Cooperative Patent Classification

CPC Definition - Subclass G04D

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Last Updated Version: 2016.11
APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
Definition statement

This place covers:

Apparatus, devices, tools and machines for manufacturing, processing, assembling, lubricating and testing clocks or watches and units thereof.

Relationships with other classification places

The general aspects of machine tools or metal-working not specially adapted for G04D are covered by class B23. Grinding and polishing in general are covered by class B24. The general aspects of hand tools, portable power-driven tools, handles for hand implements or manipulators are covered by class B25 .

Special rules of classification

In horology only a low percentage of patent applications deal with machines and tools, however manufacturing methods have become very popular: these are normally classified in G04B (for example G04B 17/066: manufacture of the spiral spring) however the working process of the machine may suggest a manufacturing process, so please consider searching in the relevant G04D subgroup when dealing with a manufacturing method.

Gripping, holding, or supporting devices {(stands in general F16M; for instruments G01D 11/30, B01L)}
Definition statement

This place covers:

Tools for assembling, disassembling and mounting such as tweezers, vice clamps; Supporting and holding devices for clockworks or parts of time-pieces; Equipment for opening or closing watch bottoms or covers.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Surgical pinsetters

Vices, hand vices, pliers, work holders or positioners in general

Manipulators

Supports in general

Supports specially adapted for an instruments or a set of instruments

Mounting the clockwork in the cases

Component assemblies of electronic time-pieces

Resilient or clamping means for holding component to structure

Watchmakers' or watch-repairers' machines or tools for working materials {(metal working in general class B23)}
Definition statement

This place covers:

Machines and tools for burnishing, lathing, gauging, lapping or for other processes of treatment of clocks or watches; Devices for fixing bearing jewels, placing the elements of bearings; Devices for shaping or setting watch glasses; Machines or apparatus for cleaning.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Tools for setting gems in jewellery

Making jewellery or other personal adornments

Cleaning in general

Setting gems or the like on metal parts, e.g. diamonds on tools

Machines for assembling or disassembling parts

Bearings and details thereof

Jewel bearings for mechanical watches

Sealing watch crystals or glasses

Automatically operating machines in a manufacturing environment

Oiling devices; Special lubricant containers for watchmakers {(bearings constructed with regard to oiling of the clockwork G04B 31/08; oilcans for lubricating in general F16N 3/04)}
Definition statement

This place covers:

Devices or arrangements for lubricating; Special lubricant containers for watchmakers.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Arrangements for lubricating tools or work

Special parts or details of bearings in view of lubrication

Lubricating in general

Lubrication of bearings using in clocks or watches

Measuring, counting, calibrating, testing or regulating apparatus {(measuring devices and calibers in general G01B; counters in general H03K)}
Definition statement

This place covers:

Arrangements or apparatus used for measuring, counting, calibrating, testing or regulating of clock’s units or parts, e.g. such as gearworks, balance wheels or hairsprings.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Instruments for measuring linear dimensions, angles, length or thickness

Instruments for measuring stress, force or torque in general

Instruments for measuring torque, adapted for special purposes

Testing static or dynamic balance of machines or structures

Arrangements for measuring frequencies of electronic signals

Adjusting escapements

Mechanisms for setting frequency of mechanically-driven clocks or watches

Time-interval measuring

Demagnetising devices
Definition statement

This place covers:

Devices or apparatus used for removing the magnetic field from clocks or watches or from parts thereof.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Demagnetising devices in general