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Patent Searching and Data


Title:
METHOD FOR MANUFACTURING SEAL RING, AND SEAL RING
Document Type and Number:
WIPO Patent Application WO/2020/157834
Kind Code:
A1
Abstract:
This method for manufacturing a seal ring (10) includes: a base ring forming step of using a resin as a material to form a base ring (30) in which an abutment (47) having an overlap in at least an axial direction exists in a gas-tight manner between a one-end side engaging portion (45) on one end side in a circumferential direction and an other-end side engaging portion (46) on the other end side in the circumferential direction; a cavity arrangement step of arranging the base ring (30) in a cavity (101) of a mold (100); a tension ring setting step of setting, in a ring arrangement portion (32) of the base ring (30), a metal tension ring (60) having a gap portion (61) in a position corresponding to the one-end side engaging portion (45) and the other-end side engaging portion (46); and a sealing step of causing liquid resin to flow into the cavity (101) to enclose the tension ring (60) by forming a lid portion (50), and to form retaining portions (36), (51) for preventing the base ring (30) and the lid portion (50) from detaching from one another, between the base ring (30) and the lid portion (50).

More Like This:
JPS6198949PISTON RING
WO/2015/115153PISTON RING
Inventors:
HAMA MASAHIDE (JP)
KOYAMA TETSUJI (JP)
OGA TEPPEI (JP)
Application Number:
PCT/JP2019/003005
Publication Date:
August 06, 2020
Filing Date:
January 29, 2019
Export Citation:
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Assignee:
TPR CO LTD (JP)
International Classes:
F16J9/26; F16J9/16
Foreign References:
JPS57194956U1982-12-10
JP2017180726A2017-10-05
JPH0656565U1994-08-05
JPS5516526U1980-02-01
JPS6220262U1987-02-06
JP2010181018A2010-08-19
JPH0158863U1989-04-13
Other References:
See also references of EP 3715678A4
Attorney, Agent or Firm:
IAT WORLD PATENT LAW FIRM (JP)
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