Title:
A PISTON RING WITHOUT END CLEARANCE AND A PISTON WITH SAID RING
Document Type and Number:
WIPO Patent Application WO/2008/017195
Kind Code:
A1
Abstract:
A completely sealed piston ring without end clearance and a piston with said ring are
disclosed, the perimeter of the external diameter of the piston ring is longer than
that of the internal diameter of the cylinder, the dimension (T) exceeded by the
piston ring is the same as that of the superposition portion of the piston ring’s
open ends, the two ends in the superposition portion form the complementary diagonal
cutoff of the piston ring in axial direction, the thickness of the superposition portion
is the same as that of the piston ring, a positioning notch (g) preventing rotating
is provided in the inner cylinder face of the pistonring close to one end, a positioning
pin (3) corresponding to the positioning notch is inserted into the bottom of
the piston ring notch in a direction at an angle of about 30~40 degrees with respect
to the piston pin, and the positioning pins (3) in ring notches(g) are positioned
at an angle of 180 degrees with each other so as to prevent the cutoffs of the piston
rings overlapping.
Inventors:
YANG YINGJIE (CN)
Application Number:
PCT/CN2006/001837
Publication Date:
February 14, 2008
Filing Date:
July 25, 2006
Export Citation:
Assignee:
YANG YINGJIE (CN)
International Classes:
F16J9/16; F02F3/00; F02F5/00; F04B53/02; F04B53/14; F16J1/00
Foreign References:
| CN1916448A | 2007-02-21 | |||
| JPH11325259A | 1999-11-26 | |||
| US5072653A | 1991-12-17 | |||
| JPH09159026A | 1997-06-17 | |||
| CN2399514Y | 2000-10-04 |
Attorney, Agent or Firm:
KELONG INTERNATIONAL INTELLECTUAL PROPERTY AGENT LTD. (Horizon International TowerNo. 6 Zhichun Road,Haidian District, Beijing 8, CN)
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