Device for supporting and movably guiding a chair in a guide slot (13) provided in a housing (2), for example designed as slot guide, with a carriage (10) which can move in the guide slot (13) and supports a chair receptacle (7) of the chair, characterized in that the chair receptacle is associated with an electrically, mechanically or pneumatically activatable and deactivatable braking device (21) via which the chair receptacle (7) and the chair receptacle (7) of the chair in the guide slot (13) in an adjustable travel position is preserved , wherein the braking device (21) can be activated by weight loading of the chair and deactivated by weight reduction of the chair.
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