A locking device for a sash window having a window sash moveably mounted in a window frame, the locking device comprising a body and a locking element moveable between an unlocked position and a locked position. The device includes a sensor system to detect whether the window sash is in a closed position in the window frame and also to detect whether the locking element is in the locked position. The device includes a first sensor comprising a first lock sensor component mounted for movement with the locking element and a second lock sensor component mounted to the body. The device also includes a second sensor comprising a first window sensor component arranged to be mounted to the sash window and a second window sensor component mounted to the body. The device includes a detent mechanism which acts with the positional arrangement of the sensors to provide a reliable system.

An apparatus is provided for securing together two members which are slidable towards and away from each other to provide a respective open and closed (locked) mode, wherein a plurality of devices are adapted to secure the members in a closed mode, and a control unit is adapted to operate the devices. The devices are in the embodiments described spaced longitudinally apart along a vertical edge or stile of a closure member, which may be a patio door, window, or other closure, with the control unit being disposed intermediate the devices and being operatively linked thereto by a connecting device for actuating the devices. The control unit may be driven manually by a control handle, by a solenoid, by an electric or electro-mechanical motor device, or by spring-loaded interlocking devices. The devices cooperate with keeper devices for securing the closure members together in the closed (locked) mode.

A vertically adjustable sash lock is described that improves the seal of windows. The vertically adjustable sash lock may include, for example, a housing configured to be coupled to a first window sash and a rotatable cam configured to rotatably engage with a keeper bracket coupled to a second window sash. A vertical member may be positioned through a threaded aperture of the rotatable cam. A knob coupled to the vertical member may drive a rotation of the vertical member, causing a vertical position of the rotatable cam relative to a bottom surface of the housing to adjust accordingly.

A locking assembly for a casement window including a frame having an elongated surface, comprising a tie bar guide adapted to be mounted on the window frame surface, the tie bar guide having first and second receiving grooves for slideably receiving segments of a tie bar in a tongue and groove manner, and a tie bar adapted to slide axially in a direction parallel to the window frame surface and having a partially curved profile and a cross-section comprising a flat central portion with a first segment comprising a first tongue and a second segment comprising a second tongue, the first and second segments on opposite sides relative to the central portion. The tie bar is slideably received in the tie bar guide such that the tie bar first tongue is received in the tie bar guide first receiving groove and the tie bar second tongue is received in the tie bar guide second receiving groove, to permit the position of the tie bar to be adjusted with respect to the tie bar guide in the longitudinal direction while preventing movement of the tie bar in a direction perpendicular to the longitudinal direction. One of the tie bar and tie bar guide has an opening in an exterior surface thereof and the other has a projection extending in a direction of the opening, wherein when the tie bar is slideably received within the tie bar guide, the projection and opening act as a detent to maintain the tie bar guide in a desired position.

Fenestration unit monitoring devices described herein are configured to retrofit an existing fenestration unit lock assembly to incorporate components that are capable of monitoring the locked or unlocked status of the existing fenestration unit lock assembly and/or the panel position status of a movable panel of the fenestration unit. The fenestration unit monitoring devices include a monitor housing configured for mounting on the surface of a frame member on which a fenestration unit lock assembly is already mounted. The monitor housing of the fenestration unit monitoring device includes a lock cavity such that a portion of the fenestration unit lock assembly is located in the lock cavity formed between the monitor housing and the surface of a frame member to which the monitor housing is mounted.

A child restraint device for preventing children from opening sliding doors or sliding windows, the device having a suction cup on each end of a handle, the suction cups being adapted to be attached to sliding door or sliding window panes that are disposed in different planes.

The tilt latch retainer apparatus and sashes incorporating the same described herein may provide a convenient construction for both initial insertion of a tilt latch assembly into a sash and/or for replacement of a tilt latch assembly in an existing sash. The tilt latch retainer apparatus and sashes incorporating the same may also provide reinforcement of the check rail on a sash including the tilt latch retainer apparatus such that the check rail including the tilt latch retainer apparatus is more resistant to mechanical deformation due to forces exerted on the check rail.

A window assembly is disclosed including a window casing; a sash assembly slidably mounted within the window casing, the sash assembly including first and second stiles extending between first and second rails; a first tilt latch assembly mounted in the first stile; a second tilt latch assembly mounted in the second stile; and a sash lock mounted to the first rail, the sash lock being operably connected to the first and second tilt latch assemblies to operate the first and second tilt latch assemblies between a latched position in which a latch member of each of the first and second tilt latch assemblies engages with the window casing assembly and an unlatched position in which the latch member of each of the first and second tilt latch assemblies is disengaged with the window casing assembly.

A lock assembly is provided for a window having a first sash and a second sash. The lock assembly comprises an elongate strip configured to be coupled to the first sash. The elongate strip has a plurality of recesses defined along a length of the elongate strip. The lock assembly also includes a lock member configured to be coupled to the second sash and operable to move along the length of the elongate strip. The lock member includes a biasing member and a coupler biased in a direction of the elongate strip by the biasing member. The coupler is configured to enter each of the plurality of recesses to selectively lock the lock member to the elongate strip.

A window fastener includes a forced-entry-resistant sash lock and tilt latch assembly. The sash lock is actuated to engage a keeper to lock the closed sash window. The tilt latch assembly permits sliding of the unlocked window, and prevents tilting until the tilt latch assembly is actuated by the interconnected sash lock. The sash lock and tilt latch assembly cooperate with a stop member secured to a master window frame, to limit opening of the window to a position between the closed position and a full open position, through contact of the latch assembly with a portion of the stop member. The sash lock is configured to actuate the latch assembly into a cocked position, permitting window movement beyond the limited position, and selective contact between the latch assembly and stop member that triggers latch assembly repositioning, causing automatic locking of the sash window when moved into the closed position.