DIFF Subgroup
H01H 1/50 Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Contacts > Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
CPC:
Contacts (liquid contacts H01H29/04) > Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
CPC subdivides this area 3x more granularly than IPC with 4 additional codes.
4 codes are CPC-only extensions.
Note: 2 CPC extensions are marked as secondary classification only.
Child Classifications
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