SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION

Introduced: September 1968

Description

F16F covers mechanical devices and systems designed to store elastic energy, absorb impacts, and attenuate vibrations in machinery and structures. This subclass encompasses springs (helical, leaf, torsion, and other types), shock absorbers, dampers, and vibration isolation systems used across diverse applications from automotive suspension to industrial equipment. The classification includes both the devices themselves and functional mechanisms for energy dissipation, whether achieved through mechanical deformation, friction, or fluid resistance. Related applications in sealing, bearing design, and vibration control in specific machines are typically classified in their respective technical fields rather than F16F.

Of 18 combined children, 8 exist in both systems.

9 codes are CPC-only extensions, 1 exist only in IPC.

Note: 9 CPC extensions are marked as secondary classification only.

7 shared codes have differing titles between IPC and CPC.

Child Classifications

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F16F 1/00 Springs (working with fluid F16F5/00, F16F9/00) IPC+CPC Available in IPC and CPC
F16F 11/00 Vibration-dampers or shock-absorbers working with both friction and a damping fluid IPC only IPC only
F16F 13/00 Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs (F16F5/00, take precedence) +2 CPC IPC+CPC Available in IPC and CPC
F16F 15/00 Suppression of vibrations in systems ( ; vehicle seat suspension devices B60N2/50; ); Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion ( ; testing static and dynamic balance of machines or structures G01M1/00) +2 CPC IPC+CPC Available in IPC and CPC
F16F 2222/00 Special physical effects, e.g. nature of damping effects 2nd only +7 CPC CPC only CPC only
F16F 2224/00 Materials; Material properties 2nd only +3 CPC CPC only CPC only
F16F 2226/00 Manufacturing; Treatments 2nd only +2 CPC CPC only CPC only
F16F 2228/00 Functional characteristics, e.g. variability, frequency-dependence 2nd only +7 CPC CPC only CPC only
F16F 2230/00 Purpose; Design features 2nd only +35 CPC CPC only CPC only
F16F 2232/00 Nature of movement 2nd only +4 CPC CPC only CPC only
F16F 2234/00 Shape 2nd only +4 CPC CPC only CPC only
F16F 2236/00 Mode of stressing of basic spring or damper elements or devices incorporating such elements 2nd only +6 CPC CPC only CPC only
F16F 2238/00 Type of springs or dampers 2nd only +2 CPC CPC only CPC only
F16F 3/00 Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic ( ; if including fluid springs F16F5/00, F16F13/00) IPC+CPC Available in IPC and CPC
F16F 5/00 Liquid springs in which the liquid works as a spring by compression, e.g. combined with throttling action; Combinations of devices including liquid springs IPC+CPC Available in IPC and CPC
F16F 6/00 Magnetic springs ; Fluid magnetic springs +1 CPC IPC+CPC Available in IPC and CPC
F16F 7/00 Vibration-dampers; Shock-absorbers (using fluid F16F5/00, F16F9/00; specific for rotary systems F16F15/10 ) +1 CPC IPC+CPC Available in IPC and CPC
F16F 9/00 Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium (F16F5/00 takes precedence; connection of valves to inflatable elastic bodies B60C29/00; ) +2 CPC IPC+CPC Available in IPC and CPC