Global Patent Index - EP 1038128 A1

EP 1038128 A1 2000-09-27 - AN IMPROVED PISTON RING

Title (en)

AN IMPROVED PISTON RING

Title (de)

KOLBENRING

Title (fr)

SEGMENT DE PISTON AMELIORE

Publication

EP 1038128 A1 (EN)

Application

EP 98951900 A

Priority

  • SE 9801970 W
  • SE 9704581 A

Abstract (en)

[origin: WO9932812A1] The invention concerns an arrangement in piston rings (1, 1a) of the kind, which are formed with a gap (6, 6a) and which are arranged in their respective one of annual ring-receiving grooves (4) formed in combustion-engine pistons. The end portions (2, 3; 2a, 3a) of the piston ring (1, 1a) are formed with width dimensions that are smaller than the width dimensions (b) of the piston ring (1, 1a), and are arranged in overlapping relationship in such a manner that the first end portion (2, 2a) extends between the inner face of the second end protion (3, 3a) and the bottom of the piston-ring groove (4). The second end protion (3, 3a) extends externally of the first end portion (2, 2a), forming said gap (6, 6a) in the ring between its end-edge face (5, 5a) and the transitional area where said first-mentioned end portion (2, 2a) widens to its full width.

IPC 1-7 (main, further and additional classification)

F16J 9/08

IPC 8 full level (invention and additional information)

F02F 5/00 (2006.01); F16J 9/08 (2006.01); F16J 9/14 (2006.01)

CPC (invention and additional information)

F16J 9/14 (2013.01)

Citation (search report)

See references of WO 9932812A1

Designated contracting state (EPC)

CH DE DK FI GB LI

EPO simple patent family

WO 9932812 A1 19990701; EP 1038128 A1 20000927; JP 2001527197 A 20011225; NO 20002862 A 20000605; NO 20002862 D0 20000605; SE 510108 C2 19990419; SE 9704581 D0 19971209; SE 9704581 L 19990419

INPADOC legal status


2004-12-15 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20040608

2001-07-18 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: KONCENTRA VERKSTADS AB

- Ref Legal Event Code: RAP1

2000-09-27 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000519

2000-09-27 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): CH DE DK FI GB LI