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Hydraulic cylinder for an agricultural row unit having an uplift accumulator and a down pressure accumulator
US9681601B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9681601-B2 |
| Application number | US-201514593492-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 9, 2015 |
| Priority date | Jan 9, 2015 |
| Publication date | Jun 20, 2017 |
| Grant date | Jun 20, 2017 |
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Abstract
Official abstract text for this publication.
An agricultural row unit includes a gauge wheel that engages the soil to control the elevation of the row unit; a soil-engaging tool mounted to permit vertical movement of the tool relative to the row unit; a hydraulic cylinder having a movable rod and containing a pressurized hydraulic fluid for applying a down force to the the tool to urge the tool into the soil; an uplift accumulator housed within the rod and exposed to the hydraulic fluid to permit upward movement of the tool in response to increased resistance by the soil to downward movement of the tool, while applying a force resisting upward movement of the tool; and a down pressure accumulator coupled to the hydraulic cylinder to permit downward movement of the tool in response to decreased resistance by the soil to downward movement of the tool, while applying a force resisting downward movement of the tool.
First claim
Opening claim text (preview).
The invention claimed is: 1. An agricultural row unit comprising a frame having a gauge wheel that engages the soil to control the elevation of the frame, a soil-engaging tool coupled to said frame to permit vertical movement of said tool relative to said frame, a hydraulic cylinder having a movable rod and containing a pressurized hydraulic fluid for applying a down force to said frame or said tool to urge the tool into the soil, an uplift accumulator in fluid communication…
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Classifications
Human Necessities · mapped topic
Human Necessities · mapped topic
Mechanical Engineering · mapped topic
- A01C7/205Primary
Human Necessities · mapped topic
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Frequently asked questions
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- What does patent US9681601B2 cover?
- An agricultural row unit includes a gauge wheel that engages the soil to control the elevation of the row unit; a soil-engaging tool mounted to permit vertical movement of the tool relative to the row unit; a hydraulic cylinder having a movable rod and containing a pressurized hydraulic fluid for applying a down force to the the tool to urge the tool into the soil; an uplift accumulator housed …
- Who is the assignee on this patent?
- Dawn Equipment Company
- What technology area does this patent fall under?
- Primary CPC classification A01C7/205. Mapped technology areas include Human Necessities.
- When was this patent published?
- Publication date Tue Jun 20 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).