Method for fabricating helical core

Details Method for fabricating helical core Method for fabricating helical core

2007-05-22

2007-05-22

Mullins, Burton S. (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S256000, C029S596000

Reexamination Certificate

active

11302432

ABSTRACT:
A method of fabricating a helical core includes: a stamping step of blanking a pair steel plate cores in two rows from an electrical steel sheet to form a pair of bases confronting each other in a width direction and teeth protruding from each of the bases to alternately cross with each other; providing at least one ejector concavity to the teeth so as to facilitate separation of the steel plate cores blanked in two rows from the electrical steel sheet; and a winding step of helically stacking the steel plate core from a bottom layer to a top layer to configure a multi-layer structure.

REFERENCES:
patent: 1920354 (1933-08-01), Carpenter
patent: 3577851 (1971-05-01), Detheridge et al.
patent: 3708706 (1973-01-01), Akiyama et al.
patent: 3842493 (1974-10-01), Ohuchi et al.
patent: 4102040 (1978-07-01), Rich
patent: 4364169 (1982-12-01), Kawano et al.
patent: 4613780 (1986-09-01), Fritzsche
patent: 4940913 (1990-07-01), Fritzsche
patent: 5359249 (1994-10-01), Tanaka
patent: 5382859 (1995-01-01), Huang et al.
patent: 5457350 (1995-10-01), Sakamaki et al.
patent: 5489811 (1996-02-01), Kern et al.
patent: 6181047 (2001-01-01), Nitta
patent: 6313558 (2001-11-01), Abukawa et al.
patent: 6559572 (2003-05-01), Nakamura
patent: 6979930 (2005-12-01), Harada et al.
patent: 2004/0119363 (2004-06-01), Tanaka et al.
patent: 2004/0201304 (2004-10-01), Niimi et al.
patent: 2005/0073211 (2005-04-01), Lee
patent: 11299136 (1999-10-01), None

Affiliated with

Also associated with

Rating

Method for fabricating helical core does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for fabricating helical core, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for fabricating helical core will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3816468