Automated re-centering of steering system
US-9950734-B2 · Apr 24, 2018 · US
Windrower steering system
US8997902B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8997902-B2 |
| Application number | US-201313905521-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 30, 2013 |
| Priority date | May 30, 2013 |
| Publication date | Apr 7, 2015 |
| Grant date | Apr 7, 2015 |
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- Title
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Abstract
Official abstract text for this publication.
A steering system for a differential steered self-propelled agricultural windrower, windrower speed and direction controlled by adjusting the pivotal position of rotatable pintel arms to control the output of a pair of tandem-mounted hydraulic drive pumps and provide motive power for the windrower. A control input shaft that is both rotatable and axially moveable manages the relative positioning of the pintel arms. A hydraulic steering motor is operably connected to the input shaft. Rotation of the hydraulic steering motor is managed by a steering control valve attached to a cab-mounted windrower steering wheel.
First claim
Opening claim text (preview).
Having thus described the invention, what is claimed is: 1. A mechanism of direction control for a differential speed steered agricultural machine comprising: right and left drive motors; right and left hydraulic drive pumps connected in tandem to and driven by an engine, each drive pump having a displacement control mechanism including a pintel arm rotatable between first and second positions, rotation of which changes hydraulic fluid flow rate from respective drive pumps to co…
Assignees
Inventors
Classifications
- B62D11/005Primary
Operations & Transport · mapped topic
Operations & Transport · mapped topic
- B62D11/001Primary
Operations & Transport · mapped topic
- B62D5/093Primary
Operations & Transport · mapped topic
Operations & Transport · mapped topic
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Frequently asked questions
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- What does patent US8997902B2 cover?
- A steering system for a differential steered self-propelled agricultural windrower, windrower speed and direction controlled by adjusting the pivotal position of rotatable pintel arms to control the output of a pair of tandem-mounted hydraulic drive pumps and provide motive power for the windrower. A control input shaft that is both rotatable and axially moveable manages the relative positionin…
- Who is the assignee on this patent?
- Cnh America Llc, Cnh Ind America Llc
- What technology area does this patent fall under?
- Primary CPC classification B62D11/005. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Apr 07 2015 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).