Title:
The piston ring for internal-combustion engines
Document Type and Number:
Japanese Patent JP6231021
Kind Code:
B2
Abstract:
A piston ring assembly for sealing a cylinder wall to a piston body is provided. The piston ring assembly includes a plurality of rings stacked in an axial direction one in abutment with another. Each ring has an inner face and an outer face. The piston ring assembly also includes a spring which substantially circumferentially surrounds the stacked rings and abuts the outer faces of the rings. The spring biases the stacked rings in a radially inward direction for sealing the inner faces of the rings against the piston body. The spring may be of a strip of material bent into a serpentine pattern when in an at rest condition to apply the biasing force against the piston body.
Inventors:
Blair Matthew, Genes
Matthew Ryan, Pedigo
Radonzel, Ronald Nelson
Matthew Ryan, Pedigo
Radonzel, Ronald Nelson
Application Number:
JP2014557804A
Publication Date:
November 15, 2017
Filing Date:
February 15, 2013
Export Citation:
Assignee:
FEDERAL-MOGUL LLC
International Classes:
F16J9/00; F02F5/00
Domestic Patent References:
| JP51046654A | ||||
| JP6249341A |
Foreign References:
| US20100319661 |
Attorney, Agent or Firm:
Fukami patent office
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