A multi-door enclosure for housing electrical equipment has a mechanical interlock device that interacts with a main primary door of the enclosure and the existing latch mechanisms of each of the remaining secondary doors to prevent such secondary doors from being opened unless the primary door is first opened. The interlock includes a lever arm that engages and is displaced by the primary door when closed. Such movement of the lever arm is transmitted via a mechanical linkage system to move one or more latch disabling members into disabling relation with the latch mechanisms of each of the secondary doors in order to retain the latch mechanisms in their latched positions and thereby lock the secondary doors in the closed position. Opening the secondary door allows the lever arm to return to its initial position which in turn retracts the latching members and allows unlatching and opening of the secondary doors.

A refrigerator includes: a cabinet; an upper door; a lower door that is a drawer type door; a draw-out rail that connects the lower door to a storage space in the cabinet and that guides insertion and withdrawal of the lower door in a front-rear direction; an elevation assembly that is located in the lower door, that elevates an object stored in the lower door in a state in which the lower door is withdrawn, and that elevates the object relative to the lower door; and a door restriction device configured to selectively restrict an opening movement of the upper door based on whether the lower door is opened or closed. The door restriction device is configured to restrict the opening movement of the upper door based on the lower door being opened, and to allow the opening movement of the upper door based on the lower door being closed.

A track-guided power door operator used to simultaneously open a set of opposing hinged doors is disclosed. The door operator comprises a pair of articulated arm linkages, each pair of which is pivotally mounted at one end to a vertically oriented pivot pin at one end of a guide member and pivotally connected at the other end to a vertically oriented pivot pin of a yoke member of a translating carriage, which is engaged by a horizontal lead screw. Translation of the carriage member due to rotation of the lead screw causes lateral separation between the knuckles of the articulated arm pairs to cause doors contacted by the knuckles to rotate about their respective hinges. The door operator may include a control unit to control operation of the doors. The operator may further include magnetic latches to lock the doors closed.

A device for delivery and retrieval of items is disclosed. The device comprising an enclosure, a lid, one or more shelves, and a door. The enclosure is configured to receive and store the items to be delivered to a homeowner. The enclosure includes an upper section and a lower section. The lid covers the upper section of the enclosure, which is accessible by opening the lid. The hinged shelves present within the enclosure is configured to hold the items received from the upper section of the enclosure. The hinged shelves swings down dropping the item to the lower section of the enclosure, and then automatically swings back to its originally position and locks into place. The items are accessible to the homeowner via the door positioned at the lower section of the enclosure. The device keeps the items secure and dry until the homeowner retrieves them.

An interlock for an enclosure can include a primary door activator with an activator arm, a secondary door activator, and a rotatable arrangement that links the primary and secondary door activators. The activator arm can block a primary door of the enclosure from being closed when the activator arm is in an open configuration. The activator arm can be configured to rotate with the rotatable arrangement in a first direction towards the open configuration as the primary door is opened, and in a second direction away from the open configuration as the primary door is closed. The secondary door activator can be configured to engage the rotatable arrangement to prevent rotation of the rotatable arrangement when the secondary door is open, and to permit rotation of the rotatable arrangement when the secondary door is closed.

An interlock for an enclosure can include a primary door activator with an activator arm, a secondary door activator, and a rotatable arrangement that links the primary and secondary door activators. The activator arm can block a primary door of the enclosure from being closed when the activator arm is in an open configuration. The activator arm can be configured to rotate with the rotatable arrangement in a first direction towards the open configuration as the primary door is opened, and in a second direction away from the open configuration as the primary door is closed. The secondary door activator can be configured to engage the rotatable arrangement to prevent rotation of the rotatable arrangement when the secondary door is open, and to permit rotation of the rotatable arrangement when the secondary door is closed.

A window assembly is disclosed that includes a double-hung window aesthetic with an alternative opening procedure and mechanism. The window assembly may include various hardware systems. The hardware systems may include locking portions to assist in locking sash members to a frame and balance assembly for moving the sash members. The window assembly may be formed of selected materials.

An auto-latching latch assembly (10) is mounted to a follower door (275) of a double door (257). The latch assembly (10) includes a latch (231) movable between an unlatching position and a latching position and a movable member (50) jointly movable with the latch (231). A positioning member (911) is jointly pivotable with the movable member (50). When the latch (231) moves to the unlatching position, the positioning member (911) positions the latch (231) in the unlatching position. When the follower door (275) is closed while a primary door (259) of the double door (257) is closed, an actuation latch (131) presses against and releases the positioning member (911) to move the latch (231) to the latching position, reliably locking the follower door (275).

A first lock assembly comprises a first alignment component operatively rotationally connected with the first rotatable component and a second lock assembly comprises a second alignment component operatively rotationally connected with the second rotatable component that will engage with one another upon moving the first door proximate to the second door, at least one of the first and second alignment components having a predetermined rotational orientation for engagement with the other of the first and second alignment components, the first and second alignment components each including interacting surfaces that during engagement with one another rotationally align the first and second alignment components with one another to create an effective rotational translational connection from the first lock assembly to the second lock assembly, whereby user initiated rotation of either the first or second rotatable component can cause locking or unlocking of the lockbolt or latch in one of or both the first and second doors. The first lock assembly can include a first mounting element to be fixed in place to the first door, and the first alignment component can comprise a movable component that is axially and rotationally movable relative to the first mounting element. A spring element can be operatively positioned between the first alignment component and the first rotatable component.

A first lock assembly comprises a first alignment component operatively rotationally connected with the first rotatable component and a second lock assembly comprises a second alignment component operatively rotationally connected with the second rotatable component that will engage with one another upon moving the first door proximate to the second door, at least one of the first and second alignment components having a predetermined rotational orientation for engagement with the other of the first and second alignment components, the first and second alignment components each including interacting surfaces that during engagement with one another rotationally align the first and second alignment components with one another to create an effective rotational translational connection from the first lock assembly to the second lock assembly, whereby user initiated rotation of either the first or second rotatable component can cause locking or unlocking of the lockbolt or latch in one of or both the first and second doors. The first lock assembly can include a first mounting element to be fixed in place to the first door, and the first alignment component can comprise a movable component that is axially and rotationally movable relative to the first mounting element. A spring element can be operatively positioned between the first alignment component and the first rotatable component.