Version: 2023.08
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This area was updated. Please refer to the CPC Notices of Changes and Notices of Editorial Corrections for more information.
CPC | COOPERATIVE PATENT CLASSIFICATION | ||||||
| G04F | TIME-INTERVAL MEASURING (measuring pulse characteristics G01R, e.g. G01R 29/02; in radar or like systems G01S) [2023-02] NOTE
WARNINGS
|
G04F 1/00 | Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals without driving mechanisms, e.g. egg timers [2023-02] |
G04F 1/005 | . | {using electronic timing, e.g. counting means (pulse time delay arrangements H03K 5/13; modifications of electronic switches for introducing a time delay before switching H03K 17/28)} [2013-01] |
G04F 1/02 | . | by consuming prefixed quantities of materials, e.g. by burning candle [2013-01] |
G04F 1/04 | . | by movement or acceleration due to gravity [2013-01] |
G04F 1/06 | . . | by flowing-away of a prefixed quantity of fine-granular or liquid materials, e.g. sand-glass, water-clock [2013-01] |
G04F 1/063 | . . . | {using acoustic signalling} [2013-01] |
G04F 1/066 | . . . | {using electrical contact device} [2013-01] |
G04F 1/08 | . . | by a body falling a prefixed distance in air or in a viscous material [2013-01] |
G04F 3/00 | Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals with driving mechanisms, e.g. dosimeters with clockwork [2023-02] |
G04F 3/02 | . | with mechanical driving mechanisms [2013-01] |
G04F 3/022 | . . | {using mechanical signalling device} [2013-01] |
G04F 3/025 | . . | {mechanically actuated (cigar or cigarette receptacles or boxes with means for limiting the frequency of smoking A24F 15/005)} [2013-01] |
G04F 3/027 | . . | {using electrical contacts, e.g. for actuating electro-acoustic device} [2013-01] |
G04F 3/04 | . . | Additional arrangements in connection with ordinary non-electric clocks for this purpose [2013-01] |
G04F 3/06 | . | with electric driving mechanisms [2013-01] |
G04F 3/08 | . . | Additional arrangements in connection with ordinary electric clocks for this purpose [2013-01] |
G04F 5/00 | Apparatus for producing preselected time intervals for use as timing standards (generating clock signals for electric digital computers G06F 1/04) [2023-02] |
G04F 5/02 | . | Metronomes [2023-02] |
G04F 5/022 | . . | {Mechanic metronomes} [2013-01] |
G04F 5/025 | . . | {Electronic metronomes (rhytem generation for electrophonic musical instruments G10H 1/36)} [2015-11] |
G04F 5/027 | . . | {using electro-mechanical driving, e.g. of optical scanned recordings (electrophonic musical instruments in which tones are generated by electromechanical means, e.g. by using pick-up means for reading recorded waves G10H 3/00)} [2016-08] |
G04F 5/04 | . | using oscillators with electromechanical resonators {producing electric oscillations or timing pulses} [2013-01] |
G04F 5/06 | . . | using piezoelectric resonators [2023-08] |
G04F 5/08 | . . | using magnetostrictive resonators [2013-01] |
G04F 5/10 | . |
G04F 5/12 | . | using fluidic devices [2013-01] |
G04F 5/14 | . | using atomic clocks [2013-01] |
G04F 5/145 | . . | {using Coherent Population Trapping} [2013-01] |
G04F 5/16 | . | using pulses produced by radio-isotopes [2023-02] |
G04F 7/00 | Apparatus for measuring unknown time intervals by non-electric means (using fluidic means G04F 13/06) [2023-02] |
G04F 7/02 | . | by measuring the distance of fall or the final velocity of a falling body [2013-01] |
G04F 7/04 | . | using a mechanical oscillator [2020-01] |
G04F 7/06 | . . | running only during the time interval to be measured, e.g. stop-watch [2013-01] |
G04F 7/062 | . . . | {with reset mechanisms} [2013-01] |
G04F 7/065 | . . . | {with start-stop control arrangements} [2013-01] |
G04F 7/067 | . . . . | {with a single push-button or actuation member for start-stop and reset} [2013-01] |
G04F 7/08 | . . | Watches or clocks with stop devices, e.g. chronograph [2013-01] |
G04F 7/0804 | . . . | {with reset mechanisms} [2013-01] |
G04F 7/0809 | . . . . | {with single hammers, i.e. one hammer acts on each counter} [2013-01] |
G04F 7/0814 | . . . . | {with double hammer, i.e. one hammer acts on two counters} [2013-01] |
G04F 7/0819 | . . . . | {with triple hammer, i.e. one hammer acts on three counters} [2013-01] |
G04F 7/0823 | . . . | {with couplings between the chronograph mechanism and the base movement} [2013-01] |
G04F 7/0828 | . . . . | {acting in the plane of the movement} [2013-01] |
G04F 7/0833 | . . . . | {acting perpendicular to the plane of the movement} [2013-01] |
G04F 7/0838 | . . . . | {involving a tilting movement} [2013-01] |
G04F 7/0842 | . . . | {with start-stop control mechanisms} [2013-01] |
G04F 7/0847 | . . . . | {with column wheel} [2013-01] |
G04F 7/0852 | . . . . | {with member having a rotational two-way movement, e.g. navette} [2013-01] |
G04F 7/0857 | . . . . | {with single push-button or actuation member for start-stop and reset} [2013-01] |
G04F 7/0861 | . . . . | {actuated by other than push-buttons, e.g. bezel or lever} [2013-01] |
G04F 7/0866 | . . . | {Special arrangements} [2013-01] |
G04F 7/0871 | . . . . | {with multiple chronograph functions, i.e. to count multiple running times (alternate time counting G07C)} [2013-01] |
G04F 7/0876 | . . . . | {Split-time function, e.g. rattrappante} [2016-08] |
G04F 7/088 | . . . . | {with display of fraction of seconds, e.g. foudroyante} [2013-01] |
G04F 7/0885 | . . . . | {Modular constructions involving interchangeability with one or more chronograph modules on a single base movement} [2013-01] |
G04F 7/089 | . . . . | {indicating measured time by other than hands, e.g. numbered bands, drums, discs or sheet (current time indication other than by hand G04B 19/20)} [2016-08] |
G04F 7/0895 | . . . . | {with a separate barrel for the chronograph functions (barrel in a separable module G04F 7/0885)} [2013-01] |
G04F 7/10 | . | Means used apart from the time-piece for starting or stopping same [2023-02] |
G04F 8/00 | Apparatus for measuring unknown time intervals by electromechanical means [2013-01] |
G04F 8/003 | . | {using continuously running driving means} [2013-01] |
G04F 8/006 | . | {running only during the time interval to be measured, e.g. stop-watch} [2013-01] |
G04F 8/02 | . |
G04F 8/04 | . . | using a piezoelectric oscillator [2023-08] |
G04F 8/06 | . . | using a magnetostrictive oscillator [2019-05] |
G04F 8/08 | . | Means used apart from the time-piece for starting or stopping same [2013-01] |
G04F 10/00 | Apparatus for measuring unknown time intervals by electric means [2023-02] |
G04F 10/005 | . |
G04F 10/02 | . | using oscillators with passive electric resonator, e.g. lumped LC {(G04F 10/04, G04F 10/06 and G04F 10/10 take precedence)} [2013-01] |
G04F 10/04 | . |
G04F 10/06 | . |
G04F 10/10 | . | by measuring electric or magnetic quantities changing in proportion to time [2013-01] |
G04F 10/105 | . . | {with conversion of the time-intervals} [2013-01] |
G04F 13/00 | Apparatus for measuring unknown time intervals by means not provided for in groups G04F 5/00 - G04F 10/00 [2016-05] |
G04F 13/02 | . | using optical means [2013-01] |
G04F 13/023 | . . | {using cathode-ray oscilloscopes (circuits for inserting reference time markers for cathode-ray oscilloscopes G01R 13/305)} [2013-01] |
G04F 13/026 | . . |
G04F 13/04 | . | using electrochemical means [2016-11] |
G04F 13/06 | . | using fluidic means [2016-11] |