DIFF Subgroup
F16F 1/40 consisting of a stack of similar elements separated by non-elastic intermediate layers
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Springs > made of plastics, e.g. rubber; made of material having high internal friction > consisting of a stack of similar elements separated by non-elastic intermediate layers
CPC:
Springs (working with fluid F16F5/00, F16F9/00) > made of rubber or other material having high internal friction, > consisting of a stack of similar elements separated by non-elastic intermediate layers
CPC subdivides this area 3x more granularly than IPC with 2 additional codes.
2 codes are CPC-only extensions.
IPC defines codes here since 1995.
Child Classifications
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- F16F 1/41 the spring consisting of generally conically arranged elements since 1995 IPC+CPC Available in IPC and CPC