Resources Contact Us Home
Browse by Category: Main > Construction
Class Information
Number: 277/482
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 > Circumferentially spaced separately seated radially acting bias feature
Description: Particular piston ring expander wherein the piston ring expander has peripherally spread apart, individually positioned, resilient members acting in a direction perpendicular to the piston"s axis of reciprocation.

Sub-classes under this class:

Class Number Class Name Patents
277/483 Disposed in socket or about pin 5

Patents under this class:

Patent Number Title Of Patent Date Issued
6575472 System for sealing relatively movable elements Jun. 10, 2003
6502826 Hydraulic cylinder piston seal Jan. 7, 2003
6340160 System for sealing relatively movable elements Jan. 22, 2002
6199868 Piston assembly with piston ring support and sealing member Mar. 13, 2001
5039060 Control valve vibration damper/isolator Aug. 13, 1991
4079949 Integral spring piston ring Mar. 21, 1978

  Recently Added Patents
Load balancing for parallel tasks
Methods and systems for identifying and changing resolutions to cause an aspect ratio of a printed image to match an aspect ratio of image data
Charging seat having cleaning member
Method for growing group III-nitride crystals in supercritical ammonia using an autoclave
Cell surface display, screening and production of proteins of interest
Representations of compressed video
Hybrid fin field-effect transistor structures and related methods
  Randomly Featured Patents
Security device for cassette tape decks or the like
Correction circuits for projection television
Air transfer system for a vehicle-camper outfit
Lithium battery operating at very low temperature
Drilling printed circuit boards and entry and backing boards therefor
Magazine loaded pump action shotgun
Process for preparing aqueous solutions of poly(N-vinyl-.epsilon.-caprolactam) and their use
Rotatable print mechanism for printing on front or back of media
Medical laser treatment device and laser probe for the same
Reinforced box spring frame