Piston Ring Or Piston Ring Expander Or Seat Therefor Patents (Class 277/434)
- Separate and other than metal (Class 277/468)
- Bias limiting feature (Class 277/469)
- Adjustable loading feature (Class 277/470)
- Thermal expansion feature (Class 277/471)
- Annular expander nested in annular groove of the piston ring (Class 277/472)
- Slotted or undulating circular band including inclined or axially facing seat for the piston ring (Class 277/477)
- Circumferentially spaced separately seated radially acting bias feature (Class 277/482)
- Radially extending tongue formed from expander (Class 277/484)
- Undulating periphery providing axially extending face against inner perimeter of the piston ring (Class 277/485)
- Bias feature adjoining opposed ends of split or segmented piston ring (Class 277/486)
- Segmented (Class 277/487)
- For axially adjacent piston rings (Class 277/488)