A window system includes a frame that includes a head, a sill, and opposing left and right vertical jambs, the left and right vertical jambs extending contiguously between the head and the sill, a fixed lite assembly fixed to the frame, a vent pivotably mounted to the frame and vertically offset from the fixed lite assembly, and a meeting rail interposing the fixed lite assembly and the vent.

The present disclosure provides a water-blocking device including a water-blocking plate installed on a floor of a passage, rails installed on both sidewalls of the floor, and a driving part configured to lift and lower the water-blocking plate, wherein, when the driving part is operated, the water-blocking plate is lifted and lowered along the rails.

The present disclosure provides a water-blocking device including a water-blocking plate installed on a floor of a passage, rails installed on both sidewalls of the floor, and a driving part configured to lift and lower the water-blocking plate, wherein, when the driving part is operated, the water-blocking plate is lifted and lowered along the rails.

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 ventilation system for sectional-type garage doors, utilizing rollers and axle pins with device bodies of adjustable geometry to hold the upper section of the sectional door at an inwardly-rotated angle to facilitate venting of the space. Component installation and operation does not impact normal operation and is completely reversible, requiring no modifications to the door itself.

A ventilation system for sectional-type garage doors, utilizing rollers and axle pins with device bodies of adjustable geometry to hold the upper section of the sectional door at an inwardly-rotated angle to facilitate venting of the space. Component installation and operation does not impact normal operation and is completely reversible, requiring no modifications to the door itself.