Method for stamping stepper motor laminations
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 3, 1991
Grant Date -
N/A
app pub date -
Feb 5, 1990
filing date -
Feb 5, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Metal parts requiring sharply-defined, accurate corners are formed in a two-step process. In the first step, first openings are made in a thin sheet of material, at least one edge of the first opening forming one edge of the desired sharply-defined corner. In the second step, a second opening is formed, wherein one edge of the second opening intersects the edge of the first opening at a predetermined angle. A sharp corner is formed at the intersection of these edges. In a preferred embodiment of the invention, the method is used as an improved method of forming single laminae and stacked laminae for stators and rotors of electric motors; in this embodiment a plurality of first openings are made in an annular array.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully