Drive device
AssigneeZF Friedrichshafen AG
InventorsGerhard Buck, Helmut Eymuller, Siegfried Stutzle
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Abstract
A drive device comprises a first switchgear (9) and a second switchgear (11) which can be actuated respectively hydraulic pressure in an opening direction and via spring force in a closing direction, and which are provided with a device (26) by which the first switchgear (9) and the second switchgear (11) are to be actuated in the opening direction when the switchgears are actuated in the closing direction.
Claims9
Drive device having at least one first switchgear (9) and one second switchgear (11) in which each clutch is actuatable by spring force in closing direction and by hydraulic pressure in opening direction, wherein during simultaneous actuation in closing direction of said first switchgear (9) and second switchgear (11) an output (7) is non-turnably kept in manner of a parking brake with a device (26) for simultaneous opening of said first switchgear (9) and of said second switchgear (11), characterized in that for simultaneous opening of said first switchgear (9) and of said second switchgear (11), said device (26) has a pressurizable piston (25) which in pressurized state, when the clutches are simultaneously actuated in closing direction, actuates them in opening direction.
Dependencies are inferred from the claim text.