Abstract: A vertical curtain cutter includes at least a base and a mold cutting device fixed on the base, which consists of a clamper, a knife and a motor. The clamper has a stationary clamp block and a movable clamp block, and the stationary clamp block has a flat clamp surface at one side and a curved clamp surface at other side. As a result, the movable clamp block and the stationary clamp block can clamp between them the rolled curtain cloth or folded-up curtain cloth. The cloth is vertically inserted by reversing the flat surface and the curved surface of the stationary clamp block. The motor can drive the knife to shift towards the curtain cloth and cut it, so that the cutter is able to cut either rolled or folded-up curtain cloth into multiple curtain pieces.

Abstract: A window covering has a headrail, a plurality of lift cords extending from the headrail and a plurality of shade elements positioned sequentially below the headrail. Each shade element has two longitudinal edges which are substantially parallel to one another. A flap made of mesh fabric, a non-woven fabric or a film through which light may pass is attached to one or both longitudinal edges of the shade elements. The shade elements are positioned so that when the shade elements are in a closed position the lower edge of one shade element abuts the upper edge of an adjacent shade element and when the shade elements are in an open position, the lower edge of the at least one shade element is spaced apart from the upper edge of an adjacent shade element. The flap may or may not fully cover the gap between adjacent shade elements. A first cord is attached to one longitudinal edge of each shade element and a second cord is attached to the other longitudinal edge of each shade element.

Abstract: A window blind is constructed to include a headrail, a blind body suspended below the headrail, a linking mechanism mounted inside the headrail and having a power input device fastened pivotally with the headrail and an actuator rotatable with the power input device and connectable to the blind body, and a driving control mechanism. The driving control mechanism includes a suspension rod suspended from the headrail and a controller detachably coupled to the suspension rod for enabling the suspension rod to be driven by the controller to rotate the power input device and to further drive the actuator to move the blind body, causing the blind body to change the window shading status.

Abstract: A combination window covering is constructed to include a headrail, a bottom rail, front and rear ladder tapes respectively vertically connected between the headrail and the bottom rail at front and rear sides, fabric slats arranged in parallel between the headrail and the bottom rail, each slat having two opposite long sides respectively embedded with a rib, which is fastened to the front and rear ladder tapes, fabric light screening flaps respectively suspended from the slats and forming a light screening face at the front side of the slats, and a control unit for operation by the user to lift or lower the bottom rail so as to further receive or extend out the slats, and to move the front ladder tapes and rear ladder tapes of the ladder tapes vertically in reversed directions so as to further tilt the slats.

Abstract: A collapsing and securing device of a lateral blind includes a lateral blind such as a winding blind, a Roman blind, or a cloth blind, and a number of positioning members fixed at least on one surface of the window curtain, and the positioning members can temporarily adhere, stick or attract each other to secure the lateral blind at one of many collapsed position in case the lateral blind is manually wound up, without using pull ropes with a pool as used in a conventional lateral blind for preventing potential dangers involved in conventional lateral blinds. The collapsed lateral blind can be expanded down manually with easiness and quickness, with the temporarily adhered, stuck or attracted together positioning members separated from one another with easiness.

Abstract: A rotator, which is driven by an endless cord member to rotate, is used in a window blind for driving a roller of the window blind. The rotator includes a base having a shaft, a first clamping plate and a second clamping plate rotatably serially mounted on the shaft of the base for clamping the cord member therebetween, and an elastic biasing device provided between the base and one of the first and second clamping plates for urging the first and second clamping plates against each other.

Abstract: A fabric blind slat for a window blind includes a base fabric made from an opaque knitted fabric, two coil units respectively coupled to and extended along two opposite edges of the base fabric, and two supporting sleeves respectively enclosed inside the two coil units. The coil unit is knitted from a thread looped on a thread at the edge of the basic fabric. The supporting sleeve is a tubular member having two open ends for insertion of a rigid supporting member therein. The supporting sleeve is enclosed inside the coil unit at the time while the coil unit is formed by knitting.

Abstract: A cord member control device is mounted in a bottom rail of a Venetian blind to support a lift cord and a ladder tape of the Venetian blind. The cord member control device includes a pulley assembly holding a pair of wheels over which the lift cord passes, and a locating member extended from the pulley assembly and fastened to a mounting hole of the bottom rail to secure the pulley assembly to the bottom rail. The locating member has a recessed open chamber and a transverse through hole, which extends across the recessed open chamber for the passing of front and rear tapes of the ladder tape for enabling the front and rear tapes of the ladder tape to be fastened together in the recessed open chamber with a clip.

Abstract: A fabric window blind includes a head frame, a roller, an adjustment mechanism, slats, a bottom rail and a light-admitting shade. The roller is horizontally rotatably mounted inside the head frame. The adjustment mechanism has a control axle horizontally pivotally mounted inside the head frame below the roller, and two cord member sets having top ends connected to the control axle and bottom ends vertically downwardly suspended from the control axle. The slats are arranged at different elevations below the control axle. The slats each have two opposite lateral sides respectively joined to the cord member sets. The bottom rail is fastened to the bottom ends of the cord member sets below the slats. The shade has a first end fastened to the head frame, and a second end extended downwardly over the bottom rail and turned upwards toward the head frame and fastened to the roller.

Abstract: A method for cutting a window blind by using a cutting machine includes the step of (a) displaying data of the window blind on a display by reading a barcode provided at the window blind; (b) inputting the size of a window that is to be installed with the window blind and an installation mode of the window blind by selection, and then calculating and displaying on the display a size to be cut based on the data of the window blind and the size of the window and the installation mode selected; and (c) automatically controlling a positioning mechanism of the cutting machine to move to a predetermined position corresponding to the calculated size to be cut by a processor for stopping the window blind in a cutting position, and then controlling a cutting unit of the cutting machine to cut the window blind by the processor.

Abstract: A double-layer roller blind includes a first roller and a second roller horizontally arranged in parallel at the top side of a window, a first shade fastened with a top edge thereof to the first roller, a first bottom bar fastened to a bottom edge of the first shade, a second shade fastened with a top edge thereof to the second roller, and a second bottom bar fastened to a bottom edge of the second shade and suspended below the first bottom bar. The first bottom bar is provided with an insertion space through which the second shade is inserted such that the second shade is kept close to the first shade.

Abstract: A window blind includes a headrail, a bottom rail and a plurality of fabric slats arranged in parallel between the headrail and the bottom rail. Each fabric slat has two stiff support rods disposed at the two opposite long sides thereof. A plurality of ladder tapes are symmetrically connected between the headrail and the bottom rail and located respectively at the two opposite long sides of the fabric slats. Each ladder tape is formed of a plurality of strands by weaving and has a plurality of through holes in the netting structure thereof for the insertion of the support rods of the fabric slats so as to join the fabric slats to the ladder tapes between the headrail and the bottom rail at different elevations.

Abstract: An electromagnetic clutch-controlled electric blind is constructed to include a blind body formed of a headrail defining a receiving chamber, a set of slats, and a bottom rail, a power drive, the power drive including a reversible motor and electromagnetic clutch apparatus connectable to the motor, an amplitude modulation set coupled to the motor for rotation with the motor to lift/lower the slats to the desired elevation, a frequency modulation set coupled to the motor through the electromagnetic clutch apparatus and adapted for controlling tilting angle of the slats.

Abstract: A window blind cutting machine includes a machine base; two cutting units respectively disposed at two ends of the machine base, each cutting unit having a cutter movable along a respective cutting path across a longitudinal axis of the machine base for cutting off a part of the window blind carried on the machine base that protrudes over a respective reference line based on the cutting path, two measuring devices respectively disposed at an outer side of each cutting unit for measuring the part of the window blind that protrudes over the reference line, and two inner measuring rules arranged in parallel to the longitudinal axis and respectively extended in reversed directions from one cutting unit toward the other and having a respective true-zero disposed at the reference line, for measuring the length of the window blind from the reference line.

Abstract: A multipurpose blind cutting machine is constructed to include a machine base, a first cutter unit and a second cutter unit mounted on the machine base and stacked with each other. The first cutter unit has a circular cutting blade and a cutter drive adapted to rotate the blade and to move the blade in a direction substantially perpendicular to the feeding direction of a blank blind to be cut. The second cutter unit has a locating molds having a plurality of positioning through holes for the positioning of parts of the blank blind to be cut, a cutting-off tool, and a cutter drive adapted to move the cutting-off tool in a direction substantially perpendicular to the feeding direction of the blank blind. A control unit is adapted to selectively control the operation of the first cutter unit and the second cutter unit.

Abstract: A workpiece holding-down structure is used in a blind cutting machine and adapted to hold down a blind in a cutter unit of the blind cutting machine. The workpiece holding-down structure includes a workpiece feeder abutted against the cutter unit, and a clamp installed in the workpiece feeder. The clamp has a clamping bar unit fastened pivotally with a bottom wall of the workpiece feeder near one lateral side of the workpiece feeder and adapted to push a blind been put in the workpiece feeder toward the other lateral side of the workpiece feeder and to further hold down the blind for cutting.

Abstract: An anti-reverse transmission for use in a window blind includes a fixed axle, a rotatable input shaft, an output shaft sleeved onto the fixed axle, a transmission shaft sleeved onto the output shaft and coupled to a linking rod of a window blind, the transmission shaft having a protrusion inserted into an opening in the output shaft, and a spiral spring fitted on the fixed axle within the output shaft. The spiral spring has two end tips suspended in the opening such that the spiral spring is radially expanded to disengage the output shaft from the fixed axle for rotation with the transmission shaft and the input shaft upon rotation of the input shaft, and the spiral spring is radially compressed to stop the output shaft from rotation when the transmission shaft receives a biasing force from the gravity weight of a blind body of the window blind.

Abstract: A Venetian blind cutting machine is constructed to include a machine base, two blind locating modules mounted on the machine base at different elevations, each of which having a set of through holes for supporting component parts of a Venetian blind to be cut, a blind carriage adapted to carry the Venetian blind to be cut, a carriage for moving the blind carriage to the elevation of one of the blind locating modules for enabling the Venetian blind to be cut to be put in the selected blind locating module for cut, a cutter provided at the other side of the blind locating modules, and a cutter drive adapted to move the cutter across the imaginary axis passing through each of the through holes of the blind locating modules to cut the component parts of the loaded Venetian blind and then to return the cutter after cutting.

Abstract: A Venetian blind. The blind includes a horizontal headrail, two vertical side rails arranged in parallel at two sides below the headrail, and a horizontal bottom rail spaced below the headrail and vertically movable along the length of the side rails. Slats are, arranged in parallel between the headrail and the bottom rail. Two connecting cord members are longitudinally connected to the slats and each having two ends respectively connected to the headrail and the bottom rail. Two positioning mechanisms are provided between the side rails and the ends of the bottom rail and adapted to secure the ends of the bottom rail to the side rails at the desired elevation.

Abstract: A Venetian blind is constructed to include a headrail, a bottom rail, a plurality of slats, a blind supporting system suspendedly and spacedly supporting the slats horizontally between the headrail and the bottom rail, two lift cords each having a first end fastened to the bottom rail and a second end extending upwardly through the slats into the headrail and then downwardly through a gate of a lift lock mounted in the headrail and terminating in an operation segment suspended below the headrail at a distance, and a knot constructed in each lift cord and having a dimension greater than the gate of the lift lock. Therefore, the knot limits the moving distance of the respective lift cord relative to the lift lock and, prevents a sudden dropping of the bottom rail upon failure of the lift lock.