Bistable magnet
AssigneeAvl AG
InventorErich Kleinhappl
Life of this patent
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Abstract
Bistable magnet, in particular for the actuation of valves and the like, with a movable piston that has a pole face and that is held by a permanent magnet in one of its two stable positions, wherein this piston has a stop face that is provided with a damping plate and that with an opposing face that is built stationary into the housing defines an end position of the piston. To avoid switching noises without decreasing the holding forces it is provided that, in addition to the stop face on the piston, a pole face is provided that interacts with a stationary pole face and that a device that guides the magnetic flux and bridges the air gap between these pole faces is provided between these pole faces.
Claims15
Bistable magnet comprising a housing and a movable piston with a pole face interacting with stationary pole face fixed in said housing, wherein said movable piston is held by a permanent magnet in one of two stable positions, an engaged position and a disengaged position, said piston having a stop face being provided with a damping plate adjacent to an opposing face which is built stationary into said housing defining an end position of said piston, and wherein a device that guides a magnetic flux and bridges an air gap between said pole faces is provided between said pole faces.
Dependencies are inferred from the claim text.