A sash lock for a sash window assembly is disclosed. The sash window assembly includes an upper sash window and a lower sash window. Each of the sash windows is mounted within opposed guide rails on a master frame. At least one of the sash windows is slidable within the frame relative to the other sash window. The sash lock comprises either a keeper, with a keeper opening, for mounting on a rail of one of the sash windows or a recess in the lower rail of the upper sash. The sash lock disclosed herein includes a housing having a hole, an actuator arm, and a cam having a cam element for receipt into the keeper opening or the recess. The locking assembly also includes a shaft extending through the housing hole and operably coupling the actuator arm to the cam.

A sash window restrictor (20) has a housing (22) which is to be let into a vertical frame member (10) of one sash (normally the upper, outer sash) of a window, at a position, say, 10 cm above the top rail of the lower sash when the windows are closed. A tab (24) is mounted in the housing and can be retracted into the housing or extended from the housing. A mechanism acts between the tab and the housing and allows the tab to be pressed into the housing and held in the housing for a period of time before the tab is released to allow the tab to extend. With the tab extended, the lower sash (12) can be lifted until it reaches the tab (24) but no further, so that a 10 cm gap will be opened at the bottom of the window.

A sash window restrictor (20) has a housing (22) which is to be let into a vertical frame member (10) of one sash (normally the upper, outer sash) of a window, at a position, say, 10 cm above the top rail of the lower sash when the windows are closed. A tab (24) is mounted in the housing and can be retracted into the housing or extended from the housing. A mechanism acts between the tab and the housing and allows the tab to be pressed into the housing and held in the housing for a period of time before the tab is released to allow the tab to extend. With the tab extended, the lower sash (12) can be lifted until it reaches the tab (24) but no further, so that a 10 cm gap will be opened at the bottom of the window.

A cable operated mechanical locking external disconnect enclosure for multi-point latch uses. The enclosures provide safety, in that, once the main enclosure door is closed, and the disconnect is turned on, the main enclosure is locked and only automatically unlocks when the disconnect is turned off. Thus, the door of the disconnect enclosure is locked when the disconnect or circuit breakers are turned to the on position. There is also a manual by-pass latch for each door.

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 safety door latch system is presented for a grain bin having a door frame. An inner door is connected to the door frame that is configured to move between an open position and a closed position. An outer door is connected to the door frame and is configured to move between an open position and a closed position. A safety mechanism is connected to the door frame and is configured to move between an open position and a closed position. When the inner door frame is moved to a closed position, a portion of the inner door engages the safety mechanism thereby causing the safety mechanism to move to the closed position. When the safety mechanism is in the closed position, the outer door may be latched to the safety mechanism. When the safety mechanism is in the open position, the outer door cannot latch to the safety mechanism.

A door security device may restrict movement of a swinging door. The security device may include first and second door members and a connecting member. The first and second door members may be mounted to first and second door panels, respectively. The first and second door members include first and second slots, respectively. The connecting member has first end with a shape configured to mate with the first and second slots to permit the first end to slide into the first and second slots such that the connecting member extends out of the first slot and the second slot through openings in the first outer face and the second outer face.

A refrigerator includes a cabinet that defines a storage chamber, an upper door that is configured to open and close an upper portion of the storage chamber by being drawn in and out, a lower door that is positioned below the upper door and that is configured to open and close a lower portion of the storage chamber by being drawn in and out, an upper door restriction unit that is configured to selectively restrict the upper door from being opened, and a lower door restriction unit that is configured to selectively restrict the lower door from being opened. The upper door restriction unit is configured, based on the lower door being opened, to restrict the upper door from opening, and the lower door restriction unit is configured, based on the upper door being opened, to restrict the lower door from opening.

A refrigerator includes a cabinet that defines a storage chamber, an upper door that is configured to open and close an upper portion of the storage chamber by being drawn in and out, a lower door that is positioned below the upper door and that is configured to open and close a lower portion of the storage chamber by being drawn in and out, an upper door restriction unit that is configured to selectively restrict the upper door from being opened, and a lower door restriction unit that is configured to selectively restrict the lower door from being opened. The upper door restriction unit is configured, based on the lower door being opened, to restrict the upper door from opening, and the lower door restriction unit is configured, based on the upper door being opened, to restrict the lower door from opening.

A door security device can include a door member mounted to a swinging door, and a connector. The door member can include a slot having openings in at least one end and in an outer face. An end of a first leg of the connector can have a shape configured to mate with the first slot to permit the first leg to slide into the first slot such that the first leg extends out of the first slot through an opening in the outer face of the door member and such that a distal end of the second leg interferes with a surface of a door frame to prevent rotation of the swinging door relative to the door frame.