Resources Contact Us Home
Browse by Category: Main > Construction
Class Information
Number: 277/492
Name: Seal for a joint or juncture > Seal between relatively movable parts (i.e., dynamic seal) > Piston ring or piston ring expander or seat therefor > Sectional piston ring structure > C, l, t, u, v, or z cross-sectional profile > Three or more sections
Description: Sectional piston ring wherein the sectional piston ring has at least three component rings.

Patents under this class:

Patent Number Title Of Patent Date Issued
6419234 Oil sealing ring Jul. 16, 2002
5921553 Sealing ring assembly for a single sealing ring piston Jul. 13, 1999
4090719 Packing assembly May. 23, 1978

  Recently Added Patents
Release layer
Method for evaluating performance characteristics of dental curing lights
Method of manufacturing semiconductor device and semiconductor device
Enhanced telephony services
Circuit device for preventing radiation emission in portable terminal with two cameras
Egg separator
System and method for computational unification of heterogeneous implicit and explicit processing elements
  Randomly Featured Patents
Sensing device for sensing a position relative to a surface
Animal head mask
Three-phase vehicular generator construction
Intermittent paper feed mechanism
Blood pressure measuring apparatus
Transfer unit used with image forming apparatus
Insulated-gate thyristor
Image forming apparatus with transfer material guide
Method and system for testing cellular network integrity using telematics
Catalyst and method of steam reforming