Abstract: A trailer connected to a vehicle to carry an extra load. The trailer has a bracket with flexible arms and a fixative. The flexible arms are adapted to form bearings together with a bicycle rear wheel axle. Because of the flexibility of the flexible arms the bracket can be pivotally connected to the axle of the rear wheel of a two-wheel vehicle without disassembling the vehicle while connecting and disconnecting it. That simplifies and accelerates the process of connecting the trailer to and disconnecting it from the vehicle. A passenger version of the trailer has rigid child chairs with safety belts mounted on the trailer base, and a safety frame, preventing children from getting hurt. The frame is pivotally mounted to the base and can be rotated about 180 degrees until it touches the ground, opening a space for loading and unloading the trailer and having more support points to prevent the trailer from falling over.

Abstract: A miniature gas duct outlet for automatically and continuously changing the direction of a gas stream. A blade drive wheel is rotated by the gas stream moving through a duct. The blade drive wheel rotates an axle with round blades rigidly mounted at an acute angle to the axle. The moving round blades continuously change the direction of the gas from one extreme angle to another. The blade drive wheel is mounted on a lever which can be turned by operator from drive position to not drive position. The blade drive wheel being in the drive position is positioned partly in the flow of gas through the outlet and is forced to rotate. The blade drive wheel being in the non-drive position is totally out of the flow of gas and motionless. The housing of the outlet has a shape which allows the housing to be mounted pivotally to the duct and also allows to rotate manually the plane of the continuously changing direction of the gas stream.