Invention Grant
- Patent Title: Segmented core and method for molding an impeller
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Application No.: US14768277Application Date: 2014-02-04
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Publication No.: US10016808B2Publication Date: 2018-07-10
- Inventor: Martin Vestermark Vad
- Applicant: GRUNDFOS HOLDING A/S
- Applicant Address: DK Bjerringbro
- Assignee: GRUNDFOS HOLDING A/S
- Current Assignee: GRUNDFOS HOLDING A/S
- Current Assignee Address: DK Bjerringbro
- Agency: McGlew and Tuttle, P.C.
- Priority: EP13155624 20130218
- International Application: PCT/EP2014/052142 WO 20140204
- International Announcement: WO2014/124837 WO 20140821
- Main IPC: B22C9/10
- IPC: B22C9/10 ; F04D29/22 ; B22F3/22 ; B22F7/06 ; B29C33/00 ; B29C33/76 ; B29C45/40 ; B29L31/08

Abstract:
A segmented core (1) for molding of an impeller (12), especially a pump impeller, includes at least three segments (2). All of the segments (2) have the same form and each segment (2) has connecting devices (3, 3′) for connecting the segment (2) with the adjacent segments (2). A method for molding an impeller (12) includes the steps of: providing a molding tool (14), providing a core (1) including at least three identical segments (2), which include the connection portions (3, 3′) for connecting the segment (2) with the adjacent segments (2); assembling of the core (1); placing the core (1) in the molding tool (14); molding the impeller (12), ejecting the core (1) and the impeller (12) out of the molding tool (14); and removing the core (1) from the impeller (12).
Public/Granted literature
- US20150375294A1 SEGMENTED CORE AND METHOD FOR MOLDING AN IMPELLER Public/Granted day:2015-12-31
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