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APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES (machine tools in general B23, B24; hand tools in general B25)
Definition statement
This subclass/group covers:

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

Relationship between large subject matter areas

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 within this subclass

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 subclass/group 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.

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
B25 J
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 subclass/group 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.

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
Machines for assembling or disassembling parts
Setting gems or the like on metal parts, e.g. diamonds on tools
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 G04B31/00T; oilcans for lubricating in general F16N 3/04}
Definition statement
This subclass/group covers:

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

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 subclass/group 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.

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 (demagnetising in general H01F 13/00)
Definition statement
This subclass/group covers:

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

Informative references
Attention is drawn to the following places, which may be of interest for search:
Demagnetising devices in general
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Last Modified: 10/11/2013