Abstract: A lock instruction tag for providing instructions to a user for opening locking mechanisms of luggage systems. The lock instruction tag includes a first portion having instructions for opening a luggage system and a second portion having an opening. The opening is sized to receive at least a portion of a zipper head of the luggage system.

Abstract: A hollow electrical conductor coolable to extremely low temperatures is disclosed. The conductor is hollow and has a connection for the introduction of extremely cold gases in a liquid or gaseous state and an outlet for the gases. At least one hose element (5; 24) is arranged in the hollow conductor (1; 19; 22; 23) and is connected to a gas connection and provided with perforations (6) to allow the gas to pass out. The hollow conductor (1; 19; 22; 23) is useful as an induction coil for induction furnaces for heating, keeping hot or melting metallic material. The external diameter of the hose element (5; 24) is smaller than the internal diameter of the hollow conductor (1; 19; 22; 23). The hollow conductor has passages (6a) in the wall to allow the gas to pass out and is fitted with a jacket (8) which provides an annular clearance to the hollow conductor and the gas emerging from the hollow conductor (1; 19; 22; 23) is collected and carried away.

Abstract: For a spacecraft in an equatorial or low inclination orbit predictable roll disturbance torques due principally to solar radiation pressure are minimized by interacting a magnetic dipole oriented parallel to the spacecraft's yaw axis with the earth's magnetic field. Signals either from an on board sun sensor or from an earth station are utilized by the satellite mounted magnetic switching and driver circuit to control the compensating torques.

Abstract: Attitude of a pitch momentum biased satellite in a low inclination orbit is controlled by a closed loop magnetic torquing control system. A magnetic dipole oriented perpendicular to the satellite's pitch axis in the roll/yaw plane and at a predetermined azimuth angle relative to the roll axis minimizes roll and yaw errors by interaction with the earth's magnetic field. Signals from an on-board roll attitude sensor are used by satellite mounted detection and driver circuits to control the compensating torques. Magnetic torquing is initiated whenever the roll error as measured by the roll attitude sensor exceeds a predetermined threshold.