Title:
SPACE EXPANDER AND OIL RING
Document Type and Number:
WIPO Patent Application WO/2022/219831
Kind Code:
A1
Abstract:
This space expander comprises: an expander body that is annularly formed along the circumferential direction of an oil ring and that urges a pair of segments outward in the radial direction of the oil ring, the expander body including a pair of abutment ends that form an abutment by facing each other and, and the expander body being formed in a wavy shape that is continuous in the circumferential direction when viewed in the radial direction of the oil ring; an expander groove formed in the expander body so as to span between the abutments and extend along the circumferential direction of the oil ring; and a linear member including a fitting part formed in an arc along the circumferential direction of the oil ring, the fitting part being fitted into the expander groove so as to span between the abutments.
Inventors:
ITOH KYOKO (JP)
NAGAKURA HIROYUKI (JP)
AYUZAWA NORIAKI (JP)
KAWAI KIYOYUKI (JP)
NAGAKURA HIROYUKI (JP)
AYUZAWA NORIAKI (JP)
KAWAI KIYOYUKI (JP)
Application Number:
PCT/JP2021/036051
Publication Date:
October 20, 2022
Filing Date:
September 30, 2021
Export Citation:
Assignee:
TPR CO LTD (JP)
International Classes:
F16J9/06; F02F5/00
Domestic Patent References:
| WO2013069349A1 | 2013-05-16 |
Foreign References:
| JPS5685049U | 1981-07-08 | |||
| JPH0338456U | 1991-04-15 | |||
| JPH0614621U | 1994-02-25 | |||
| JPS60195947U | 1985-12-27 | |||
| JPS5334037A | 1978-03-30 |
Attorney, Agent or Firm:
IP FIRM SHUWA (JP)
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