Retrogression heat treatment

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United States of America Patent

PATENT NO 8857037
APP PUB NO 20110283518A1
SERIAL NO

13136386

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Abstract

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A method for producing a product includes the steps of taking heated and cooled extrusion, preferably aluminum, and reheating a selected area of the extrusion. There is the step of requenching the extrusion. There is the step of forming the reheated area into a desired shape. A method for producing a ladder.

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Patent Owner(s)

  • WERNER CO.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kelly, Richard M Hermitage, US 24 59

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