(0)G05D:0/4:| IPC6 |
| SECTION G - PHYSICS |
| SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES |
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G05D001/00 - G05D011/16 |
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G 05 D |
SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES (for continuous casting of metals B 22 D 11/16; valves per se F 16 K; sensing non-electric variables, see the relevant subclasses of G 01; for regulating electric or magnetic variables G 05 F) |
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(1) |
This subclass does not cover features of general applicability to regulating systems, e.g. anti-hunting arrangements, which are covered by subclass G 05 B. |
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(2) |
In this subclass, the following term is used with the meaning indicated: |
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"systems" includes self-contained devices such as speed governors, pressure regulators. |
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(3) |
Control systems specially adapted for particular apparatus, machines or processes are classified in the subclasses for the apparatus, machines or processes, provided that there is specific provision for control or regulation relevant to the special adaptation, either at a detailed level (e.g.
A 21 B 1/40: "for regulating temperature in bakers' ovens") or at a general level (e.g. B 23 K 9/095: "for automatic control of welding parameters in arc welding"). Otherwise, classification is made in the most appropriate place in this subclass. |
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The following are lists of places where there is specific provision of the kind referred to above. Where such provision is at a detailed level, the places have been grouped according to the main groups of this subclass. Where the provision is at a general level (e.g. of a kind appropriate to more than one of the main groups specified in the lists, or to main groups G 05 D 27/00 or G 05 D 29/00), the places are listed under the title "General References". |
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Agricultural machines or implements |
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Steering controls of motor vehicles or trailers, i.e. means for initiating a change of direction |
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Arrangements for automatically controlling the steering depending on driving conditions |
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Chassis of endless-tracked vehicles |
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Marine steering; control of waterborne vessels |
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Controlling attitude or direction of aircraft ejector seats |
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Tool carriers in forging or pressing |
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Pattern-controlled boring or drilling tools |
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Planing or slotting machines controlled by copying device |
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Electrode to workpiece spacing in electric discharge and electrochemical machining |
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Workpiece in laser welding or cutting |
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Spindles in machine tools |
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Tool or work position in machine tools |
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Tools controlled by pattern or master model |
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Grinding controlled by patterns, drawings, magnetic tape or the like |
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Starting position in grinding |
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Actuating members in presses |
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Chassis of tracked vehicles |
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Dippers or buckets in dredgers |
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Fluid-pressure servomotors with follow-up action |
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Tracking of solar heat collectors |
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Photomechanical production of patterned or textured surfaces |
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Rotating heads in information storage systems |
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Movement of control elements in nuclear reactors |
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Thickness of coating of fluent material on surface |
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Thickness, width, diameter or other transverse dimensions of the products of metal-rolling mills |
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Dimension of glass ribbon |
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Thickness of layer in paper making |
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Air in hair drying helmets |
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Flow of media to the human body |
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Gases or vapour in electrostatic separators |
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Fluent material in coating devices |
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Dispensing beverages on draught |
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Obtaining liquids from wells |
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Flow in non-positive-displacement machines or systems |
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Coolant flow in cooling devices |
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Gas-turbine working fluid |
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Throttle passages in pipes |
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Air-flow or supply of heating or cooling fluids in air treatment arrangements |
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Air or gas flow in dryers |
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Continuous flow weighing apparatus |
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Coolant in nuclear power plant |
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Liquid level in sedimentation arrangements |
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Ink level in printing, manifolding or duplicating arrangements |
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Liquid pool electrodes in electric discharge tubes or lamps |
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Density in sedimentation arrangements |
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Mixtures of clays or cements |
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Flow ratio in jet-propulsion plants |
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Drum speed in metal drawing |
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Cutting velocity of tool or work |
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Setting or limiting speed of vehicles |
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Electrically-propelled vehicles |
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Cruising speed of aircraft |
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Feed rate in manufacture of artificial filaments, threads, fibres, bristles or ribbons |
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Warping, beaming or leasing machines |
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Cyclically varying speed of looms |
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Speed of fluid carrier in chemical analysis |
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Filamentary or web record carriers or heads for such carriers in information storage systems |
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Non-filamentary, non-web record carriers, or heads for such carriers in information storage systems |
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Portable percussive tools |
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Tension in filamentary material |
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Tension in webs, tapes, filamentary material |
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Rope, cable or chain tension |
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Tension in sewing machines |
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Pressure in paper-making machines |
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Record carrier tension in information storage arrangements |
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