Seal Between Relatively Movable Parts (i.e., Dynamic Seal) Patents (Class 277/345)
- Temperature responsive feature (Class 277/359)
- Multiple sealing faces (e.g., double seals, etc.) (Class 277/361)
- Installation, removal, assembly, disassembly, or repair feature (Class 277/370)
- Particular axial biasing feature (Class 277/377)
- Particular secondary mounting seal or driving connection (Class 277/390)
- Eccentric, gyratory, or oscillatory motion (Class 277/398)
- Particular sealing face member configuration (Class 277/399)
- Made of particular material (Class 277/404)
- Introduction, circulation, or removal of fluid (Class 277/408)
- Having installation, removal assembly, disassembly, or repair feature (Class 277/435)
- Piston ring having peripheral radially sealing flexible projection (e.g., piston cup, etc.) (Class 277/436)
- Piston ring surface of dissimilar material or hardness (Class 277/440)
- Rotation limiting feature (i.e., antirotation) (Class 277/445)
- Floating piston ring (Class 277/447)
- Particular piston seat (Class 277/449)
- Piston ring having single piece noncircular or multiturn (e.g., helical, spiral, oblong, elliptical, polygonal, etc.) shape (Class 277/458)
- Piston ring including exposed port, slot, pocket, groove, channel, recess, or bevel (Class 277/459)
- Piston ring displays twisting or torsion (Class 277/466)
- Particular piston ring expander (Class 277/467)
- Sectional piston ring structure (Class 277/489)
- Segmented piston ring (Class 277/493)
- Separate bridging piece for gap in piston ring (Class 277/494)
- Split single piece piston ring having opposed asymmetrical mirrored ends (Class 277/496)
- Split single piece piston ring having other than opposed asymmetrical mirrored ends (Class 277/498)
- And magnetic bias (Class 277/501)
- For valve stem in internal combustion engine (Class 277/502)
- Accommodates gyratory or oscillatory motion (Class 277/503)
- Contained or compressed by gland member in packing box (Class 277/510)
- Segmented ring (Class 277/543)
- Peripheral radially sealing flexible projection (e.g., lip seal, etc.) (Class 277/549)
- Having circumferentially adjustable biasing element (Class 277/578)
- Having floating ring or bushing (i.e., circumferentially contacting) (Class 277/579)
- Extrusion preventing (i.e., antiextrusion) structure (Class 277/584)
- Elongated sleeve or bushing (Class 277/585)
- Seated in groove having stepped walls (Class 277/586)
- Seated in groove having oblique wall (Class 277/587)
- Radially backed by resilient or elastomeric member (Class 277/589)