Rotary kinetic fluid motors or pumps – With lubricating – sealing – packing or bearing means having... – For shaft sealing – packing – lubricating or bearing means
Reexamination Certificate
2006-10-31
2006-10-31
Look, Edward K. (Department: 3745)
Rotary kinetic fluid motors or pumps
With lubricating, sealing, packing or bearing means having...
For shaft sealing, packing, lubricating or bearing means
C415S216100, C415S229000
Reexamination Certificate
active
07128523
ABSTRACT:
A drainage pump has a pump part in which blades mounted on a rotary shaft are arranged in a pump casing and an underwater bearing unit which uses pumped water mixed with hard particles as a lubricant and has a sliding bearing for journaling the rotary shaft. A portion of the rotary shaft journaled by the sliding bearing is formed of a cemented carbide material and a shaft journaling surface of the sliding bearing is formed of a thermoplastic resin material to be embedded with hard particles.
REFERENCES:
patent: 4664595 (1987-05-01), Tsuji et al.
patent: 5700093 (1997-12-01), Hiramatsu et al.
patent: 5792717 (1998-08-01), Takayama
patent: 6276898 (2001-08-01), Elliott
patent: 6406184 (2002-06-01), Orndorff et al.
patent: SHO 62-194919 (1986-06-01), None
patent: 06-147228 (1994-05-01), None
patent: 06-346887 (1994-12-01), None
patent: 10-252758 (1998-09-01), None
patent: 2002-147459 (2002-05-01), None
Aizawa Kouji
Iwasaki Minoru
Kishimoto Shigeru
Tagawa Tomohiko
Takagi Kaname
Hanan Devin
Hitachi Industries Co., Ltd.
Look Edward K.
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