US3601201A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plow colter
Assignee: Individual
•
Filing: 1968-11-12
•
Granted: 1971-08-24
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Expires: 1988-11-12
Abstract
Abstract A plow colter assembly including a vertically disposed first shaft adapted to be operatively connected to the horizontally disposed plow beam and having a hollow bearing secured to and spaced from the first shaft. The second shaft is rotatably mounted in the bearing means and has a disc support arm operatively pivotally secured thereto which extends downwardly and rearwardly therefrom. A spring-loaded locking means yieldably maintains the disc support arm in an operative pivotal position with respect to the second shaft. The locking means is overcome or disengaged when the disc strikes a rock or the like to permit the disc support arm to pivot upwardly so that the disc will pass over the rock without damaging the colter assembly. The springloaded locking means returns the disc support arm to its operative position when the disc has passed over the rock.
Inventors
- 👤 Vincent O Schmitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:06
CPC Classifications
A; A01; A01B; A01B61/00; A01B61/04; A01B61/044; A01B61/046
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
363 words
In a colter assembly for a plow having a beam means, said plow having rearward and forward ends, a hollow bearing means operatively secured to said beam means and having upper and lower ends, a shaft rotatably mounted in said bearing means and having upper and lower ends, a support means operatively secured to said shaft adjacent the lower end thereof, a disc support arm operatively pivotally secured adjacent its upper end to said support means, said disc support arm being pivotally movable from first to second positions, said disc support arm having a disc means rotatably secured at its lower end, said disc support arm normally extending downwardly and rearwardly from said support means, said disc support arm having a notch formed therein adjacent its upper rearward end, a spring-loaded latch means having upper and lower ends and being operatively pivotally secured at its upper end to said support means and having its lower end normally received by said notch, said spring-loaded latch means maintaining said disc support arm in its first position until a predetermined force is applied to said disc means to overcome the force of said spring-loaded latch means, said disc support arm pivotally moving upwardly to its second position when said predetermined force is applied to said disc means, said disc support arm being returned to its first position by said spring-loaded latch means after said predetermined force is removed from said disc means, said support means comprising a plate means having first and second plate members positioned on opposite sides of the upper end of said support arm, one of said plate members being rigidly secured to said shaft, said latch means being pivotally connected to said plate members and being positioned therebetween rearwardly of the upper end of said support arm, said notch receiving at least a portion of the lower end of said latch means therein and being normally positioned below and rearwardly of the pivotal connection of said latch means, said spring-loaded latch means including a spring means connected to and extending between said plate means and said latch means to normally urge said lower end of said latch means downwardly into said notch.
Claim 2
Dependent Claim
363 words
In a colter assembly for a plow having a beam means, said plow having rearward and forward ends, a hollow bearing means operatively secured to said beam means and having upper and lower ends, a shaft rotatably mounted in said bearing means and having upper and lower ends, a support means operatively secured to said shaft adjacent the lower end thereof, a disc support arm operatively pivotally secured adjacent its upper end to said support means, said disc support arm being pivotally movable from first to second positions, said disc support arm having a disc means rotatably secured at its lower end, said disc support arm normally extending downwardly and rearwardly from said support means, said disc support arm having a notch formed therein adjacent its upper rearward end, a spring-loaded latch means having upper and lower ends and being operatively pivotally secured at its upper end to said support means and having its lower end normally received by said notch, said spring-loaded latch means maintaining said disc support arm in its first position until a predetermined force is applied to said disc means to overcome the force of said spring-loaded latch means, said disc support arm pivotally moving upwardly to its second position when said predetermined force is applied to said disc means, said disc support arm being returned to its first position by said spring-loaded latch means after said predetermined force is removed from said disc means, said support means comprising a plate means having first and second plate members positioned on opposite sides of the upper end of said support arm, one of said plate members being rigidly secured to said shaft, said latch means being pivotally connected to said plate members and being positioned therebetween rearwardly of the upper end of said support arm, said notch receiving at least a portion of the lower end of said latch means therein and being normally positioned below and rearwardly of the pivotal connection of said latch means, said spring-loaded latch means including a spring means connected to and extending between said plate means and said latch means to normally urge said lower end of said latch means downwardly into said notch.
Claim 3
Dependent Claim
46 words
The assembly of claim 1 wherein said latch means has a first ear member secured thereto and extending laterally therefrom, said other plate member having a second ear member secured thereto and extending laterally therefrom, said spring means secured to and extending between said ear members.
Claim 4
Dependent Claim
58 words
The assembly of claim 2 wherein said spring means is secured at its rearward end to said first ear member at a point rearwardly and below the pivotal axis of said Latch means and is secured at its forward end to said second ear member at a point forwardly and below the pivotal axis of said latch means.
Claim 5
Dependent Claim
45 words
The assembly of claim 3 wherein said support arm extends downwardly and rearwardly from its pivotal connection to said plate means, said notch being disposed below and rearwardly of the pivotal connection of said support arm when said support arm is in its first position.
References Cited (Backward Citations)
US762583A
Cited
US3061018A
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US3319589A
Cited
US3451489A
Cited
US3351139A
Cited
US3411589A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-23 | 1975-02-22 | 1975-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-23 | 1979-02-22 | 1979-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-23 | 1983-02-22 | 1983-08-24 | $7700.00 | Window Closed / Lapsed |