A covering for an architectural opening has a dual cord operating system. The covering may include a head rail, blind panels depending from the head rail, and an operating system. The operating system may include a housing connected to the head rail, a first drive assembly rotatably mounted within the housing and operable to move the blind panels between an extended configuration and a retracted configuration, and a second drive assembly rotatably mounted within the housing and operable to move the blind panels between a closed configuration and an open configuration.

An actuator for motor vehicle applications, in particular a motor vehicle door actuator, includes a manually or electromotiveiy operating drive. Furthermore, a flexible drive means which is connected to the drive and can be acted upon by the latter is realized. Additionally provided is an actuating member driven by the drive means. According to the invention, the drive means is produced predominantly from plastic.

A window operating system moves a window sash between an open position and a closed position. A window has a top member operatively connected to a bottom member by a first side member and a second side member to form a frame. The sash is mounted to the frame for relative movement between the open and closed positions. The window operating system comprises an operator and an elongate member. The operator has a rotating member, and the elongate member provides rotational movement to the rotating member of the operator and movement of the elongate member rotates the rotating member thereby opening and closing the sash.

A window operating system moves a window sash between an open position and a closed position. A window has a top member operatively connected to a bottom member by a first side member and a second side member to form a frame. The sash is mounted to the frame for relative movement between the open and closed positions. The window operating system comprises an operator and an elongate member. The operator has a rotating member, and the elongate member provides rotational movement to the rotating member of the operator and movement of the elongate member rotates the rotating member thereby opening and closing the sash.

A door braking system includes: a shaft; a brake pad configured to be mounted to the shaft; a plate for mounting on the shaft adjacent to the brake pad; a spring for urging the plate to the brake pad, the spring configured to be mounted on the shaft; a nut dimensioned and sized to be mounted on the shaft for adjusting an amount of force the spring urges the plate against the brake pad. A method of applying variable amount of braking force to a door includes: attaching a brake pad and brake plate to a shaft; configuring a spring to urge the brake plate against the brake pad; mounting an adjustment piece to the shaft; and configuring the adjustment piece to move axially on the shaft as the shaft rotates to thereby vary a force the spring urges against the brake plate.

A door braking system includes: a shaft; a brake pad configured to be mounted to the shaft; a plate for mounting on the shaft adjacent to the brake pad; a spring for urging the plate to the brake pad, the spring configured to be mounted on the shaft; a nut dimensioned and sized to be mounted on the shaft for adjusting an amount of force the spring urges the plate against the brake pad. A method of applying variable amount of braking force to a door includes: attaching a brake pad and brake plate to a shaft; configuring a spring to urge the brake plate against the brake pad; mounting an adjustment piece to the shaft; and configuring the adjustment piece to move axially on the shaft as the shaft rotates to thereby vary a force the spring urges against the brake plate.

An adjustable door braking system includes a shaft, a brake pad configured to be mounted to the shaft, a plate for mounting on the shaft adjacent to the brake pad, a spring for urging the plate to the brake pad, an adjustment piece, and a seat. The spring is configured to be mounted on the shaft. The adjustment piece is dimensioned and sized to be mounted on the shaft for adjusting an amount of force the spring urges the plate against the brake pad. The seat allows the adjustment piece to move axially along the shaft and limit the adjustment piece from rotating with the shaft. The seat is movable between an engaged position where it contacts the adjustment piece to prevent rotation of the adjustment piece and a disengaged position where it does not contact the adjustment piece.

An adjustable door braking system includes a shaft, a brake pad configured to be mounted to the shaft, a plate for mounting on the shaft adjacent to the brake pad, a spring for urging the plate to the brake pad, an adjustment piece, and a seat. The spring is configured to be mounted on the shaft. The adjustment piece is dimensioned and sized to be mounted on the shaft for adjusting an amount of force the spring urges the plate against the brake pad. The seat allows the adjustment piece to move axially along the shaft and limit the adjustment piece from rotating with the shaft. The seat is movable between an engaged position where it contacts the adjustment piece to prevent rotation of the adjustment piece and a disengaged position where it does not contact the adjustment piece.

A skylight or roof hatch that is manually opened and closed. The skylight is formed of a window mounted to a casing frame by way of one or more hinges, which allows the window to open and close. One or more gas springs mounted between the window and casing frame are configured to exert force against the inside of the window. The gas springs are used to urge the window into an open position. Once in the open position, the window is closed by overcoming the biasing force exerted by the gas springs. This is achieved by winding in a cable that is connected to the window. A single pulley wheel that is mechanically linked to other mechanical elements is utilized to spool in the cable connected to the window in order to close the window and to unlock a reel lock to allow for automatic opening of the window.

A skylight or roof hatch that is manually opened and closed. The skylight is formed of a window mounted to a casing frame by way of one or more hinges, which allows the window to open and close. One or more gas springs mounted between the window and casing frame are configured to exert force against the inside of the window. The gas springs are used to urge the window into an open position. Once in the open position, the window is closed by overcoming the biasing force exerted by the gas springs. This is achieved by winding in a cable that is connected to the window. A single pulley wheel that is mechanically linked to other mechanical elements is utilized to spool in the cable connected to the window in order to close the window and to unlock a reel lock to allow for automatic opening of the window.