Hydraulic drive circuit
US-9458864-B2 · Oct 4, 2016 · US
Meterless hydraulic system having displacement control valve
US8944103B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8944103-B2 |
| Application number | US-201113222895-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 31, 2011 |
| Priority date | Aug 31, 2011 |
| Publication date | Feb 3, 2015 |
| Grant date | Feb 3, 2015 |
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- Title
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Abstract
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A hydraulic system is disclosed. The hydraulic system may have a pump, a tank, a displacement actuator having first and second chambers, a regeneration valve, and a load-holding valve. The hydraulic system may also have a displacement control valve including a valve element, and a stationary cage portion at least partially forming a high-pressure passage fluidly connecting the pump and valve element, a low-pressure passage fluidly connecting the valve element and tank, a first displacement actuator passage fluidly connecting the valve element and first chamber, a second displacement actuator passage fluidly connecting the valve element and second chamber, a load-holding control passage fluidly connecting the valve element and load-holding valve, and a regeneration control passage fluidly connecting the valve element and regeneration valve. The displacement control valve may also include a movable cage portion that is movable to selectively restrict fluid flow through only the first and second displacement actuator passages.
First claim
Opening claim text (preview).
What is claimed is: 1. A displacement control valve, comprising: a valve element; a stationary cage portion surrounding the valve element and at least partially forming: a high-pressure passage; a low-pressure passage; a first displacement actuator passage; a second displacement actuator passage; and at least one control valve passage; and a movable cage portion disposed proximate the stationary cage portion and being movable to selectively restrict only the first a…
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Fixed Constructions · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Fixed Constructions · mapped topic
Fixed Constructions · mapped topic
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Frequently asked questions
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- What does patent US8944103B2 cover?
- A hydraulic system is disclosed. The hydraulic system may have a pump, a tank, a displacement actuator having first and second chambers, a regeneration valve, and a load-holding valve. The hydraulic system may also have a displacement control valve including a valve element, and a stationary cage portion at least partially forming a high-pressure passage fluidly connecting the pump and valve el…
- Who is the assignee on this patent?
- Opdenbosch Patrick, Knussman Michael L, Dierking Joshua, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification F15B7/006. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Feb 03 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).