Title:
Piston ring for internal combustion engine
Document Type and Number:
Japanese Patent JP6345124
Kind Code:
B2
Abstract:
A piston assembly including a piston body and a piston ring is provided. The piston body has a skirt, a portion of which extends circumferentially continuously and has a skirt diameter. The piston ring has a ring body which extends through at least one revolution in a generally helical shape when in a relaxed condition. The ring body also has an inner face, and when in the relaxed condition, the inner face presents a ring diameter which is less than the skirt diameter. The ring body circumferentially surrounds the skirt of the piston body, thereby causing the inner face to be biased into engagement with the outer surface of the circumferentially continuous portion of the skirt of the piston body to establish a dynamic seal between the ring body and the piston body.
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Inventors:
Blair Matthew, Genes
Matthew Ryan, Pedigo
Cantra, Troy
Matthew Ryan, Pedigo
Cantra, Troy
Application Number:
JP2014557814A
Publication Date:
June 20, 2018
Filing Date:
February 15, 2013
Export Citation:
Assignee:
FEDERAL-MOGUL LLC
International Classes:
F16J9/04; F02F5/00
Domestic Patent References:
| JP4071863U |
Foreign References:
| US1871820 | ||||
| DE2036721A1 |
Attorney, Agent or Firm:
Fukami patent office