G
SECTION G — PHYSICS
 G

Note(s)

  1. 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).
  2. 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 G01 and "control" and "regulation" in class G05.
  3. 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 (G09), for enabling the result of a measurement to be known (G01), for signalling the information to a distant point or for giving information which has been signalled from a distant point (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 (G01L) or about some other condition linked to the pressure (another subclass of class G01, e.g., G01K for temperature), to make a record of the pressure or of its occurrence (G07C), to give an alarm (G08B), or to control another apparatus (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
 G07B
TICKET-ISSUING APPARATUS; FARE-REGISTERING APPARATUS; FRANKING APPARATUS
 G07B
Subclass index
MACHINES FOR PRINTING OR ISSUING TICKETS; DETAILS THEREOF 1/00, 3/00; 5/00
OTHER APPARATUS OR SYSTEMS CONCERNING TICKETS
Holders; punches; validating; cancelling 7/00; 9/00; 11/00
TAXIMETERS; APPARATUS FOR COLLECTING FARES OR FEES 13/00; 15/00
FRANKING APPARATUS 17/00
P:30 G07B 1/00
Machines for printing and issuing tickets (printing mechanisms per se B41; output mechanisms of digital computers G06C 11/00)
 G07B 1/02
·  employing selectable printing plates
 G07B 1/06
·  without selectable printing plates
 G07B 1/08
·  portable
P:40 G07B 3/00
Machines for issuing preprinted tickets
P:60 G07B 5/00
Details of, or auxiliary devices for, ticket-issuing machines (for validating inserted tickets G07B 11/00)
 G07B 5/04
·  for recording or registering tickets issued
P:80 G07B 7/00
Holders providing direct manual access to the tickets
P:70 G07B 9/00
Ticket punches (perforating pliers B26F 1/32; marking record carriers in digital fashion by punching G06K 1/00)
P:50 G07B 11/00
Apparatus for validating or cancelling issued tickets  [2]
P:20 G07B 13/00
Taximeters (measuring distance travelled G01C; measuring time G04)
P:10 G07B 15/00
Arrangements or apparatus for collecting fares, tolls, or entrance fees at a control point (coin-handling aspects G07D; vending or hiring apparatus actuated by tokens or tickets G07F 7/00, G07F 17/00)
 G07B 15/02
·  with provision for taking into account a variable factor such as distance or time, e.g. for passenger transport
P:0 G07B 17/00
Franking apparatus (printing aspects B41)