Cut-off end surface improvement

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9120143
APP PUB NO 20140196518A1
SERIAL NO

13741557

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A method of improving the surface finish of a sheared end face of a cylindrical blank in a progressive forming machine comprising deforming the end face out of its original as sheared transverse plane into a first shape concentric with the axis of the blank that slightly departs from the original plane a distance that increases with proximity to the axis of the blank, thereafter deforming the end face from the first shape into a second shape in a direction opposite a direction the first shape was displaced from the original shear plane, the second shape slightly departing from a transverse plane a distance that increases with proximity to the axis of the blank.

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Patent Owner(s)

Patent OwnerAddress
NATIONAL MACHINERY LLC161 GREENFIELD STREET TIFFIN OH 44883

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Carper, Jeffrey W Tiffin, US 11 46

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