Patent ID: 8757238

Claim:
A method of controlling a movable partition, the method comprising: coupling at least one roller assembly to a portion of a movable partition suspended from an overhead track and including a plurality of hingedly coupled panels and positioning at least one roller element of the at least one roller assembly in contact with a surface of an adjacent structure which the at least one partition will traverse, the surface of the adjacent structure including at least one substantially nonplanar surface feature; displacing the movable partition in a first direction along a path adjacent the surface of the adjacent structure; and maintaining contact between the at least one roller element and the surface of the adjacent structure with a linear actuator coupled to the at least one roller assembly at a predefined magnitude of force by altering an elevation of the at least one roller element with the linear actuator relative to the movable partition while the at least one roller element traverses the at least one substantially nonplanar surface feature.