Patent ID: 8360130

Claim:
A window treatment system attached to a stationary member, said system comprising: a window covering adapted for mounting on the stationary member; a control cord selectively operating said window covering and including a lower section with two parallel portions defining a plane and being connected by an intermediate portion; and a tensioning device selectively applying a tension on said cord, when attached to the stationary member, said tensioning device including a cord receiving member with said intermediate portion being in contact with said cord receiving member and a disabling mechanism defining with said cord receiving member a first configuration in which said cord is prevented from moving with respect to said tensioning device when said tensioning device is detached from the stationary member; said disabling mechanism and said cord receiving member defining a second configuration when said tensioning device is attached to said stationary member, in which second configuration said control cord is allowed to move with respect to said tensioning device when said tensioning device is attached to the stationary member, said disabling mechanism moving substantially perpendicularly with respect to said plane between said first and second configurations; wherein said intermediate portion being trained around the cord receiving member, and wherein said disabling mechanism is a drive stud moving perpendicularly with respect to said parallel portions between said two configurations; wherein said drive stud forms an axis of rotation for said cord receiving member in said second configuration.