Resinous shroud and manufacturing method of the same

Rotary kinetic fluid motors or pumps – Working fluid passage or distributing means associated with... – Specific casing or vane material

Reexamination Certificate

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C415S220000

Reexamination Certificate

active

08070430

ABSTRACT:
A resinous shroud includes a resinous wall portion formed between a portion corresponding to a casing and a portion corresponding to a retaining member in a shroud portion when a resin material is filled from a gate portion. Thereby, a flow of the resin material to the portion corresponding to the casing from a portion corresponding to the gate portion can be dispersed by the resinous wall portion. Alternatively, an extended resinous wall portion may be formed in place of the resinous wall portion. Therefore, welds generated at the casing can be made small, and cambers generated at the casing can be suppressed.

REFERENCES:
patent: 5427502 (1995-06-01), Hudson
patent: 6938727 (2005-09-01), Xia
patent: 7008180 (2006-03-01), Fujimori et al.
patent: 2002/0150478 (2002-10-01), Aoki
patent: 2003/0094010 (2003-05-01), Katatani et al.
patent: 2006/0266309 (2006-11-01), Lang et al.
patent: 10-82319 (1998-03-01), None
patent: 10-238825 (1998-09-01), None
patent: 2005-81611 (2005-03-01), None
patent: 2007-327442 (2007-12-01), None
Office action date Feb. 16, 2010 in corresponding Japanese Application No. 2007-316289.

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