the rotating system comprising two or more gyratory masses

Introduced: January 1995

Full Title

Full titles differ between systems:

IPC:

Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion > Suppression of vibrations in rotating systems by making use of members moving with the system > using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon > the rotating system comprising two or more gyratory masses

CPC:

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) > Suppression of vibrations in rotating systems by making use of members moving with the system (by balancing F16F15/22 ; with flywheels acting variably or intermittently F16H ) > using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon ( , F16F15/16 take precedence) > the rotating system comprising two or more gyratory masses

CPC subdivides this area 5x more granularly than IPC with 7 additional codes.

7 codes are CPC-only extensions.

IPC defines codes here since 1995.

Child Classifications

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F16F 15/13107 CPC only CPC only
F16F 15/13114 CPC only CPC only
F16F 15/13121 CPC only CPC only
F16F 15/13128 +1 CPC CPC only CPC only
F16F 15/13142 +1 CPC CPC only CPC only
F16F 15/13157 CPC only CPC only
F16F 15/13164 +3 CPC CPC only CPC only
F16F 15/133 using springs as elastic members, e.g. metallic springs since 1995 +6 CPC IPC+CPC Available in IPC and CPC
F16F 15/139 characterised by friction-damping means since 1995 +3 CPC IPC+CPC Available in IPC and CPC