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
Touch-sensitive device and communication device
Performance metrics processing for anticipating unavailability
Computer system for routing package deliveries
Methods of fabricating semiconductor device
MOS transistor having combined-source structure with low power consumption and method for fabricating the same
Activated carbon cryogels and related methods
Method and apparatus for policy-based network access control with arbitrary network access control frameworks
  Randomly Featured Patents
Coupling shock resistant (csr) coupler
Stabbing board assembly
Barbecue grill with cleaning bar
Electrostatic wire for stabilizing a charged particle beam
Satellite tracking antenna apparatus
Heating appliance
Methods of forming a plurality of transistor gates, and methods of forming a plurality of transistor gates having at least two different work functions
Burst phase correcting circuit
Security system with membrane switches to detect binary code on mechanical key
Motion converting mechanism for an exercise machine