Method for assembling panels of dissimilar materials
View Patent ↗A fastening system for attaching cladding panels to a carrier panel and allowing for differential thermal expansion. The system fastens the two panels together at points in the direction perpendicular to the panel planes. A combination of different carrier panel hole sizes and slots fix the panels together at one point and allow the panels to expand and contract relative to each other while maintaining rectangular alignment. Wall panels and buildings constructed using the fastener are disclosed.
1. A method for fastening two panels of dissimilar materials using a fastening system for panels of dissimilar materials, the fastening system comprising,
(a) a threaded fastener:
(b) a captive nut with a through hole comprising:
(i) a main body with a first flat face;
(ii) a shoulder protruding from the first flat face;
(iii) a polygonal extension protruding from the shoulder;
(c) a captive washer comprising;
(i) a washer body; and
(ii) a polygonal cutout sized to fit the said polygonal extension; and the method comprising:
(i) providing two or more through holes in a first panel to allow threaded fasteners to penetrate said first panel;
(ii) inserting a threaded fastener in the through hole of the captive nut;
(iii) inserting the threaded fastener and captive nut through a hole provided in the first panel;
(iv) inserting the threaded fastener through a captive washer on the opposite side of the first panel from the captive nut;
(v) mating the hex extension to the hex cutout;
(vi) driving the threaded fastener into a second panel.
2. The method of claim 1 wherein the main body of the captive nut is in the shape of a hexagon.
3. The method of claim 2 wherein a wrench is placed on the hexagon shaped main body of the captive nut to prevent the fastener from spinning while the threaded fastener is driven into the second panel.