IPC Main Group
F16J 9/00 Piston-rings, seats therefor; Ring sealings of similar construction in general
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- Class:
- ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- Subclass:
- PISTONS; CYLINDERS; PRESSURE VESSELS IN GENERAL; SEALINGS
Related Keywords
piston RING(S)
7 direct subcodes
Child Classifications
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- F16J 9/02 L-section rings
- F16J 9/04 Helical rings
- F16J 9/06 using separate springs expanding the rings; Springs therefor
- F16J 9/08 with expansion obtained by pressure of the medium
- F16J 9/1 Special members for adjusting the rings
- F16J 9/12 Details
- F16J 9/26 characterised by the use of particular materials