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Telescopic column that can be calibrated, piece of furniture having a telescopic column that can be calibrated, and method for calibrating a telescopic column

  • US 9,814,306 B2
  • Filed: 04/11/2012
  • Issued: 11/14/2017
  • Est. Priority Date: 04/15/2011
  • Status: Active Grant
First Claim
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1. An adjustable-length column that can be calibrated, wherein the column that can be calibrated comprises telescopic parts including a stationary part and at least one movable part, a driving mechanism having a motor arranged in the telescopic parts and connected to a spindle having an ascending screw thread that causes an adjustment of the length of the column between a retracted state and a completely extended state, a controller for controlling the driving mechanism, a middle part interacting with the screw thread, the position of the middle part relative to the screw thread varying as the length of the column is adjusted between the extended and retracted states, and a calibrating means including a sensor unit having a detection means being in direct effective contact with the middle part when passing the sensor unit, the calibrating means establishing the attainment of a pre-defined calibration position of the movable part with respect to the stationary part, wherein the controller is configured to set a fixed reference point for the length-adjustment at the pre-defined calibration position, and the movable part can be transferred from the retracted state to a plurality of extended states, and wherein the calibration position coincides with a position of the movable part in a partly extended state.

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