|  | 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

|  | G07 |
CHECKING-DEVICES

|  | G07D |
SORTING, TESTING, CHANGING, DELIVERING, OR OTHERWISE HANDLING COINS; TESTING OR CHANGING PAPER CURRENCY; TESTING SECURITIES, BONDS, OR SIMILAR VALUABLE PAPERS (sorting in general Fulltext... Hierarchy... Expanded...B07C) [2]

|  | G07D |
Note(s) In this subclass, the following term is used with the meaning indicated: "coins" covers also tokens or the like.

P:50 |  | G07D 1/00 |
Coin deliverers

|  | G07D 1/02 |
· | giving change (coin-actuated mechanisms in general Fulltext... Hierarchy... Expanded...G07F)

|  | G07D 1/04 |
· · | dispensing change equal to a sum deposited

|  | G07D 1/06 |
· · | dispensing the difference between a sum paid and a sum charged

|  | G07D 1/08 |
· · | hand actuated

P:40 |  | G07D 3/00 |
Apparatus separating a mixed bulk of currency into its denominations (sorting by coin weight Fulltext... Hierarchy... Expanded...G01G) [1,7]

|  | G07D 3/02 |
· | Sorting by means of graded apertures

|  | G07D 3/04 |
· · | arranged on an inclined rail

|  | G07D 3/06 |
· · | arranged along a circular path

|  | G07D 3/08 |
· · | arranged on a helix

|  | G07D 3/10 |
· · | provided by sieves arranged in series

|  | G07D 3/12 |
· | Sorting by means of stepped deflectors

|  | G07D 3/14 |
· | driven under control of coin-sensing elements

|  | G07D 3/16 |
· | combined with coin-counting apparatus

P:20 |  | G07D 5/00 |
Testing specially adapted to determine the identity or genuineness of coins, e.g. for segregating coins which are unacceptable or alien to a currency (apparatus separating a mixed bulk of currency into its denominations Fulltext... Hierarchy... Expanded...G07D 3/00) [1,7]

|  | G07D 5/02 - G07D 5/10 |
Note(s) In groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...G07D 5/02-G07D 5/10, in the absence of an indication to the contrary, classification is made in the last appropriate place. [3]

|  | G07D 5/02 |
· | Testing the dimensions, e.g. thickness, diameter; Testing the deformation [3]

|  | G07D 5/04 |
· | Testing the weight [3]

|  | G07D 5/06 |
· | Testing the hardness or elasticity [3]

|  | G07D 5/08 |
· | Testing the magnetic or electric properties [3]

|  | G07D 5/10 |
· | Testing the rim, e.g. the milling of the rim [3]

P:10 |  | G07D 7/00 |
Testing paper currency, securities, bonds, or similar valuable papers for genuineness (methods or arrangements for verifying the correctness of markings on a record carrier Fulltext... Hierarchy... Expanded...G06K 5/00) [2]

|  | G07D 7/02 - G07D 7/14 |
Note(s) Groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...G07D 7/16-G07D 7/20 take precedence over groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...G07D 7/02-G07D 7/14 [7]

|  | G07D 7/02 |
· | using electric means (Fulltext... Hierarchy... Expanded...G07D 7/04, Fulltext... Hierarchy... Expanded...G07D 7/06 take precedence) [7]

|  | G07D 7/04 |
· | using magnetic means, e.g. detection of magnetic imprint [7]

|  | G07D 7/06 |
· | using wave or particle radiation [7]

|  | G07D 7/08 |
· · | Acoustic waves [7]

|  | G07D 7/10 |
· · | Microwaves [7]

|  | G07D 7/12 |
· · | Visible light, infra-red or ultra-violet radiation [7]

|  | G07D 7/14 |
· | using chemical means [7]

|  | G07D 7/16 |
· | Testing the dimensions [7]

|  | G07D 7/18 |
· | Testing the stiffness [7]

|  | G07D 7/20 |
· | Testing patterns thereon [7]

P:60 |  | G07D 9/00 |
Devices for facilitating the handling of coins, not provided for in groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...G07D 1/00-G07D 5/00, Fulltext... Hierarchy... Expanded...G07D 11/00 or Fulltext... Hierarchy... Expanded...G07D 13/00 (of paper currency Fulltext... Hierarchy... Expanded...B65H); Devices for counting coins (counting by weighing Fulltext... Hierarchy... Expanded...G01G; counting paper currency Fulltext... Hierarchy... Expanded...G06M)

|  | G07D 9/02 |
· | Change trays

|  | G07D 9/04 |
· | Hand- or motor-driven devices for counting coins (counting mechanisms in general Fulltext... Hierarchy... Expanded...G06M)

|  | G07D 9/06 |
· | Devices for stacking or otherwise arranging coins on a support, e.g. apertured plate for use in counting coins

P:30 |  | G07D 11/00 |
Devices accepting coins or paper currencies, e.g. depositing machines (coin-freed or like apparatus Fulltext... Hierarchy... Expanded...G07F, e.g. complete banking systems Fulltext... Hierarchy... Expanded...G07F 19/00) [5]

P:0 |  | G07D 13/00 |
Handling coins or paper currencies characterised by a combination of mechanisms not covered by a single one of groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...G07D 1/00-G07D 11/00 (handling coins or paper currencies in combination with coin-freed or like apparatus Fulltext... Hierarchy... Expanded...G07F) [5]