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US 2015/0020927 A1Published application
Retrogression Heat Treatment
AssigneeWerner Co.
InventorRichard M. Kelly
Life of this patent
Estimating the term…
Abstract
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.
Claims20
A method for producing a product comprising the steps of:
- taking heated and cooled extrusion and reheating a selected area of the extrusion;
- requenching the extrusion;
- forming the reheated area into a desired shape;
- and
- attaching the extrusion at the area directly with a member made of a different material than the extrusion.
2 more elements
A method for producing a product comprising the steps of:
- taking heated and cooled aluminum extrusion and reheating a selected area of the extrusion to afford a 20% or more improvement in material ductility relative to the pre-reheated but cooled extrusion, assisting forming operations used to assemble or join with other components of the same material or in combination with differing materials in the product;
- requenching the extrusion;
- and
- forming the reheated area into a desired shape.
1 more element
A method for producing a product comprising the steps of:
- taking heated and cooled aluminum extrusion and reheating a selected area of the extrusion to afford a 20% or more improvement in material ductility relative to the pre-reheated but cooled extrusion, assisting forming and assembly operations to complete joints by providing joining geometries for traditional fasteners;
- requenching the extrusion;
- and
- forming the reheated area into a desired shape.
1 more element
A method for producing a ladder comprising the steps of:
- taking heated and cooled aluminum extrusion and reheating a selected area of the extrusion;
- requenching the extrusion;
- forming the reheated area into a rung;
- and
- attaching the rung to a rail.
2 more elements
Dependencies are inferred from the claim text.