Valve unit for a quick-changer and quick-change system

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 10214873
APP PUB NO 20170159263A1
SERIAL NO

15371287

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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The invention relates to a valve unit for the exclusive hydraulic actuation of the locking means of a mechanical quick-changer for attachments of a construction machine, wherein the valve unit comprises a feed pressure connector for applying the feed pressure, a first valve unit outlet for connecting an unlocking pressure line, a second valve unit outlet for connecting a locking pressure line, at least one discharge to the tank, and at least two switchable directional valves, with the feed pressure connector being connected or connectable to the second valve unit outlet via a serial connection of the at least two switchable directional valves.

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First Claim

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Patent Owner(s)

  • LIEBHERR-HYDRAULIKBAGGER GMBH

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Meier, Simon Amendingen, DE 23 301
Zitterbart, Thomas Dietenheim, DE 16 137

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