Motorized curtain driving device

Abstract

A device for opening and closing a curtain on a rod or rail includes a driven wheel coupled to a motor within a housing. The driven wheel protrudes from the housing in frictional engagement with the rod or rail. The device further includes a suspension assembly including a support member and one or more linkages. The support member is in sliding or rolling contact with the rod or rail. The linkages extend along an independent suspension axis and connect the support member to the housing to suspend the housing from the support member, allowing the device to traverse bumps in the rod or rail. The driven wheel is rotated by the motor to advance the device along the rod or rail for opening and closing the curtain. A curtain opening system may further include one or more sensor targets disposed on the rod or rail, and an encoder and a sensor operatively connected to a controller of the device for auto-calibration of position tracking.

Dependencies are inferred from the claim text.