MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS (spring- or weight-driven mechanisms in general F03G; electromechanical clocks or watches G04C; electromechanical clocks with attached or built-in means operating any device at pre-selected times or after predetermined time intervals G04C23/00; clocks or watches with stop devices G04F7/08)

Description

G04B covers mechanical timepieces and their functional components, encompassing traditional clock and watch mechanisms driven by mechanical energy sources such as springs or weights. This includes escapement systems, gear trains, pendulums, balance wheels, and other mechanical regulating elements essential to timekeeping accuracy. The classification also extends to astronomical timepieces that determine time based on celestial positioning of the sun, moon, or stars. Related mechanical time measurement devices fall within this scope, while electronic or quartz-based timekeeping systems are excluded.

27 direct subcodes

Child Classifications

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G04B 1/00 Driving mechanisms
G04B 11/00 Click devices; Stop clicks; Clutches
G04B 13/00 Gearwork
G04B 15/00 Escapements ( electric or magnetic means for converting oscillatory to rotary motion in electromechanical time-pieces )
G04B 17/00 Mechanisms for stabilising frequency
G04B 18/00 Mechanisms for setting frequency
G04B 19/00 Indicating the time by visual means ( by electric lamps G04C17/02; display arrangements in general G09F)
G04B 21/00 Indicating the time by acoustic means (at preselected times G04B23/00; by electro-acoustic means G04C21/04; )
G04B 23/00 Arrangements producing acoustic signals at preselected times
G04B 25/00 Indicating the time by other means or by combined means (electric or electromechanical indicating G04C )
G04B 27/00 Mechanical devices for setting the time indicating means
G04B 29/00 Frameworks
G04B 3/00 Normal winding of clockworks by hand or mechanically; Winding up several mainsprings or driving weights simultaneously
G04B 31/00 Bearings; Point suspensions or counter-point suspensions; Pivot bearings; Single parts therefor (bearings in general F16C )
G04B 33/00 Calibers
G04B 35/00 Adjusting the gear train, e.g. the backlash of the arbors, depth of meshing of the gears
G04B 37/00 Cases
G04B 39/00 Watch crystals; Fastening or sealing of crystals; Clock glasses
G04B 41/00 Locking or holding devices for pendulums, chimes, or the like, for use during transport
G04B 43/00 Protecting clockworks by shields or other means against external influences, e.g. magnetic fields