A spring counterbalance apparatus and method consists of a shade system with a torque profile, where the shade system is connected with a drive shaft. A first spring system is connected with the drive shaft where the first spring system is a standard wound spring system. A second spring system is connected with the drive shaft where the second spring system is a reverse wound spring system and where, in combination, the first spring system and the second spring system produce a counterbalance torque profile approximately equal to the shade system torque profile.

An extendable and retractable cellular shade may include a plurality of vertically aligned shade cells and one or more divider webs extending within each shade cells to as to divide the shade cell into two or more cell structures. By adjusting one or more design parameters associated with the cellular shade, the configuration of the shade cells, such as the size and/or shape of the cell structures, and/or the illumination or lighting effects associated with the cellular shade may be specifically tailored to provide a desired aesthetic look or feel for the shade.

A covering for architectural openings includes a cord drive with a pulley that is supported by a bearing surface which lies in the plane of the cord.

An electric curtain and a curtain retraction device including a toothed chain; an outer housing; a drive motor, the toothed chain extends into the outer housing; a reducer, a power output end of the drive motor is inserted into the reducer, so as to be connected with the reducer in a transmission way, the reducer has a first power output part; a power output module including a power output shaft, a clutch component and a driving gear, the power output shaft is inserted into the first power output part, so as to be connected with the reducer in a transmission way, the clutch component is arranged between the power output shaft and the driving gear, the driving gear is configured to move the toothed chain. The drive motor, the reducer and the power output module are all coaxially installed inside the outer housing.

An electric curtain and a curtain retraction device including a toothed chain; an outer housing; a drive motor, the toothed chain extends into the outer housing; a reducer, a power output end of the drive motor is inserted into the reducer, so as to be connected with the reducer in a transmission way, the reducer has a first power output part; a power output module including a power output shaft, a clutch component and a driving gear, the power output shaft is inserted into the first power output part, so as to be connected with the reducer in a transmission way, the clutch component is arranged between the power output shaft and the driving gear, the driving gear is configured to move the toothed chain. The drive motor, the reducer and the power output module are all coaxially installed inside the outer housing.

A covering for an architectural opening including a support tube and a panel operably connected to the support tube and configured to be wound around the support tube. The panel includes a support sheet and at least one cell operably connected to the support sheet. The at least one cell includes a vane material operably connected to a first side of the support sheet and a cell support member operably connected to the vane material and configured to support the vane material at a distance away from the support sheet when the panel is in an extended position with respect to the support tube.