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US 11,305,478 B2Granted
Door assembly for use on a utility truck
AssigneeAltec Industries, Inc.
InventorsRyan J. McKinney, Brad Harju
Life of this patent
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Abstract
A multi-sheet component for a utility vehicle that includes at least one gap between at least two of the sheets, thereby providing a component that enhances worker safety by increasing component stiffness and reducing component thickness. The component is manufactured through multi-sheet thermoforming and uses a conical frustum corrugation to increase stiffness.
Claims4
A method for manufacturing a multi-sheet component consisting of a first sheet and a second sheet for a utility vehicle, comprising:
- thermoforming the first sheet;
- inserting a core material between the first sheet and the second sheet;
- and
- manufacturing the second sheet onto the first sheet and the core material using lamination and/or 3D printing;
- wherein the multi-sheet component is a hinged door;
- wherein the core material is removed after manufacturing the second sheet;
- wherein the first sheet and the second sheet are separated by at least one gap;
- wherein a corrugation on the first sheet extends into the component to meet the second sheet, thereby creating a mounting location on the first sheet to mount conductive hardware through;
- wherein the mounting location is recessed into the first sheet, thereby shielding the conductive hardware from contacting a conductor greater than the width of the corrugation on the first sheet;
- and
- wherein the first sheet and/or the second sheet is made from dielectric materials including reinforced thermosets, unreinforced thermosets, reinforced thermoplastics, and/or unreinforced thermoplastics.
8 more elements
Dependencies are inferred from the claim text.