Mechanical seal

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United States of America Patent

PATENT NO 9927030
SERIAL NO

15022127

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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The object of the present disclosure is to accomplish a stable sealing performance while maintaining the durability. A mating ring (120) includes a sliding portion (121) having a sliding surface that slides against a sealing ring (110) within an end surface on an atmosphere side (A) thereof in an axial direction of a shaft (200), and a retained portion (122) that extends from a radially outward end portion of the sliding portion (121) toward a sealed-fluid side (F) in the axial direction and is retained by a sleeve (130). A mechanical seal (100) includes an annular holder (500) that is fixed to the sleeve (130) receives pressure from an O-ring (140) that receives, from the sealed-fluid side (F) in the axial direction, a fluid pressure (P) of a fluid to be sealed that flew into a space created by a flange portion (132) of the sleeve (130) and the retained portion (122) of the mating ring (120).

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First Claim

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Patent Owner(s)

Patent OwnerAddress
EAGLE INDUSTRY CO LTDMINATO-KU TOKYO 105-8587

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Yoshino, Akira Tokyo, JP 99 1454

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