Actuant Corporation

Laurentius Andreas Gerhardus Mentink

Johnny Antonius Jacobus Wiggemans

The present invention relates to a hydraulic actuating device for a device having a first and a second hydraulically moveable component. This actuating device comprises a first and a second hydraulic actuator, respectively, for moving the first and second moveable components. The first and second actuators each have a housing in which there is a space in which a piston and piston rod assembly can move in a reciprocating manner, with a piston and a piston rod which is coupled to the piston and projects out of the housing. The piston delimits a first working chamber and a second working chamber in the housing. The housing is provided with a first and a second connection, which are respectively in communication with the first and second working chambers in order to supply and discharge hydraulic fluid in order to displace the piston and piston rod assembly. The actuating device further comprises a connecting line which forms an open connection between the second working chamber of the first actuator and the first working chamber of the second actuator. The actuating device also comprises a pump having a delivery port and a suction port of the pump being connected to the reservoir, and valve means, having one or more actuable valves. The hydraulic actuating device is useful in controlling convertible tops of automobiles.

Hydraulic actuating device, in particular for a convertible-top assembly of a vehicle

A hydraulic actuating device, for a vehicle cover and an associated lock for locking the cover in the closed position, has a cover actuator and a lock actuator which each are provided with a first and second connection, which are respectively in communication with an associated first and second opening adjoining the actuator space. The cover actuator is provided with a third opening, which is connected to the second connection of the lock actuator. The first connection of the cover actuator and the first connection of the lock actuator are connected to a common connecting line with a single actuable valve, which in a first position connects the delivery port of the pump to the connecting line. The second connection of the cover actuator is in communication with the delivery port of the pump.

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Haaksbergen, Netherlands

Laurentius Andreas Gerhardus Mentink