to said drawbar for automatically centering said drawbar after a turn is made and during a planting pass; said hydraulic centering means comprising a pair of hydraulic cylinder means on either side of said drawbar abutting and holding said drawbar in a centered position and releasing said drawbar for swinging movement when retracted; multi-point pivot connecting means connecting said hitch means to said sub-soil plow means whereby said hitch means remains level whenever said sub-soil plow is lifted to make turns.
Claim 3
Dependent Claim
53 words
The planting system according to claim 1 in which said lift connecting means comprises; a yoke mounted on said tractor means attaching said yoke to said subsoil plow means at three points; the centermost point being connected to a spring loaded lift pin whereby said subsoil plow means remains level when being lifted.
Claim 4
Dependent Claim
26 words
The planting system according to claim 1 including drawbar damping means for damping the swinging movement of said drawbar to prevent shocks to said planter means.
Claim 5
Dependent Claim
19 words
The planting system according to claim 3 in which said hitch means includes 360 degree swivel mounted flotation tires.
Claim 6
Dependent Claim
41 words
A planting system according to claim 4 in which said hitch means includes a vertical stanchion, a plurality of quick disconnect means mounted on said stanchion whereby hoses between said tractor and said planter means may be easily connected and disconnected.
Claim 7
Dependent Claim
59 words
The planting system according to claim 1 including storage tanks mounting on said sub-soil plow means; a plurality of plow blades on said sub-soil plow means; a plurality of tubular conduits attached to and following the contour of a trailing edge of each of said plow blades for injecting a fluid into the ground as it is being plowed.
Claim 8
Dependent Claim
17 words
The planting system according to claim 6 in which said plow means includes adjustable depth gage wheels.
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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) | 1990-07-06 | 1991-01-05 | 1991-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-06 | 1995-01-05 | 1995-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-06 | 1999-01-05 | 1999-07-07 | $7700.00 | Window Closed / Lapsed |