Resources Contact Us Home
Browse by Category: Main > Construction
Class Information
Number: 277/476
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 > Particular piston ring expander > Annular expander nested in annular groove of the piston ring > Inclined or beveled groove contacting expander having dissimilar contour
Description: Particular annular piston ring expander provides an annular surface having a profile other than a slanting or sloping surface of the annular recess of the piston ring.

Patents under this class:

Patent Number Title Of Patent Date Issued
6173960 Rod seal apparatus for cylinder assembly Jan. 16, 2001
6116204 Oil scraper piston ring Sep. 12, 2000
5964467 Oil control ring of two piece type for internal combustion engine Oct. 12, 1999
5295696 Combined oil ring Mar. 22, 1994
5028055 Substantially zero leakage path sealing assembly with additional line to line ring Jul. 2, 1991
4917390 Hydraulic seal assembly Apr. 17, 1990
4522412 Oil ring with coil expander Jun. 11, 1985
4045036 Piston oil control ring Aug. 30, 1977

  Recently Added Patents
Semiconductor device and method of manufacturing the same
Azole derivatives, methods for producing the same, intermediate thereof, agro-horticultural agents
Method to dynamically tune precision resistance
Switching module and switching synchronization system
Agglutination judgment method
Semiconductor device
Tablet computer
  Randomly Featured Patents
Fire alarm system which distinguishes between different types of smoke
Procedure for the numerical control of a workpiece on a grinding machine
Wireless keyboard
Method of preparing non-composite, thermoplastic, high-temperature-resistant rocket motor cases
Trigger forward pivot limit for a trigger sprayer
Methods and apparatus for scheduling peer to peer traffic in cellular networks
Image processing apparatus capable of displaying only alterable process items
Mutations in nucleic acid molecules encoding 11-CIS retinol dehydrogenase, the mutated proteins, and uses thereof
Vehicle occupant weight estimation apparatus having fluid-filled seat bladder