Vehicle, in particular camper, with a hydraulically actuated...

Land vehicles: bodies and tops – Bodies – Camper

Reexamination Certificate

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Reexamination Certificate

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07144069

ABSTRACT:
A hydraulic actuating device for a roof part which is moveable between a closed position and an open position of a vehicle has a first hydraulic actuator and a second hydraulic actuator, which first and second actuators are designed to drive the moveable roof part in a parallel arrangement. The first and second hydraulic actuators each have a housing in which there is a space in which a piston member is accommodated, dividing the space into an opening chamber and a closing chamber, each housing being provided with an opening connection and a closing connection, which are respectively in communication with the opening chamber and the closing chamber, so that when pressurized hydraulic fluid is simultaneously fed to the opening connections of the first and second hydraulic actuators the roof part moves towards the open position, and when pressurized hydraulic fluid is fed to the closing connections the roof part moves towards the closed position. The opening connections are in communication with at least one common flow-distributing valve, which also has a first line connected to it, via which first line and said valve pressurized hydraulic fluid can be fed from the pump to the first and second actuators during an opening movement of the roof part and via which first line and valve hydraulic fluid can flow out of the opening chambers in the event of a closing movement of the roof part.

REFERENCES:
patent: 3481489 (1969-12-01), Stauffer
patent: 4337959 (1982-07-01), Bettin et al.
patent: 4452328 (1984-06-01), Oudelaar
patent: 6173737 (2001-01-01), Saucier
patent: 6189432 (2001-02-01), Colarelli et al.
patent: 6583525 (2003-06-01), Dyer et al.
patent: 6655723 (2003-12-01), Meijer et al.
patent: 6932403 (2005-08-01), Meijer et al.
patent: 2006/0021657 (2006-02-01), Cherfane et al.
patent: 1807911 (1969-07-01), None
patent: 4418776 (1994-12-01), None
patent: 10123790 (2002-12-01), None
patent: 0100589 (1984-02-01), None

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