A roof hatch for enabling access to a rooftop of a building from an interior of the building includes a curb adapter configured to be disposed over a curb of the rooftop. The curb is formed around an opening in the rooftop that fluidly connects the interior of the building to an exterior of the building. Additionally, the roof hatch includes a cover coupled to the curb adapter by a pivoting member. The cover includes a support extending within an interior length of the cover. The roof hatch includes a gas spring coupled between the support and the curb adapter. The gas spring is configured to apply a force to the support, and the support is configured to distribute the force along the interior length of the cover.

The present invention provides device that replaces the hinge pin in a door hinge to provide a door with automatic closing technology, triggered by the device's detection of an adverse condition in the surrounding environment, such as a fire or gas leak, the device including a lower extension pin that slides into the space conventionally occupied by the hinge pin, first and second arms that apply opposing rotational force to the door and door jam, respectively, when the device is activated, and a condition detection module employing at least one sensor and an activation system to activate the device upon the sensor's detection of an adverse environmental condition to close the door.

A roof hatch for enabling access to a rooftop of a building from an interior of the building includes a curb adapter configured to be disposed over a curb of the rooftop. The curb is formed around an opening in the rooftop that fluidly connects the interior of the building to an exterior of the building. Additionally, the roof hatch includes a cover coupled to the curb adapter by a pivoting member. The cover includes a support extending within an interior length of the cover. The roof hatch includes a gas spring coupled between the support and the curb adapter. The gas spring is configured to apply a force to the support, and the support is configured to distribute the force along the interior length of the cover.

A drive unit for closing a leaf of a door or a window comprises an energy accumulator for providing a closing force for closing the leaf, a damping device which counteracts the closing force and has an electric motor which can be operated as a generator and can be coupled to an actuating element of the drive unit, and a control device for controlling the electric motor. The control device is designed to determine a nominal path curve which indicates a position of the leaf or a closing speed of the leaf in dependence upon time, and to perform the control of the electric motor in order to damp the closing movement of the leaf on the basis of the established target path curve.