Abstract: A thermal insulation structure includes a plurality of inner air and water vapour permeable insulating layers which entrap air and a water vapour permeable, at least substantially air impermeable film layer separating two said water vapour permeable insulating layers, the inner layers being sandwiched between first and second outer air and liquid water impermeable, water vapour permeable outer film layers, the construction and arrangement of the layers being such as to control, in use, water vapour transmission through the thermal insulation structure. Alternatively, a thermal insulation structure includes a plurality of inner air and water vapour permeable insulating layers which entrap air and an inner air and water vapour impermeable film layer separating two said insulating air entrapment layers, the inner layers being sandwiched between first and second outer air, liquid and moisture vapour impermeable outer film layers.

Abstract: An anti-theft mounting for radios, stereos and similar audio equipment used in motor vehicles has several features to discourage and possibly prevent the theft of equipment. The audio equipment is mounted within an opening in a dash of a motor vehicle. The equipment is partially mounted within a housing which moves forward so that a front of the equipment extends out of the opening when the equipment is desired to be used and moves rearward when the equipment is not desired to be used. When the equipment is in the rearward rest position, a door closes the opening. When the equipment is desired to be operated, the door opens and the equipment protrudes at least partially from the opening for easy access. The opening is sized so that while the equipment will fit snugly through the opening, the housing will not. The door and the equipment are controlled by worm gears. One worm gear controls the forward and rearward movement of the housing and audio equipment and two additional worm gears control the door.

Abstract: An anti-theft mounting for radios, stereos and similar audio equipment used in motor vehicles has several features to discourage and possibly prevent the theft of the equipment. The audio equipment is mounted within an opening in a dash of a motor vehicle. The equipment is partially mounted within a housing which moves forward so that a front of the equipment extends out of the opening when the equipment is desired to be used and moves rearward when the equipment is not desired to be used. When the equipment is in the rearward rest position, a door closes the opening. When the equipment is desired to be operated, the door opens and the equipment protrudes at least partially from the opening for easy access. The opening is sized so that the audio equipment will fit snugly within the opening but the housing will not. The mounting has control means connected to an ignition of the motor vehicle so that when the motor vehicle is operating, the equipment will be in the forward operating position.