Digital Hydraulic Controller

Number of patents in Portfolio can not be more than 2000

United States of America Patent

APP PUB NO 20120073431A1
SERIAL NO

13322800

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A digital hydraulic controller has at least two rows of valve elements: one can connect a supply line to a controller output, the other can connect the controller output to an outlet line. The valve elements of each row are connected in parallel and are switchable individually or simultaneously in different combinations with each other and have different flow cross sections. The valve element with the smallest flow cross section is present twice in the row. A system unit has a differential cylinder and a digital hydraulic controller with four rows of valve elements, two of which are, with their common controller output, connected to the one pressure chamber of the differential cylinder, while the other two rows of valve elements are, with their common controller output, connected to the other pressure chamber of the differential cylinder. The differential cylinder can be used as a precisely adjustable linear actuator.

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Patent Owner(s)

Patent OwnerAddress
VALMET TECHNOLOGIES INCKEILASATAMA 5 ESPOO FI-02150

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hopponen, Ville Mantsala, FI 3 2
Ikonen, Arto Jarvenpaa, FI 2 0
Suomi, Eero Hameenlinna, FI 11 41

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