The Folding Roof Truss
2006
Universal Forest Products (UFP Industries)
Universal Forest Products began in Grand Rapids in 1955 selling lumber to builders of factory-made houses. Half a century later it patented a hinged truss that lets a manufactured home's steep roof fold down for the highway.
John Sirowatka for Universal Forest Products, double-hinge plate and foldable truss, U.S. Patent 7,131,243 (filed 2003, granted 2006). Public domain.

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William F. Grant
william-f-grant
Founder, Universal Forest Products
Peter F. Secchia
peter-f-secchia
Chairman, Universal Forest Products
John Sirowatka
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Inventor, Universal Forest Products