SPHERICAL BAND-SHAPED SEAL AND ITS MANUFACTURE

Japanese Patent JP3812036

B2

PROBLEM TO BE SOLVED: To provide a spherical band-shaped seal and its manufacturing method, which is applied to a spherical pipe fitting for exhaust pipe of automobile, involves less oxidative wear even at a high temp. between 600 and 700°C, emits no abnormal frictional noise, excels in the sealing performance, and satisfies the function required of a seal.
SOLUTION: A spherical band-shaped seal 55 includes a cylindrical inner surface 52 defining a through hole 51 in the center, an outer surface 53 in the form of a partially convex spherical surface, and a ring-shaped end face 54 on the large diameter side of the outer surface 53, wherein inside of the part from the inner surface 52 to the outer surface 53, a heat resistant sheet material prepared by lining the whole surface of a heat resistant sheet with a heat resistant film and a reinforcing material 9 consisting of wire mesh are compressed and entangled so as to generate a structural consolidation. The outer surface 53 consists of an exposed surface of an outside layer 56 consisting of heat resistant film, and the outside layer 56 is furnished with a reinforcing material 9 consisting of wire mesh consolidated with the outside layer 56, and the outer surface 53 where the outside surface 56 and reinforcing material 9 consisting of wire mesh mixedly included in and consolidated with the outside layer 56 are exposed is formed in a flat and smooth plane.

Kajima Kazutsugu

JP4168797A

August 23, 2006

February 10, 1997

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OILES CORPORATION

F16J15/12; C09K3/10; F01N13/08; (IPC1-7): F16J15/12; C09K3/10; F01N7/08

JP6123362A
JP5263944A
JP7187851A
JP5092574U
JP55136112A
JP2215916A
JP1120483A
JP1299393A
JP44023966B1
JP54076759A
JP63295412A
JP4370194A
JP4076258A

Takeshi Takada

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