Importance

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Abstract

Kit-of-parts comprising: —an outer post and an inner post with an external screw thread, that are rotationally locked and extendable relative to each other; —a nut configured to be driven along the external screw thread to selectively secure the inner post relative to the outer post in a drive mode; and—a drive, comprising a drive housing accommodating a drive motor, and a connector configured to connect the drive housing with the nut and thereby connect the drive motor with a transmission; —wherein the nut comprises: —a housing; —a rotatable member that is rotatably arranged in the housing, wherein said rotatable member comprises an internal screw thread that is configured to form a mating engagement with the external screw thread; —the transmission arranged in the housing and comprising an input shaft that is connectable to the drive, wherein said transmission is configured to selectively: —rotate the rotatable member relative to the housing in the drive mode; and—form a coupling between the housing and the rotatable member in a manual mode wherein the nut is further configured to be moved manually along the external screw thread, the coupling causing the rotatable member and the housing to jointly rotate relative to the external screw thread, thereby moving the nut in the longitudinal direction along the external screw thread.

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First Claim