DEVICE FOR ACTUATING SEQUENTIALLY TWO OR MORE CYLINDERS

WIPO Patent Application WO/2020/254900

A9

Device for the sequential actuation of two or more cylinders, comprising: a first conduit (2), equipped with a first branch (21), arranged to be connected to a chamber of a first cylinder (10), and a second branch (22), arranged to be connected to a chamber of a second cylinder (10); a second conduit (3), equipped with a first branch (31), arranged to be connected to the other chamber of the first cylinder (10), and a second branch (32), arranged to be connected to the other chamber of the second cylinder (11); a first control valve (4), arranged along the second branch (22) of the first conduit (2), which is movable between an opening configuration, in which it allows the flow along the second branch (22) of the first conduit (2), and a closing configuration, in which it prevents the flow along the second branch (22) of the first conduit (2); a first constriction (51), arranged along the first branch (31) of the second conduit (3); a first pilot conduit (41), which connects the first control valve (4) and the first branch (31) of the second conduit at an intermediate point between the connection to the first cylinder (10) and the first constriction (51), and drives the control valve (4) towards the closed configuration.

WO/2000/076844	DEVICE FOR SIMULTANEOUSLY INTERLOCKING A PLURALITY OF ACTUATORS
JPS586880	[Title of the device] The hydraulic circuit for rise-and-fall devices in operation-in-height vehicles

BRUNI SIMONE (IT)
PEDRAZZI ALBERTO (IT)
GUERZONI DAVIDE (IT)

PCT/IB2020/055215

April 01, 2021

June 03, 2020

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BOSCH REXROTH OIL CONTROL S P A (IT)

F15B11/20

ROBERT BOSCH GMBH (DE)

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