A tensioner for a fenestration unit operator includes a base and a guide including a track, the track slidably receiving the base such that the base is restricted to sliding in a first direction with respect to the guide along a sliding axis and a second direction with respect to the guide along the sliding axis that is opposite to the first direction. The tensioner includes a pawl and a ratchet each being a part of one of the sled and the guide, respectively, the pawl being in biased engagement with the ratchet to permit sliding in the first direction and restrict sliding in the second direction, the pawl being configured to be manually disengaged from the ratchet to permit sliding in the second direction. The tensioner includes a pulley coupled to the sled such that the pulley is free to rotate about a rotational axis that is transverse to the sliding axis.

Slide operator assemblies and components for fenestration units, as well as associated methods of manufacture and use thereof.

A corner drive assembly for a window locking system includes a case, a corner transfer spring, and first and second arms. The case includes first and second legs aligned with respective first and second axes. The legs are joined by a corner portion having an outer relief surface that is disposed adjacent to and spaced apart from a corner of a window frame. The spring is slidably disposed within the corner portion and has first and second ends slidable along the first and second axes, respectively. The first arm is disposed within the first leg, slidable along the first axis, and coupled to the first end of the spring. The second arm is within the second leg, slidable along the second axis, and coupled to the second end of the spring. The first and second arms are coupled to respective first and second link bars of the locking system.

A corner drive assembly for a window locking system includes a case, a corner transfer spring, and first and second arms. The case includes first and second legs aligned with respective first and second axes. The legs are joined by a corner portion having an outer relief surface that is disposed adjacent to and spaced apart from a corner of a window frame. The spring is slidably disposed within the corner portion and has first and second ends slidable along the first and second axes, respectively. The first arm is disposed within the first leg, slidable along the first axis, and coupled to the first end of the spring. The second arm is within the second leg, slidable along the second axis, and coupled to the second end of the spring. The first and second arms are coupled to respective first and second link bars of the locking system.

A large diameter portion is provided on one side of a closing side drum in an axial direction, a small diameter portion having a diameter gradually decreasing from the large diameter portion to the other side of the closing side drum is provided on the other side of the closing side drum, a partition wall disposed between adjacent small diameter cable grooves in the axial direction of the closing side drum to prevent a closing side cable from slipping out of the small diameter cable grooves is provided in the small diameter portion. Accordingly, the thick partition wall provided in the small diameter portion can reliably prevent the closing side cable from slipping out (derailing) from the small diameter cable grooves even when a winding position of the closing side cable on the closing side drum is changed and transferred from the large diameter portion to the small diameter portion.

A large diameter portion is provided on one side of a closing side drum in an axial direction, a small diameter portion having a diameter gradually decreasing from the large diameter portion to the other side of the closing side drum is provided on the other side of the closing side drum, a partition wall disposed between adjacent small diameter cable grooves in the axial direction of the closing side drum to prevent a closing side cable from slipping out of the small diameter cable grooves is provided in the small diameter portion. Accordingly, the thick partition wall provided in the small diameter portion can reliably prevent the closing side cable from slipping out (derailing) from the small diameter cable grooves even when a winding position of the closing side cable on the closing side drum is changed and transferred from the large diameter portion to the small diameter portion.

A corner deflector of a fitting for a window casement or a door leaf, insertable into a C-shaped casement/leaf groove in the rebate of a frame profile of the casement/leaf. The corner deflector having a first corner limb and a second corner limb at right angles to the first corner limb. A groove for a limb of the casement/leaf groove, the limb groove having an undercut, is provided on a first longitudinal side of the first corner limb and/or of the second corner limb. The region of the second longitudinal side of the first and/or second corner limb which is located opposite the undercut of the first longitudinal side is undercut-free. At least one securing element is provided on the second longitudinal side, which can be moved relative to the second longitudinal side between a securing position and a disengagement position.

A corner deflector of a fitting for a window casement or a door leaf, insertable into a C-shaped casement/leaf groove in the rebate of a frame profile of the casement/leaf. The corner deflector having a first corner limb and a second corner limb at right angles to the first corner limb. A groove for a limb of the casement/leaf groove, the limb groove having an undercut, is provided on a first longitudinal side of the first corner limb and/or of the second corner limb. The region of the second longitudinal side of the first and/or second corner limb which is located opposite the undercut of the first longitudinal side is undercut-free. At least one securing element is provided on the second longitudinal side, which can be moved relative to the second longitudinal side between a securing position and a disengagement position.

Disclosed is a sliding door or window. The sliding door or window includes a door/window frame, a swing fastening mechanism is disposed at a lower end of a side of the door/window frame, and a locking structure is mounted on an upper end of the side of the door/window frame. The swing fastening mechanism and the locking structure are each provided with a snakelike groove inside which a shaft operative to slide along a groove orientation is arranged. A handle disposed on the door/window frame is operative to drive the shaft to slide in the snakelike groove, thereby forcing the swing fastening mechanism or/and the locking structure to swing.

The invention relates to as sliding panel system. The system comprises a frame and a combination of one or more pivot panels and sliding panels. Each sliding panel is displaceable, in particular slidable, within the frame and part of the sliding panel can be fixated with respect to the frame such that the sliding panel can be pivotably displaced between a closed and an opened position.