Combined piston

Combined piston

  • CN 1,804,385 A
  • Filed: 01/17/2006
  • Published: 07/19/2006
  • Est. Priority Date: 01/17/2006
  • Status: Active Application
First Claim
Patent Images

1. , a kind of built-up piston, comprise piston (1), annular groove (2) and be arranged on annular groove (2) interior piston ring (3) and piston collar extension (4), it is characterized in that in the annular groove up and down (2) of described piston (1) single piston ring (31) being set, in the middle annular groove (2) single piston ring (31) or many piston rings (32) are set, described piston collar extension (4) by several angle mutually staggered in piston ring groove (2) in and piston collar extension (4) all depart from the setting of piston pin hole (12) axis several angle, set a device (5) in the annular groove (2) of described piston collar extension (4).

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