Abstract: A louver arrangement for a vehicle sun roof designed to limit sun into the vehicle and to limit the vibration of the louvers. The louver arrangement has two or more louvers that are guided between parallel guide profiles. At least one louver has a deviating longitudinal radius of curvature such that when the louver is in the closed position at least one portion of the louver is fastened to a component perpendicular to the plane of the sun roof opening.

Abstract: An adjustment apparatus for a sunroof includes a cover support element (19), a guide element (13a, 13b), a carriage element (3), and means of control (4 through 7) for the adjustment of the cover piece. The cover support element (19), with the cover piece (8) can be tilted around a first cam (7a) and displaced. The means of control join the cover piece with the carriage element in a manner relative to each other such that they can be displaced along the aforementioned longitudinal direction.

Abstract: A piezoelectric drive to provide a rotary force to a rotating element includes a pair of circumferentially spaced fingers. The fingers are selectively moved towards and away from the rotating element with piezoelectric actuators that expand and contract. An intermediate piezoelectric actuator moves the two fingers away from each other or allows them to be moved towards each other. A bias force acts in opposition to the intermediate piezoelectric actuator. By controlling the three piezoelectric actuators, the system rotates the rotating element. The system is preferably utilized for driving a vehicle component, and most preferably, a window for a vehicle. The inventive motor provides a low cost compact motor for driving vehicle components.

Abstract: A piezoelectric moving linear motor consists of three piezoelectric actuators which are controlled relative to each other. One piezoelectric actuators causes two blocks to move away from each other in opposition to a spring force. The other two piezoelectric actuators selectively clamp a block to a guide shaft. By cyclically controlling the actuation of the three piezoelectric actuators, the motor is able to move the blocks axially along the guide shaft. Preferably, a vehicle component such as a window is fixed to one block and is caused to move along the guide shaft.