Patent ID: 8376022

Claim:
A window covering comprising: a mounting device; window covering material connected to the mounting device such that the window covering material is moveable from an extended position to a retracted position; a drive mechanism connected to the mounting device, the drive mechanism being actuatable to drive movement of the window covering material, the drive mechanism comprising a loop cord connected to a drive device such that rotation of the loop cord actuates the drive device to drive movement of the window covering material; a tension device connected to the loop cord, the tension device comprising: a housing, a spring member connected to the housing; a loop cord retention member connected to the housing, the loop cord retention member having a channel sized and configured to receive a portion of the loop cord, and a locking body connected to the spring member, the locking body moveable from a locked position to an unlocked position, the portion of the loop cord received within the channel of the loop cord retention member not being rotatable to drive movement of the window covering when the locking body is in the locked position and the portion of the loop cord received within the channel of the loop cord retention member being rotatable to drive movement of the window covering when the locking body is in the unlocked position, and a fastener member passing through the spring member and the housing for attachment to a structure such that one of (a) the locking body is maintainable in the unlocked position after the locking body is moved to the unlocked position and (b) the locking body is moveable from the locked position to the unlocked position via movement of the housing after the fastener member is attached to the structure.