|  | G |
SECTION G — PHYSICS

|  | G |
Note(s) In this section, the following term is used with the meaning indicated: "variable" (as a noun) means a feature or property (e.g., a dimension, a physical condition such as temperature, a quality such as density or colour) which, in respect of a particular entity (e.g., an object, a quantity of a substance, a beam of light) and at a particular instant, is capable of being measured; the variable may change, so that its numerical expression may assume different values at different times, in different conditions or in individual cases, but may be constant in respect of a particular entity in certain conditions or for practical purposes (e.g., the length of a bar may be regarded as constant for many purposes). Attention is drawn to the definitions of terms or expressions used, appearing in the notes of several of the classes in this section, in particular those of "measuring" in class Fulltext... Hierarchy... Expanded...G01 and "control" and "regulation" in class Fulltext... Hierarchy... Expanded...G05. Classification in this section may present more difficulty than in other sections, because the distinction between different fields of use rests to a considerable extent on differences in the intention of the user rather than on any constructional differences or differences in the manner of use, and because the subjects dealt with are often in effect systems or combinations, which have features or parts in common, rather than "things", which are readily distinguishable as a whole. For example, information (e.g., a set of figures) may be displayed for the purpose of education or advertising (Fulltext... Hierarchy... Expanded...G09), for enabling the result of a measurement to be known (Fulltext... Hierarchy... Expanded...G01), for signalling the information to a distant point or for giving information which has been signalled from a distant point (Fulltext... Hierarchy... Expanded...G08). The words used to describe the purpose depend on features that may be irrelevant to the form of the apparatus concerned, for example, such features as the desired effect on the person who sees the display, or whether the display is controlled from a remote point. Again, a device which responds to some change in a condition, e.g., in the pressure of a fluid, may be used, without modification of the device itself, to give information about the pressure (Fulltext... Hierarchy... Expanded...G01L) or about some other condition linked to the pressure (another subclass of class Fulltext... Hierarchy... Expanded...G01, e.g., Fulltext... Hierarchy... Expanded...G01K for temperature), to make a record of the pressure or of its occurrence (Fulltext... Hierarchy... Expanded...G07C), to give an alarm (Fulltext... Hierarchy... Expanded...G08B), or to control another apparatus (Fulltext... Hierarchy... Expanded...G05). The classification scheme is intended to enable things of a similar nature (as indicated above) to be classified together. It is therefore particularly necessary for the real nature of any technical subject to be decided before it can be properly classified.

INSTRUMENTS

|  | G05 |
CONTROLLING; REGULATING (specially adapted to a particular field of use, see the relevant place for that field, e.g. Fulltext... Hierarchy... Expanded...A62C 37/00, Fulltext... Hierarchy... Expanded...B03B 13/00, Fulltext... Hierarchy... Expanded...B23Q)

|  | G05 |
Note(s) This class covers methods, systems, and apparatus for controlling, in general. In this class, the following terms or expressions are used with the meanings indicated: "controlling" means influencing a variable in any way, e.g. changing its direction or its value (including changing it to or from zero), maintaining it constant, limiting its range of variation; "regulation" means maintaining a variable automatically at a desired value or within a desired range of values. The desired value or range may be fixed, or manually varied, or may vary with time according to a predetermined "programme" or according to variation of another variable. Regulation is a form of control; "automatic control" is often used in the art as a synonym for "regulation". Attention is drawn to the Notes following the title of section G, especially as regards the definition of the term "variable".

|  | G05G |
CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY ("Bowden" or like mechanisms Fulltext... Hierarchy... Expanded...F16C 1/10; gearings or mechanisms not peculiar to this purpose Fulltext... Hierarchy... Expanded...F16H; speed changing or reversing mechanisms for gearings conveying rotary motion Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F16H 59/00-F16H 63/00)

|  | G05G |
2. Note(s) This subclass covers: members of general applicability for mechanical control; mechanical systems for moving members to one or more definite settings. Systems peculiar to the control of particular machines or apparatus provided for in a single other class are classified in the relevant class for such machines or apparatus, for example: [6]
   Fulltext... Hierarchy... Expanded...A61G 13/02 | Controls for adjusting operating tables [6] |
   Fulltext... Hierarchy... Expanded...A61G 15/02 | Controls for adjusting operating chairs [6] |
   Fulltext... Hierarchy... Expanded...B25J | Manipulators, e.g. controls therefor [6] |
   Fulltext... Hierarchy... Expanded...B60K 26/00 | Arrangement or mounting of propulsion-unit control devices in vehicles [6] |
   Fulltext... Hierarchy... Expanded...B60T 7/00 | Vehicle brake-action initiating means [6] |
   Fulltext... Hierarchy... Expanded...B62D 33/073 | Adaptations of control devices for movable vehicle cabs [6] |
   Fulltext... Hierarchy... Expanded...B62K 21/00 | Cycle-steering devices [6] |
   Fulltext... Hierarchy... Expanded...B62K 23/00 | Rider-operated controls specially adapted for cycles [6] |
   Fulltext... Hierarchy... Expanded...B62L 3/00 | Brake-actuating mechanisms specially adapted for cycles [6] |
   Fulltext... Hierarchy... Expanded...B63H 25/02 | Marine steering initiating means [6] |
   Fulltext... Hierarchy... Expanded...B66B 1/00 | Controls for elevators [6] |
   Fulltext... Hierarchy... Expanded...B66C 13/18 | Control systems or devices for cranes [6] |
   Fulltext... Hierarchy... Expanded...B66C 13/56 | Arrangements of handles or pedals for crane operation [6] |
   Fulltext... Hierarchy... Expanded...E02F 9/20 | Control devices for dredging or soil shifting machines [6] |
   Fulltext... Hierarchy... Expanded...F16C 3/28 | Adjustable cranks or eccentrics [6] |
   Fulltext... Hierarchy... Expanded...F16D 43/00 | Automatic clutches [6] |
   Fulltext... Hierarchy... Expanded...F16K 31/00, Fulltext... Hierarchy... Expanded...F16K 33/00 | Controls for valves [6] |
   Fulltext... Hierarchy... Expanded...F16P 3/00 | Safety devices acting in conjunction with the control or operation of a machine [6] |
   Fulltext... Hierarchy... Expanded...F16P 7/02 | Stopping machines on occurence of dangerous conditions therein [6] |
   Fulltext... Hierarchy... Expanded...G02B 21/32 | Micromanipulators structurally combined with microscopes [6] |
   Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...G04B 1/00-G04B 18/00 | Driving mechanisms in clocks or watches [6] |
   Fulltext... Hierarchy... Expanded...G06C | Digital computers in which all the computation is effected mechanically [6] |
   Fulltext... Hierarchy... Expanded...G06F 3/02 | Manual computer input arrangements [6] |
   Fulltext... Hierarchy... Expanded...G06K 11/00 | Converting a pattern of mechanical parameters into electric signals [6] |
   Fulltext... Hierarchy... Expanded...G21C 7/08 | Displacement of solid control elements in nuclear reactors [6] |
   Fulltext... Hierarchy... Expanded...H01H | Mechanisms for operating switch contacts [6] |
   Fulltext... Hierarchy... Expanded...H03J 1/00 | Mechanical control of resonant circuits. [6] |

|  | G05G |
Subclass index
MANUALLY-ACTUATED CONTROL MECHANISMS, ONE OR MORE CONTROLLING MEMBERS ACTUATING ONE OR MORE CONTROLLED MEMBERS | 7/00, 9/00, 11/00, 13/00
AUTOMATIC MOVEMENT-INITIATING DEVICES; TRIP MECHANISMS | 15/00; 17/00
SERVO-MECHANISMS | 19/00
PROGRAMME-CONTROL DEVICES | 21/00
LOCKING MEANS, LIMITING MEANS; POSITIONING MEANS | 5/00; 23/00
COMPONENT PARTS | 1/00, 3/00, 25/00

|  | G05G 1/00 |
Controlling members; Assemblies or arrangements thereof; Indicating position of controlling members (means for holding or locking them in position Fulltext... Hierarchy... Expanded...G05G 5/00; specially for programme control Fulltext... Hierarchy... Expanded...G05G 21/00)

|  | G05G 1/02 |
· | Knobs or the like for actuation by pushing, pulling, or sliding movement; Assemblies thereof, e.g. keyboard (Fulltext... Hierarchy... Expanded...G05G 1/10 takes precedence)

|  | G05G 1/04 |
· | Levers for actuation by swinging movement; Assemblies thereof, e.g. keyboard

|  | G05G 1/06 |
· · | Details of their grip parts (Fulltext... Hierarchy... Expanded...G05G 1/10 takes precedence)

|  | G05G 1/08 |
· | Rotatable controlling members, e.g. hand wheel; Assemblies thereof

|  | G05G 1/10 |
· · | Details of the members themselves, e.g. of disc, knob, wheel, handle

|  | G05G 1/12 |
· · · | Means for securing the members on rotatable spindles or the like

|  | G05G 1/14 |
· | Controlling members for foot-actuation, e.g. pedal; Foot rests or foot guides

|  | G05G 1/16 |
· · | Non-slip treads therefor; Pedal extension or like attachments

|  | G05G 1/18 |
· · | Foot rests or foot guides, not on the pedal

|  | G05G 1/20 |
· | Controlling members specially adapted for actuation by other parts of the human body than hand or foot

|  | G05G 1/21 |
· | Controlling members specially adapted for actuation by auxiliary operating members or extensions; Operating members or extensions therefor (Fulltext... Hierarchy... Expanded...G05G 1/16 takes precedence) [5]

|  | G05G 1/22 |
· · | Controlling members specially adapted for actuation by keys, screwdrivers or like tools [5]

|  | G05G 1/24 |
· | Arrangements of a number of controlling members with respect to one another

|  | G05G 1/26 |
· | Rests or guides for relevant parts of the operator's body (Fulltext... Hierarchy... Expanded...G05G 1/18 takes precedence) [5]

|  | G05G 1/28 |
· | Arrangements for indicating the position of the controlling member [5]

|  | G05G 3/00 |
Controlled members, e.g. gear-shifter yoke; Assemblies or arrangements thereof (interlocking of controlled members Fulltext... Hierarchy... Expanded...G05G 5/08)

|  | G05G 5/00 |
Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member (Fulltext... Hierarchy... Expanded...G05G 17/00 takes precedence) [5]

|  | G05G 5/02 |
· | Means preventing undesired movements of a controlling member which can be moved in two or more separate steps or ways, e.g. restricting to a stepwise movement or to a particular sequence of movements (Fulltext... Hierarchy... Expanded...G05G 5/28 takes precedence)

|  | G05G 5/03 |
· | Means for enhancing the operator's awareness of arrival of the controlling member at a command or datum position, e.g. by feel (arrangements for indicating the position of the controlling member Fulltext... Hierarchy... Expanded...G05G 1/28) [5]

|  | G05G 5/04 |
· | Stops for limiting movement of members, e.g. adjustable stop (Fulltext... Hierarchy... Expanded...G05G 5/03, Fulltext... Hierarchy... Expanded...G05G 5/05, Fulltext... Hierarchy... Expanded...G05G 5/28 take precedence) [5]

|  | G05G 5/05 |
· | Means for returning or tending to return controlling members to an inoperative or neutral position, e.g. by providing return springs or resilient end-stops (Fulltext... Hierarchy... Expanded...G05G 5/28 takes precedence) [5]

|  | G05G 5/06 |
· | for holding members in one or a limited number of definite positions only (Fulltext... Hierarchy... Expanded...G05G 5/03, Fulltext... Hierarchy... Expanded...G05G 5/05, Fulltext... Hierarchy... Expanded...G05G 5/28 take precedence) [5]

|  | G05G 5/08 |
· · | Interlocking of members, e.g. locking a member in a particular position before or during the movement of another member

|  | G05G 5/12 |
· | for holding members in an indefinite number of positions, e.g. by a toothed quadrant (Fulltext... Hierarchy... Expanded...G05G 5/28 takes precedence) [5]

|  | G05G 5/14 |
· · | by locking a member with respect to a fixed quadrant, rod, or the like

|  | G05G 5/16 |
· · · | by friction

|  | G05G 5/18 |
· · · | by positive interengagement, e.g. by a pawl

|  | G05G 5/20 |
· · | by locking a quadrant, rod, or the like carried by the member

|  | G05G 5/22 |
· · · | by friction

|  | G05G 5/24 |
· · · | by positive interengagement, e.g. by a pawl

|  | G05G 5/26 |
· · | by other means than a quadrant, rod, or the like

|  | G05G 5/28 |
· | for preventing unauthorised access to the controlling member or its movement to a command position [5]

|  | G05G 7/00 |
Manually-actuated control mechanisms provided with one single controlling member co-operating with one single controlled member; Details thereof (controlling members Fulltext... Hierarchy... Expanded...G05G 1/00)

|  | G05G 7/02 |
· | characterised by special provisions for conveying or converting motion, or for acting at a distance

|  | G05G 7/04 |
· · | altering the ratio of motion or force between controlling member and controlled member as a function of the position of the controlling member

|  | G05G 7/06 |
· · | in which repeated movement of the controlling member produces increments of movement of the controlled member (Fulltext... Hierarchy... Expanded...G05G 7/08 takes precedence)

|  | G05G 7/08 |
· · | in which repeated movement of the controlling member moves the controlled member through a cycle of distinct positions

|  | G05G 7/10 |
· · | specially adapted for remote control (Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...G05G 7/04-G05G 7/08 take precedence)

|  | G05G 7/12 |
· | specially adapted for actuating a member on a system in motion with respect to the controlling member, e.g. on a rotating shaft

|  | G05G 7/14 |
· | characterised by means for delaying initiation of, or making more gradual throughout, the movement of the controlled member in response to a given input from the controlling member, e.g. by providing lost motion in the command train

|  | G05G 7/16 |
· | Special provisions for reducing the effect of slight relative movement between supports of the mechanism, e.g. resulting from resilient mounting of a controlled mechanism

|  | G05G 9/00 |
Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously

|  | G05G 9/02 |
· | the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only

|  | G05G 9/04 |
· · | in which movement in two or more ways can occur simultaneously

|  | G05G 9/047 |
· · · | the controlling member being movable by hand about orthogonal axes, e.g. joysticks [5]

|  | G05G 9/053 |
· · · · | the controlling member comprising a ball [5]

|  | G05G 9/06 |
· | the controlled members being actuated successively by repeated movement of the controlling member

|  | G05G 9/08 |
· | the controlled members being actuated successively by progressive movement of the controlling member

|  | G05G 9/10 |
· | with preselection and subsequent movement of each controlled member by movement of the controlling member in two different ways, e.g. guided by a shift gate

|  | G05G 11/00 |
Manually-actuated control mechanisms provided with two or more controlling members co-operating with one single controlled member

|  | G05G 13/00 |
Manually-actuated control mechanisms provided with two or more controlling members and also two or more controlled members (interlocking Fulltext... Hierarchy... Expanded...G05G 5/08)

|  | G05G 13/02 |
· | with separate controlling members for preselection and shifting of controlled members

|  | G05G 15/00 |
Mechanical devices for initiating a movement automatically due to a specific cause

|  | G05G 15/02 |
· | due to alteration of the sense of movement of a member

|  | G05G 15/04 |
· | due to distance or angle travelled by a member

|  | G05G 15/06 |
· | due to the speed of rotation or of bodily movement of a member, e.g. passing an upper or lower limit thereof (speedometers Fulltext... Hierarchy... Expanded...G01P)

|  | G05G 15/08 |
· | due to the load or torque on a member, e.g. if exceeding a predetermined value thereof

|  | G05G 17/00 |
Mechanical devices for moving a member after being released; Trip or release mechanisms characterised thereby

|  | G05G 19/00 |
Servo-mechanisms with follow-up action, e.g. occurring in steps

|  | G05G 21/00 |
Mechanical apparatus for control of a series of operations, i.e. programme control, e.g. involving a set of cams (Fulltext... Hierarchy... Expanded...G05G 5/02 takes precedence)

|  | G05G 23/00 |
Means for ensuring the correct positioning of parts of control mechanisms, e.g. for taking-up play

|  | G05G 23/02 |
· | self-adjusting

|  | G05G 25/00 |
Other details or appurtenances of control mechanisms, e.g. supporting intermediate members elastically

|  | G05G 25/02 |
· | Inhibiting the generation or transmission of noise [5]

|  | G05G 25/04 |
· | Sealing against entry of dust, weather or the like [5]