Method and apparatus for treating ladder rungs for forming assembly with ladder rails

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United States of America Patent

PATENT NO 4959107
SERIAL NO

07331822

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Abstract

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A method and apparatus for treating preselected areas of metallic ladder rungs wherein such metallic spaced rungs are moved in a path substantially normal to the longitudinal axes of the rungs with preselected areas of the spaced rungs passing through a controlled longitudinally extending heating zone to heat such preselected areas to a desired annealing temperature.

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Patent Owner(s)

Patent OwnerAddress
LOUISVILLE LADDER INC7765 NATIONAL TURNPIKE UNIT 190 LOUISVILLE KY 40214

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bogart, Bruce E Floyd, IN 5 107
Krebs, John L Washington, WI 1 7
Schmitt, Thomas J Jefferson, KY 20 140
Wallick, Jr Claude R Jefferson, KY 9 72

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