Abstract: A safety ventilation device for vehicles or other applications has a housing with one or more openings covered by a hinged flap with the flaps interconnected by a connecting element. A spring is attached to the connecting element or otherwise to the flaps such that in a first position the spring keeps the flaps open and air can pass through the openings. In a second position, upon the application of force to the flaps, such as airflow caused by a moving vehicle, the spring compresses, and the flaps close. The housing of the device includes a protrusion at the top and a channel at the bottom to facilitate an interference fit between a window and a window or door frame.

Abstract: A smart nozzle system for a hair dryer includes a proximity detection circuit, a temperature sensing circuit, a speed detection circuit, and a rotating nozzle vane, among other features. The nozzle includes a microcontroller and a wireless communication module to interface with an external computing device via an application. Also included is a camera and timer functionality. The nozzle can be an add-on to existing hair dryers or can be integral with a hair dryer system.

Abstract: A power adapter has a main body, a first bus connector, and a second bus connector. The bus connectors are coupled to each other by an integrated circuit. The power adapter draws current from a first power source, such as a smartphone, to a second power source, such as an electronic cigarette. The power adapter snaps into a keyring receptacle for easy use and transportation. The receptacle has a hinged retention member for retaining spare electronic smoking device cartridges or other items.