In a vehicle seat, particularly a motor vehicle seat, having a height adjuster (25) for setting the height of a seat frame (10) of the vehicle seat (1) relative to an understructure (3) connected with the vehicle structure, a substantially irreversible change in the geometry of the height adjuster (25) in the event of a crash activates at least one crash locking device (27, 30), allowing an alternative force transfer between the seat frame (10) and the understructure (3).
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