Discharge pressure scale and lifting-lowering device having a discharge pressure scale of this type
US-10871177-B2 · Dec 22, 2020 · US
Valve assembly
US8973609B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8973609-B2 |
| Application number | US-201013261264-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 14, 2010 |
| Priority date | Oct 16, 2009 |
| Publication date | Mar 10, 2015 |
| Grant date | Mar 10, 2015 |
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- Title
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Abstract
Official abstract text for this publication.
A valve assembly for regulating the pressure of a pressure medium ( 2 ) of a pressure medium pump ( 3 ) to at least one first consumer ( 4 ) includes a pilot-controlled pressure control valve ( 5 ) with a main piston ( 6 ) acted on by the pressure medium ( 2 ) and a pilot piston ( 7 ). A pressure chamber ( 8 ) between a piston back side ( 9 ) of the main piston ( 6 ) and the pilot piston ( 7 ) can be relieved. A relief valve ( 10 ) is connected in a fluid-conducting manner to the pressure chamber ( 8 ), opens when pressure at the load sensor (LS) represents an out-of-operation mode of the consumer ( 4 ), and recirculates pressure medium ( 2 ) having a low pressure to a pressure medium reservoir ( 11 ) or to the pressure medium pump ( 3 ). The relief valve ( 10 ) closes when the pressure at the load sensor (LS) represents an in-operation mode of the consumer ( 4 ).
First claim
Opening claim text (preview).
What is claimed is: 1. A valve assembly for pressure control of a pressure medium from a pressure medium pump to at least one consumer, comprising: a pilot-operated pressure control valve having a main piston pressurizable by the pressure medium, having a pilot piston and having a first pressure chamber between a back of said main piston and said pilot piston that can be relieved; and a relief valve connected for carrying fluid to said first pressure chamber and opening at a pre…
Assignees
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Classifications
- F15B11/05Primary
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
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- What does patent US8973609B2 cover?
- A valve assembly for regulating the pressure of a pressure medium ( 2 ) of a pressure medium pump ( 3 ) to at least one first consumer ( 4 ) includes a pilot-controlled pressure control valve ( 5 ) with a main piston ( 6 ) acted on by the pressure medium ( 2 ) and a pilot piston ( 7 ). A pressure chamber ( 8 ) between a piston back side ( 9 ) of the main piston ( 6 ) and the pilot piston ( 7 ) …
- Who is the assignee on this patent?
- Hilzendegen Philipp, Bruck Peter, Albert Hermann, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification F15B11/05. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Mar 10 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).