Rotary kinetic fluid motors or pumps – Working fluid passage or distributing means associated with... – Passage or casing attached removable liner or wear member
Reexamination Certificate
2007-12-11
2007-12-11
Look, Edward K. (Department: 3745)
Rotary kinetic fluid motors or pumps
Working fluid passage or distributing means associated with...
Passage or casing attached removable liner or wear member
C415S173100
Reexamination Certificate
active
11413272
ABSTRACT:
The present invention relates to a sealing arrangement for attaching a side plate often used with a pump volute of a centrifugal pump and an attachment screw used therewith. A characterizing feature of the sealing arrangement for attaching the side plate of a centrifugal pump, comprising at least a pump volute (10) and a side plate (130) with attachment screws (132) and flanges (164) of the screws (132) arranged in communication with the volute (10) or the cover of the casing, is that an annular seal (180) is arranged between the screw (132) and the volute or the cover of the casing.
REFERENCES:
patent: 3032259 (1962-05-01), Jassniker
patent: 3130678 (1964-04-01), Chenault
patent: 5921748 (1999-07-01), Frater
patent: 6464454 (2002-10-01), Kotkaniemi
Ahlroth Jussi
Lehtonen Jorma
Look Edward K.
Sulzer Pumpen AG
Townsend and Townsend / and Crew LLP
White Dwayne J
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