The present disclosure describes various embodiments of a concealed or hidden door closer that is installed in a rail of a door assembly. In some embodiments, the door frame and door closer components are configured to allow the door assembly to be readily installed as either a left or a right hand hinged door.

The present disclosure describes various embodiments of a concealed or hidden door closer that is installed in a rail of a door assembly. In some embodiments, the door frame and door closer components are configured to allow the door assembly to be readily installed as either a left or a right hand hinged door.

The present invention discloses anon-power driven window capable of adjusting ventilation rate. When the sash is unlocked, due to combined action of the sash's gravitational torque and the expansion of a torsion spring against the sash, the window keeps open. The window is designed having a bigger size in the lower section below the pivot than that in the upper section. Subject to the outdoor wind blowing, the moment by the outdoor wind tends to shut the window. In addition, the upper screen is installed in the outer side of the pane above the pivot, while lower screen is installed to the inner side of the pane below the pivot. Thus the lower sash is exposed into the outdoor air and can be easily blown by the outdoor wind. Consequently, the stronger is the outdoor wind, the smaller is the effective opening of the window for ventilation, and vice versa.

The present invention discloses anon-power driven window capable of adjusting ventilation rate. When the sash is unlocked, due to combined action of the sash's gravitational torque and the expansion of a torsion spring against the sash, the window keeps open. The window is designed having a bigger size in the lower section below the pivot than that in the upper section. Subject to the outdoor wind blowing, the moment by the outdoor wind tends to shut the window. In addition, the upper screen is installed in the outer side of the pane above the pivot, while lower screen is installed to the inner side of the pane below the pivot. Thus the lower sash is exposed into the outdoor air and can be easily blown by the outdoor wind. Consequently, the stronger is the outdoor wind, the smaller is the effective opening of the window for ventilation, and vice versa.

A device (1), for closing a room opening (2), comprising a frame (3) and a vertically pivoted casement or leaf (4) having at least one pivot point (5). The vertically pivoted casement or leaf (4) is fixed to the frame (3) at the pivot point so that the vertically pivoted casement or leaf (4) is rotatably relative to the frame (3) in the reveal (7) of the room opening (2). The device (1) comprises a first frame seal (8) to seal between the vertically pivoted casement or leaf (4) and the frame (3). The vertically pivoted casement or leaf (4) has an inside (9), an opposite outside (10) and an end face (11). In a closed position (40) of the vertically pivoted casement or leaf, the first frame seal (8) is arranged running around the end face of the vertically pivoted casement or leaf and is at least partially inflatable.

The present invention discloses a left-right door opening mechanism and a refrigerator. The left-right door opening mechanism comprises first modules symmetrically arranged on the left side and the right side of a door body, and second modules symmetrically arranged on the left side and the right side of a refrigerator body. Each first module comprises a mounting bottom plate and gears rotatable on the mounting bottom plate. Each first module is provided with an opening. Each second module comprises a rack in transmission with the corresponding gear, a hinge used for fixing the rack, a rotating shaft mounted in cooperation with the hinge, and a guiding slider fixedly located below the hinge. When the left-right door opening mechanism is in a locked state, the rotating shafts are accommodated in the openings.

An apparatus for mounting objects disclosed herein. The apparatus includes a first mounting arm comprising a first portion affixed to a first surface and a second portion coupled to a frame, wherein the second portion is rotatably coupled to the first portion; and a second mounting arm comprising a first portion affixed to a second surface and a second portion coupled to the frame, wherein the second portion is rotatably coupled to the first portion. The first mounting arm and the second mounting arm define an axis of rotation about which the frame rotates, wherein the axis of rotation comprises a first angle relative to the first surface and a second angle relative to the second surface, wherein the first angle and the second angle are substantially congruent and less than 90-degrees.

There is provided in a first form of an illustrative embodiment a method. The method includes providing a quantity of carbon dioxide in gaseous form within an interior volume of an vessel and contacting the carbon dioxide gas with a heat exchanger disposed within the interior volume of the vessel. The vessel is exposed to solar radiation, wherein the carbon dioxide absorbs radiation in one or more vibration bands of the carbon dioxide, the absorbed radiation obtained from the solar radiation. Heat within the first quantity of carbon dioxide produced by collisional thermalization of the absorbed radiation is transferred, via the heat exchanger, to a heat transfer medium within the heat exchanger and in fluid communication with an external environment of the vessel.

An apparatus for mounting objects disclosed herein. The apparatus includes a first mounting arm comprising a first portion affixed to a first surface and a second portion coupled to a frame, wherein the second portion is rotatably coupled to the first portion; and a second mounting arm comprising a first portion affixed to a second surface and a second portion coupled to the frame, wherein the second portion is rotatably coupled to the first portion. The first mounting arm and the second mounting arm define an axis of rotation about which the frame rotates, wherein the axis of rotation comprises a first angle relative to the first surface and a second angle relative to the second surface, wherein the first angle and the second angle are substantially congruent and less than 90-degrees.

A window structure is configured to form a principal chamber enclosing a first window pane installed in an exterior wall of a building. The window structure includes a first surface configured to absorb solar energy and a main frame including a second window pane. An axial hinge is configured to allow to the main frame to tilt between a first position and a second position. When the main frame is tilted in the first position, the first surface is positioned in a first orientation that allows the first surface to directly receive sunlight through the second window pane. When the main frame is tilted in the second position, the first surface is positioned in a second orientation in which the first surface is prevented from directly receiving sunlight through the second window pane. The window structure may be used for ventilating the structure and shading during the warm weather.