SPHERICAL ANNULAR SEAL MEMBER, AND METHOD FOR PRODUCING SAME

WIPO Patent Application WO/2012/042712

A1

A spherical annular seal member (39) is provided with a spherical annular base body (37) defined by annular end faces (35, 36), and an outer layer (38) integrally formed with the spherical annular base body (37). The spherical annular base body (37) is equipped with a reinforcing material (5) formed from a wire net, and a heat-resistance material (6) containing expanded graphite that was compressed. The outer layer (38) is equipped with: a base layer (46) containing a compressed reinforcing material (15) formed from a wire net, and a heat-resisting material (14) which fills in the mesh of the wire net of reinforcing material (15), has a surface (52) for forming an outer-layer middle layer surface (42) along with the surface (41) of reinforcing member (15), and contains expanded graphite that was compressed; and a fired slide layer (40) formed from a molten fluororesin composition on the outer-layer middle layer surface (42) of the base layer (46). The externally-exposed surface (44) of the outer layer (38) is formed from the smooth surface (45) of the fired slide layer (40).

KODA YASUHIKO (JP)
TAKAHASHI MASANORI (JP)
KAIDA HIDETOSHI (JP)
KUROSE KOUHEI (JP)
OKI EIJI (JP)

PCT/JP2011/003916

April 05, 2012

July 07, 2011

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OILES INDUSTRY CO LTD (JP)
KODA YASUHIKO (JP)
TAKAHASHI MASANORI (JP)
KAIDA HIDETOSHI (JP)
KUROSE KOUHEI (JP)
OKI EIJI (JP)

F16J15/12; F01N13/08; F16J15/10; F16L27/06

WO2009078165A1	2009-06-25
WO2009072295A1	2009-06-11

JP2006322601A	2006-11-30
JP2003206739A	2003-07-25
JPS5476759A	1979-06-19
JPH0448973B2	1992-08-10
JPS5834230A	1983-02-28
JPH06123362A	1994-05-06

See also references of EP 2623822A4

TAKADA, TAKESHI (JP)
Takeshi Takada (JP)

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