Abstract: A supplement blind enhancement for a window blind includes a plurality of enhancing blades positioned between every two adjacent slats of the window blind, a control system having a control slider, a blade controller extended from the control slider to slidably shift the control slider between a light shading position and a light enhancing position, and an elongated element extended from the control slider to engage with the enhancing blades. At the light shading position, the control slider is driven to slide the enhancing blades suspendedly disposed between the slats in an alternating manner for substantially blocking sunlight passing through a gap between each two slats, and at the light enhancing position, the control slider is driven to slide that each of the enhancing blades to overlap with the respective slat for allowing the sunlight passing through the gap between each two slats.

Abstract: A daylighting system comprising one or more light redirecting elements and a horizontal slat Venetian blind. The light redirecting elements are inserted between the slats of the Venetian blind and are supported between the slats and the outer strings of the Venetian blind. Each light redirecting element is a thin strip of reflective material formed into an angle section. The upper arm of the angle section reflects sunlight upwards through the Venetian blind and deeply into the interior of the building. The side arm of the angle section reflects sunlight back out of the window. The reflecting surface of an upper arm of a light redirecting element is treated to reflect light diffusely into a narrow angular range. The reflecting surface of a side arm of a light redirecting element is treated to reflect light diffusely into a wide angular range. The daylighting system is installed in the window of a building to redirect sunlight on to the ceiling of the building to improve natural illumination in the building.

Abstract: A blind includes a headrail, a bottomrail, a plurality of slats positioned between the headrail and the bottomrail, a plurality of ladders, a plurality of lift cords and a plurality of connectors. Each ladder is composed of two vertical portions and a plurality of rungs in parallel between the two vertical portions. The lift cords are positioned at two opposite sides of the slats and near the vertical portions of the ladders. Each slat has at least a hole near a longitudinal side edge, and a connector is deposited between the ladder and each slat. Then the connectors can combine the ladders and the lift cords with the slats in such a way that the slats can be kept from moving so as to shut off light effectively.

Abstract: A venetian blind device includes a head rail and a housing attached to a supporting wall, a shaft rotatably received in the head rail, a slat lift cord coupled to a number of slats for moving the slats toward or away from each other, a tilt adjustment cord coupled to the slats and the shaft for tilting an inclination of the slats relative to the head rail by rotating the shaft relative to the head rail. A follower is slidably received in the housing and coupled to the slat lift cord for moving the slats toward and away from each other when the follower is moved relative to the housing. The housing is solidly secured to the wall for preventing the children from being hurt by the housing and the follower inadvertently.

Abstract: In a first embodiment, a selective adjustment cord is provided as a very thin cord is extended through a series of thin engagement apertures which lie adjacent the main lift cord openings in a horizontal blind set. A series of engagement structures themselves cannot fit through the thin engagement apertures, and the selective adjustment cord is capable of movement of a louver having an engagement structure by only about the distance between adjacent louvers. In a second embodiment a slip fitting can be placed on specified louvers such that the first amount of upward travel of the lift cord will immediately lift the slats to which the slip fitting is engaged. Further movement of the lift cord will overcome the resistance of the slip fitting and allow the blinds to be lifted normally.

Abstract: A window covering includes an upper rail, a lower rail, a cover curtain, a first pull and a second pull cord assembly, and a brake assembly. The upper rail contains a pull cord control means cooperative with the first pull cord assembly to control movement of the cover curtain, a plurality of rollers and a movable plate on the bottom and an opening on one side. The second pull cord assembly has one end threading through the opening and other end winding on the rollers and threading through the bottom of the lower rail and fasten to the movable plate. The brake assembly is located in the opening to anchor the second pull cord assembly. After the cover curtain has been retracted or extended, the movable plate can be moved to a desired elevation through coupling relationship of the second pull cord assembly to facilitate adjusting of indoor lighting condition.

Abstract: A Venetian blind and a control mechanism therefore, comprising a plurality of slats suspended from a headrail by lift cords, the control mechanism comprising a hollow rod articulated to the headrail and accommodating the lift cords extending to a elevation assembly manipulable by an actuator slidingly received over the rod. Upward displacing of the actuator entails lowering of the slats and downwards displacing of the actuator entails raising of the slats, and a friction mechanism for arresting the slats at any respective elevation.

Abstract: A guide roller seat for a window covering includes a seat body, and a plurality of guide rollers rotatably mounted in the seat body to guide movement of a cord which is extended between an automatic winding mechanism and a covering body of the window covering. Thus, the cord is kept with a determined tension by the drawing action of the guide rollers, so that the cord is drawn by guidance of the guide rollers so as to fold or extend the covering body smoothly and evenly, thereby preventing the covering body from being tilted during the drawing action of the cord.

Abstract: A cord-operated window covering is provided with means for equalizing the individual lift cord lengths to maintain a horizontal and level bottom rail, while avoiding the choking danger to small children presented by exposed cord loops that can become entangled with the child. A break-away coupling of the exposed cord ends is provided in the form of a shear-loaded, separable joint that is strong when subjected to shear-type forces in normal use, but which is weak when loaded in peel or tension perpendicular to the joint, as would occur in a potentially dangerous child-entangled situation. The joint is formed by surface-modifying products applied to the opposed abutting surfaces of the individual cordlock members. Also disclosed is an embodiment that utilizes a continuous lift cord loop that is frictionally gripped by a gripper member secured to the shade.

Abstract: A motorized blind includes a headrail, a bottom rail, a drive shaft, an actuating device, and a power supply device. Thus, the battery of the power supply device is mounted in the bottom rail, so that the battery can be removed from the bottom rail easily and conveniently, thereby facilitating a user replacing or charging the battery of the power supply device when the electric power is not sufficient.

Abstract: A venetian blind includes a headrail, a storage rail, a covering unit and a retainer. The storage rail has front and rear sidewalls, each of which is formed with a horizontal rib. The storage rail further has two ends and an upper end opening disposed between the two ends. The retainer is configured as an inverted U-shaped plate, and bridges the front and rear sidewalls. The covering unit includes a plurality of horizontal slats. Lowermost ones of the slats are received within the storage rail, and are capable of being removed from the storage rail through the upper end opening. The retainer includes front and rear retaining-plate portions with open-ended slots engaging respectively the ribs of the storage rail, and is capable of being removed forcibly and upwardly from the storage rail.

Abstract: A window blind having overlapping slats for improved opacity includes first and second ladder strings, bridging strings, and louver strings that are attached to first and second slats. The louver strings have first ends that are attached near one end of a first adjacent bridging string. Second ends are attached near one end of a second adjacent bridging string. Each louver string forms a loop that encircles a first slat. The two string pieces that form the loop are joined to each other and the second ladder string at a second end, and are joined at an intermediate position of the louver string. The portion of the louver string extending between the intermediate position and the first end forms a hypotenuse of a right triangle when the loop lays flat with the adjacent bridging string.

Abstract: A child safety blind having a head rail, a bottom rail, at least one ladder tape, a plurality of slats, a tilt wand and a pair of registry clips. At least one ladder tape extends horizontally between the head rail and the bottom rail, and the ladder tape comprising a plurality of steps. The slats extend horizontally between the head rail and the bottom rail, and each of the slats extends through one corresponding step of the ladder tape. The tilt wand is linked with ladder tape and operative to operative to drive the steps of the ladder tape to turn the slats with an angle. The pair of registry clips is operative to lift the bottom rail and the slats at two side portions thereof while holding the bottom rail and the slats therein.

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 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 Venetian-style window blind (10) that resembles plantation style shutters is described. In a preferred embodiment, the headrail is shaped like the plurality of slats depending from it, is pivotally connected to the sides of a window frame by mounting brackets and has a hollow interior. Tilting of the plurality slats depending from the headrail is accomplished by vertically moving an actuator rod that is pivotally connected to the headrail. The plurality of slats are suspended from the headrail by a cord ladder to tilt in unison with the headrail. While tilting the blind assembly into the closed position, the headrail and depending slats also slide inwardly towards the windowpane. The slats are lifted through the actuation of a lift handle that is slidably attached to the actuator rod and contains therein a lock mechanism to hold the slats in a desired position.

Abstract: A window cover support device and method of use thereon, wherein the device is non-rotating and comprises a bracket having support members in the form of pairs of upward-facing hooks over which a valance rod or curtain rod may be placed, a box structure for confinement of one end of a miniblind support rod, and also a round or rectangular slotted opening for installation of one end of a shade support rod therein. The bracket is utilized in pairs with a tension rod between same to provide support to the selected window cover or combination of window covers. In furtherance of adhesion to the wall, the present invention incorporates a novel plug-flap device of rubber, or other similar material, suitable for insertion into the end of the tension rod, the plug-flap device providing a large surface area of rubber or similar material under the bracket.

Abstract: An apparatus for opening and closing window blinds converts rotary motion about a vertical axis of a vertical rod into rotary motion about a horizontal axis of a horizontal member. A lever is attached to one end of the horizontal member. A drive gear is attached to an opposite end of the horizontal member. A driven gear is attached to a first end of a vertical member. The driven gear is operatively engaged with the drive gear. The vertical member is perpendicular with respect to the horizontal member. An adapter housing is attached to an opposite end of the driven gear and is used to attach a bottom end of the vertical rod thereto. All component parts are supported by a base member that is attached to a wall. Turning the lever rotates the drive gear which rotates the vertical rod and, accordingly, opens or closes the blinds.

Abstract: A child safety blind having a head rail, a bottom rail, at least one ladder tape, a plurality of slats, a tilt wand and a pair of registry clips. At least one ladder tape extends horizontally between the head rail and the bottom rail, and the ladder tape comprising a plurality of steps. The slats extend horizontally between the head rail and the bottom rail, and each of the slats extends through one corresponding step of the ladder tape. The tilt wand is linked with ladder tape and operative to operative to drive the steps of the ladder tape to turn the slats with an angle. The pair of registry clips is operative to lift the bottom rail and the slats at two side portions thereof while holding the bottom rail and the slats therein.

Abstract: A pleated shade assembly capable of height adjustment without use of pull cords, comprising an upper elongated support; a lower elongated member that is manually adjustable up and down; primary lines extending through shade pleats to suspend the bottom elongated member; primary rotors at the top elongated support to entrain the primary lines; at least one secondary line having operative connection to the primary lines; and apparatus acting on the secondary line or lines for counterbalancing suspension force exerted on the primary lines at different shade height adjusted levels.

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.

Abstract: An antibandit shutter includes a closed frame made up of a lower housing, an upper head and two side mullions defining a space which can be opened or closed. The opening or closing is effected by a plurality of elongate slats adapted to move from a retracted position within the confines of the lower housing to an expanded and raised position substantially closing off the space. The slats are guided along the mullions of the frame by a raising mechanism formed from a plurality of crossed first and second lever arms in the form of a lazy tongs mechanism, where the first lever arms are formed by the edges of the slats and the second lever arms are formed from slave levers.

Abstract: A Venetian blind structure includes an upper and lower beams made up of telescopically adjustable upper and lower inner/outer brackets respectively wherein a plurality of pull cord and retaining cord mounts are equidistantly adapted at the upper inner/outer brackets therein for a pair of mutually engaged internal and external rods to be mounted thereon, and the internal and external rods thereof have a plurality of adjustment blocks sequentially joined thereto for holding both ends of U-shaped retaining cords thereby. The mutually engaged lower inner/outer brackets are located at the bottommost side of the retaining cords therein, and plural pairs of mutually abutted upper inner and lower outer blind slats are located at retaining holes defined by upper/lower clamping sections distributed equidistantly from top to bottom of the retaining cords thereof.

Abstract: A cord stopper for use in slidably and detachably connecting a lift cord of a window blind assembly includes a first cover shell having an insertion hole for insertion of the lift cord, a second cover shell openably closed to the first cover shell to form a receiving chamber therebetween, and a plurality of holding down members disposed in the receiving chamber for pressing the lift cord that is inserted through the insertion hole of the first cover shell to hold the cord stopper on the lift cord.

Abstract: A modular shutter blind system for a window blind application. A window blind is made to look like a window shutter by having airfoil shaped slats which traverse in toward the window when the blind is tilted closed and traverse away from the window and toward the room when the blind is tilted open in order to give the blind the clearance needed to tilt open while making it appear as if the window frame is the shutter blind frame. This traverse motion of the slats is accomplished by having the tilting axis along the centroid of the head rail move in and out while the blind is tilted closed or open respectively.

Abstract: FIG.

Abstract: The invention includes an unbalanced horizontal blind with a spring means to provide a lifting or retraction force for the slats of the blinds. A brake means prevents undesired movement of the slats that would otherwise result from the continuous retraction force of the spring means when the slats are set in a desired position. Controls for the release of the brake means and tilting are also provided in an embodiment of a blind of the invention. An embodiment of the invention permits the blind to be operated by a single wand that can be used to either raise the slats or tilt the slats. This eliminates the need for a loose cord or bead chain that would traditionally be used as the user interface for controlling the movement of the slats of the blind.

Abstract: A window blind includes a hollow horizontal headrail, a slat unit, a hollow bottom rail, and a pair of pull ropes. The slat unit includes parallel slats disposed under and parallel to the headrail. Each slat has two spaced apart holes. The bottom rail is disposed under and parallel to the slats. Each pull rope has a vertical section which passes through one of the holes in each of the slats, a turning section which extends below the vertical section within the bottom rail and which is inclined from the vertical section, a mounting section which extends inclinedly from the turning section, which extends out from the bottom rail and which is to be fixed to a wall below the bottom rail, and a pulling section which extends above the vertical section and which is suspended from the headrail.

Abstract: A window blind includes a housing, slats, and a bottom rail. A shaft is journalled in the housing. A pair of pull ropes extends through the housing and the slats, and connects the shaft to the bottom rail. A drive cord is coupled to the shaft. An operating device includes a pulling unit, a braking unit, and a positioning unit. The pulling unit permits extension of the drive cord therethrough, has the drive cord secured thereto, and is operable so as to rotate the shaft for raising the bottom rail. The braking unit provides a braking force that is transmitted to the shaft so as to retain the bottom rail at a desired vertical distance relative to the housing. The positioning unit permits extension of the drive cord therethrough and is operable so as to release the braking force for lowering the bottom rail.

Abstract: A window covering including a head rail, a bottom rail, and a window covering material located between the head rail and the bottom rail. The bottom rail being connected to the head rail by two lift cords and configured to move in a first direction and a second direction. The blind also includes a variable friction device having a bearing surface configured to provide a first friction force that opposes movement of the two lift cords when the bottom rail is moved in the first direction, and a second friction force that opposes movement of the two lift cords wherein the bottom rail is moved in the second direction. The first friction force is different than the second friction force.

Abstract: A cord lock desirably for a window blind assembly adapted to be releasably locked to a cord, such as a vertical cord of the window blind assembly, at alternate locations along the length of the cord. The cord lock desirably includes a first member and a second member that are hingedly connected together in any suitable manner for opening and closing the cord lock. The cord lock defines a channel for receiving the cord and includes structure for engaging the cord within the channel to releasably lock the cord lock to the cord when the cord lock is in a closed position. The channel may be elongated and defined by the second member, and the cord engaging structure may be integral or otherwise associated with the first member. The cord may be received within the channel when the cord lock is in a closed position to lock the cord lock to the cord and desirably also to substantially enclose the channel so as to define a passage with two open ends.

Abstract: A Venetian blind is constructed to include a headrail, a bottom rail, a set of slats, at least one lift cord, each lift cord having a first end fixedly fastened to the bottom rail and a second end upwardly inserted through the slats into the inside of the headrail and extended transversely to one end of the headrail and then turned downwards to the outside of the headrail, and a sleeve suspended from the headrail and adapted for receiving the second end of each lift cord for enabling the second end of each lift cord to be selectively positioned in one of a series of vertical positions in the sleeve.

Abstract: A window covering system comprises a plurality of slats located between a head rail and a bottom rail. The bottom rail is connected to the head rail by a pair of lifting cords extending through the slats. A first spring motor and storage device is located in one of the head rail and the bottom rail. The first spring motor and storage device includes at least one extension spring having a first end that is fixedly secured in the head rail or bottom rail and a second end that is free to move within the head rail or bottom rail. At least one of the lifting cords is looped around the free end of at least one of the extension springs so that movement of the bottom rail in a vertical direction causes a corresponding movement in the second end of the extension spring in a direction along the longitudinal axis of the head rail or bottom rail. A method for balancing a window covering system using a pair of extension springs is also disclosed.

Abstract: A level adjuster for window shades facilitates the level adjustment of the lower rail, in a single operation without requiring any disassembly of the installation. The adjuster comprises a clip or clamp installed in one end of a conventional hollow rail. The adjuster clip has a pair of arms and a tongue or shoe extending into the rail interior, bearing against a crossmember extending between the two arms. The draw cord or lifting line extends as a continuous length through one rail, down each side of the shade assembly, and through the opposite rail where it wraps around the adjuster crossmember and is gripped by the gripping shoe. Lower rail adjustment is accomplished by inserting a tool (nail, etc.) through a hole in the end of the adjuster to flex the resilient shoe away from the crossmember, thereby freeing the lifting line gripped between the shoe and crossmember.

Abstract: A force reducing device and method for adjusting shutter ropes is provided wherein winding boxes are divided into two sets. Two winding box winding box sets are symmetrically disposed with respect to a center of the upper beam, and each winding box set is fixed with a rope. The two ropes pass through respective holes in the slats, and then wind through a first pulley on the lower beam, and then extend and wind through a second pulley. The two ropes pass upwardly through the respective hole in the slats. Then, the two ropes pass through the outlets of the balance strip and are combined as a first combined rope. The first combined rope passes through an opening of the rope retaining seat to be combined with opposing ends of another rope.

Abstract: A telescoping wand safely encloses the control ends of a set of lift cords of vertically raisable “blinds” (as defined in the specification). The wand includes a selectively releasable cord locking mechanism which cooperates with a lift cord tensioner and a cord locking mechanism in the blinds' headrail to allow a user to raise and lower the blinds by one-handed operation of the wand. The blinds are raised by reciprocatingly moving an outer handle tube telescopically along a stationary inner tube. Each time the handle is pumped up and down, the blinds are raised a discrete amount. The wand's cord locking mechanism allows the lift cords to slip through the wand on the handle's upward stroke, but grabs and pulls the lift cords on the handle's downward stroke. Two or three quick pumps of the handle are all that is typically needed to fully raise a set of blinds.

Abstract: An adjustable window blind cord stopper includes a locking guider slidably connected on a lift cord of the window blind assembly by constructing an adjustable knot at a guiding through slot of the locking guider. In which, in an unlocked position that the adjustable knot is normally loosen with respect to the locking guider, the cord stopper is adapted for sliding along the cord in such a manner that when the adjustable knot is positioned above the guiding through slot, the cord stopper is adapted to slide downwardly along the lift cord, and when the adjustable knot is positioned below the guiding through slot, the cord stopper is adapted to slide upwardly along the lift cord. Thereby, the folding or unfolding condition of the slats of the window blind assembly can be locked up by sliding the cord stopper between an upper position and a lower position.

Abstract: A window blind having a plurality of substantially identical mounting blocks that are adapted to receive a mounting rod in an aperture formed in each of the mounting blocks wherein the mounting rod is comprised of a plurality of mounting rod sections that can be connected together by sleeves so as to form a mounting rod of a variety of lengths. At one end of the mounting rod, a tilt actuator block is attached. The tilt actuator block has a gearing mechanism such that user manipulation of a pair of cords will result in rotation of the mounting rod. The plurality of slats are attached to the mounting section. The mounting blocks further include a guide plate that receives the lift cord wherein the guide plate has an aperture that allows the lift cord to be extended vertically downward from the mounting section to be connected to the horizontal slats.

Abstract: A window treatment holding system having an elongated pocket member defining a pocket profile, or structure, in which a bracket is received in a snap-fit arrangement. The system is capable of generally concealing the mechanical portion of a window treatment and includes the bracket being designed to carry the head rail of a conventional horizontal or vertical blind, or a drapery rod or channel. The pocket member can be of a variety of configurations and can be fastened over a window, in the ceiling, fastened to the wall or window frame adjacent the window, or incorporated into the window mullion head. Various pocket profiles are provided, some designed to be concealed from view, and others having decorative external portions for providing an aesthetically appealing appearance. The pocket member could be molded or extruded as a part of a window frame or the window mullion head. Also, the pocket profile can be created using a pocket adapter and snapped into place in a conventional mullion cavity.

Abstract: Operating structure for vertically collecting/shutting a blind, including several fixing bodies arranged in an upper beam. A slat-controlling seat is pivotally disposed on a center of top section of each fixing body. The slat-controlling seat via a shaft rod and an actuating body is connected with a rotary controlling rod disposed on outer side of the upper beam. A ladder cord is fixed on the slat-controlling seat. Multiple restricting cords are positioned between lateral main cords of the ladder cord at equal intervals for the slats to pass therethrough. The end section of the main cord is fixed on a base seat under the slats. An adjustment section is disposed on one side of front edge of the upper beam. Several pulling cords are disposed on the adjustment section. One end of each pulling cord is conducted along the interior of the upper beam to the slat-controlling seat. The pulling cords are back and forth interlacedly outward passed through the through holes of the upper beam.

Abstract: A Venetian, horizontal or mini-blind that incorporates a decorative edge treatment for the interior-facing long edge of the blind's slats. The exterior-facing long edge of the blind's slat remains straight, such that the exterior appearance is unchanged.

Abstract: A coil spring drive unit for window covers is disclosed, which comprises a coil spring drive and the combination whose elements are selected from (1) a band shift transmission which provides varying ratio power transfer as the cover is opened and closed; (2) gear means comprising various gear sets which provide frictional holding force and fixed power transfer ratios; and (3) a gear transmission which provides fixed ratio power transfer as the cover is opened or closed. The combination permits the coil spring drive torque to be tailored to the weight characteristics of the window cover such as a horizontal slat or pleated or box blind as the blind is opened and closed, and permits the length of the blind and the distance between the open and closed positions of the blind to be altered for a given rotational distance of the coil spring.

Abstract: An improved venetian type blind has slats having a pair of slots disposed on an outside edge or inside edge of the slats. The slots in each pair are laterally spaced apart. A first ladder having opposite cord type rails and rungs extends therebetween, is positioned with the rails outside of the slots and is connected to the bottomrail. One rail of each ladder is adjacent to a lift cord running through slots in the inside edge or outside edge of the slats.

Abstract: A venetian type blind has a headrail that can be cut down along cut lines very close to the outermost ladder locations. The cradle and spool in the headrail are sized and configured so that the cord lock and tilter can be positioned between a cradle and one side of the headrail.

Abstract: A Venetian blind having a head rail with a plurality of ladder cords and vertical cords vertically mounted and spaced apart therebelow, a plurality of slats being positioned between the ladder cords and the vertical cords formed a shade, the bottom of the head rail being a lower rail, characterized in that the external edge of the head rail is mounted with an upper rail formed from plastic injection molding for enabling cutting the length thereof, the cross-section of the upper rail is substantially “U” shaped and the edges of the upper rail are individually provided with two hook-like edges, and a plurality of holes are provided on the upper rail for the insertion of the ladder cords, the vertical cords, and a lift cord, to thereby provide support for a venetian blind within various sized structural openings.

Abstract: A Venetian blind has a plurality of slats which can be set together at any angle or be drawn up together with a plurality of cords. The slats are made of a material conductive to electricity and are provided on two longitudinal side edges thereof with an insulation strip for preventing an electrical shock. The slats are connected at both longitudinal ends thereof with a power source. When the slats are drawn down, the slats are electrically charged so as to electrocute an intruding insect. When the slats are drawn up together, the power supply to the slats is interrupted.

Abstract: The present invention relates to a slat-actuating and positioning device for venetian blinds having a plurality of restriction cords provided in between two main cords to position the blind slats of the venetian blinds. A recessed positioning slot is provided on the blind slat corresponding to the main cords such that an actuating and positioning structure formed from the blinds and the main cords. A plurality of lugs are provided at intervals along the main cord for the passage of a suspension cord to the base seat below the blind slats. The structure of the present invention provides excellent stability in actuating the blind slats and improves the longevity of the venetian blinds.

Abstract: A Venetian blind is formed by a plurality of parallel elongate slats disposed in parallel spaced relation between a headrail and a bottom rail. Ladder cords secured between the headrail and bottom rail include riser cords and spaced apart cross rung cords for supporting the slats in transversely spaced apart relation. Lift cords depend from the headrail and are secured to the bottom rail for lifting the bottom rail and slats into closely spaced stacked relation and for lowering the slats into wider spaced relation. Each lift cord is interwoven with one of the ladders adjacent a longitudinal edge of the slats, and may be intertwined with a riser cord thereof. Notches are provided in one edge of the slats.

Abstract: A blind system for regulating light entering a window frame of a window. The blind system includes a support bar affixed to an interior top portion of the window frame, a plurality of prism shaped slat members connected to and extending from the support bar and a device for selectively pivoting the slat members to both change an angle at which the light passes through the slat members and change an amount of light permitted to enter the room through the slat members. The slat members are able to refract light passing through the window and thereby redirect light passing therethrough. The slat members are connected to extend either vertically or horizontally from the support bar. A device for adjusting a height of the slat members above a bottom side of the window frame is provided when the slat members extend horizontally. The slat members are also able to pivot within a 180° range of rotation.