Abstract: A portable unit for the input of data in a digital device, includes a control panel (1) on which is located a table (2) with a group of symbols (16) in a number of fields (13), and a base plate (3) with pressure contacts (4, 5). Two selection elements (8, 9) can be moved parallel to the rows (14) and the columns (15) of the table (2) until they are situated opposite to or above a pressure contact (4, 5) in the extension of a selected row (14) or column (15); a pressure mechanism (7) changes the position of the pressure contacts (4, 5) by means of the selection elements (8, 9) situated opposite to or under the latter; and a number of additional pressure contacts (6) which can be manually operated, whose number is equal to the maximum number of symbols (16) of a field (13) is provided.

Abstract: A wind-powered ventilator includes a pressurization conduit hood mounted on the periphery of an automatic directional type or worm gear type ventilator. The conduit hood is arranged to pressurize atmospheric wind, however feeble and minimal, and conduct the wind to produce a pressurization effect, causing a pressurized wind moment to pass directionally through the ventilator, thereby achieving enhanced drafting efficiency without the intervention of artificial power sources.

Abstract: An electrical machine structure includes a plurality of magnetic circuit units, each including at least two magnetic poles interconnected by a magnetic circuit structure. The magnetic circuit units are stacked or intercrossed in such a way that ventilation openings are formed between the magnetic circuit units. Clearances between the magnetic poles and an interactive electrical machine structure or rotor are arranged to vary asymmetrically across the lengths of the poles to provide a more uniform flux distribution. The use of relatively small magnetic circuit units arranged to form ventilation openings, and the manner in which the clearance between the magnetic poles is varied, enables the use of smaller pole structures than is possible with a conventional more integral magnetic circuit structure.

Abstract: This invention provides a primary uniform heater in the natural temperature preserving main body and it is conducted to a room needed to be heated, where the temperature can disperse openly; the temperature is transferred by the heat-conductive fluid by a main pump, or further by a shunt pump; that is, fresh air enters into the primary uniform air-heater through an open filtered inlet, and enter the primay uniform heater of the natural temperature preserving main body and then it is pumped through a transfering tube to a detector in the room needed to be heated. If the conductive tube is long enough to be buried in the natural temperature preserving main body, the primary uniform heater can be omitted and the tube is made of good conductive material's to actuate the function of a primary uniform heating power; a primary filter, such as active carbon filter, tester for harmful gas, and air fresher, can be attached to the inlet and the outlet of the fresh air.