Pump housing and a manufacturing method therefor

Details Pump housing and a manufacturing method therefor Pump housing and a manufacturing method therefor

1996-08-21

1999-09-07

Lopez, F. Daniel

Rotary kinetic fluid motors or pumps

Working fluid passage or distributing means associated with...

Specific casing or vane material

415204, 415206, 4152141, 4152151, 415915, F01D 102

Patent

active

059476826

ABSTRACT:
A pump housing and manufacturing method therefor includes a primary molding for injecting halves of the pump housing and a secondary molding for assembling the primary molds to each other to be installed to the interior of a secondary metal mold and secondarily-molding the outer surface of the pump housing without requiring core fabrication, installation and removal steps of the injection molding. Thus, the core fabrication and core removal steps heretofore required for an inlet or undercut are unnecessary for enabling swift mass production and lowering difficulty of working to make the quality consistent and decrease inferior products, thereby reducing the manufacturing cost.

REFERENCES:
patent: 3412721 (1968-11-01), Thompson
patent: 4179238 (1979-12-01), Ashworth
patent: 5756029 (1998-05-01), Nakamichi et al.

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