Slide valve, in particular for controlling a motor vehicle automatic transmission
US-2015354715-A1 · Dec 10, 2015 · US
Hydraulic system for actuating at least one shifting element of a transmission
US8991276B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8991276-B2 |
| Application number | US-201213539528-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 2, 2012 |
| Priority date | Jul 26, 2011 |
| Publication date | Mar 31, 2015 |
| Grant date | Mar 31, 2015 |
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Abstract
Official abstract text for this publication.
A hydraulic system ( 1 ) for actuating at least one shifting element ( 2 ) of a transmission. The hydraulic system comprises a regulating valve device ( 3 ) that can be preset and has a regulating valve slide ( 8 ), and a shifting valve device ( 4 ) which can also be preset and has a shifting valve slide ( 6 ). The shifting valve device ( 4 ) interacts with the regulating valve device ( 3 ). The regulating valve slide ( 8 ) and the shifting valve slide ( 6 ) are coaxially aligned with one another and move in opposite longitudinal directions within a common boring ( 24 ) of a housing ( 25 ). Each of the slides has a control surface ( 5, 14 ) which faces toward one another and can be pressurized with a pressure signal (p_VS) via a common pressure chamber ( 26 ).
First claim
Opening claim text (preview).
The invention claimed is: 1. A hydraulic system ( 1 ), for actuating at least one shifting element ( 2 ) of a transmission, comprising: a regulating valve device ( 3 ) that can be preset and having a regulating valve slide ( 8 ), an axial end face of the regulating valve slide is a control surface, and a shifting valve device ( 4 ) interacting with the shifting element ( 2 ) that can also be preset and having a shifting valve slide ( 6 ), an axial end face of the shifting valve…
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Mechanical Engineering · mapped topic
Cross-Sectional Technologies · mapped topic
- F16H61/0251Primary
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Cross-Sectional Technologies · mapped topic
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- What does patent US8991276B2 cover?
- A hydraulic system ( 1 ) for actuating at least one shifting element ( 2 ) of a transmission. The hydraulic system comprises a regulating valve device ( 3 ) that can be preset and has a regulating valve slide ( 8 ), and a shifting valve device ( 4 ) which can also be preset and has a shifting valve slide ( 6 ). The shifting valve device ( 4 ) interacts with the regulating valve device ( 3 ). Th…
- Who is the assignee on this patent?
- Herrmann Markus, Schmidt Thilo, Zahnradfabrik Friedrichshafen
- What technology area does this patent fall under?
- Primary CPC classification F16H61/0251. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Mar 31 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).