US3578090A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Subsoiler chisel plow
Assignee: Individual
•
Filing: 1969-02-04
•
Granted: 1971-05-11
•
Expires: 1989-02-04
Abstract
Abstract A subsoiler chisel plow including a horizontal, perforated or apertured frame having a plurality of downwardly and forwardly extending chisel teeth secured to the frame. The frame has pairs of horizontally spaced hitch brackets on the forward side thereof and has a special angle of attack adjustment structure projecting upwardly therefrom and adapted for connection to the central hitch of a towing vehicle having a three-point hitch connection.
Inventors
- 👤 Ted L Cline
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:53
CPC Classifications
A; A01; A01B; A01B13/00; A01B13/08
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
146 words
A subsoiler chisel plow comprising: A horizontally extending frame having a forward side and a rear side; a plurality of downwardly and forwardly extending chisel blades secured to said frame; a pair of parallel, vertically extending plates secured to said frame and projecting upwardly therefrom; an additional chisel blade having an upper end portion secured between said parallel, vertically extending plates and extending downwardly and forwardly therefrom; a central hitch plate pivotally secured between the forward, upper end portions of said parallel, vertically extending plates and projecting above said parallel plates, said hitch plate being adapted for connection of a hitch link thereto; an adjustment plate secured rigidly between the rear, upper end portions of said parallel vertically extending plates; and adjustable length means connected between said central hitch plate and said adustment plate for pivoting said hitch plate toward and away from said adjustment plate.
Claim 2
Dependent Claim
146 words
A subsoiler chisel plow comprising: A horizontally extending frame having a forward side and a rear side; a plurality of downwardly and forwardly extending chisel blades secured to said frame; a pair of parallel, vertically extending plates secured to said frame and projecting upwardly therefrom; an additional chisel blade having an upper end portion secured between said parallel, vertically extending plates and extending downwardly and forwardly therefrom; a central hitch plate pivotally secured between the forward, upper end portions of said parallel, vertically extending plates and projecting above said parallel plates, said hitch plate being adapted for connection of a hitch link thereto; an adjustment plate secured rigidly between the rear, upper end portions of said parallel vertically extending plates; and adjustable length means connected between said central hitch plate and said adustment plate for pivoting said hitch plate toward and away from said adjustment plate.
Claim 3
Dependent Claim
68 words
A subsoiler chisel plow as defined in claim 1 and further characterized in having: a first pair of hitch brackets on the forward side of said frame and horizontally spaced from said parallel, vertically extending plates; a second pair of hitch brackets on the forward side of said frame and located on the opposite side of said parallel, vertically extending plates from said first pair of hitch brackets.
Claim 4
Dependent Claim
54 words
A subsoiler chisel plow as defined in claim 1 wherein said frame comprises: a forward transverse frame member; a rear transverse frame member spaced horizontally from and extending parallel to said forward transverse frame member; and a pair of horizontally spaced, substantially parallel side frame members interconnecting said forward and rear transverse frame members.
Claim 5
Dependent Claim
18 words
A subsoiler chisel plow as defined in claim 1 wherein said adjustable length means comprises a turnbuckle assembly.
Claim 6
Dependent Claim
43 words
A subsoiler chisel plow as defined in claim 1 and further characterized to include chisel blade securing plates secured to said frame; and shear pins securing the upper end of each of said chisel blades to one of said chisel blade securing plates.
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) | 1974-05-10 | 1974-11-09 | 1975-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-10 | 1978-11-09 | 1979-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-10 | 1982-11-09 | 1983-05-11 | $7700.00 | Window Closed / Lapsed |