Patent ID: 11939002
Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Field: Transport (Mechanical engineering)
Classification: CPC B  Y | IPC B

Claim 16:
17. A structural assembly comprising:
a frame comprising a wall at least partially defining an interior region; and
a plurality of panels disposed at least partially in the interior region and coupled to the frame, the plurality of panels comprising,
a first panel comprising a first surface and a second surface opposite the first surface, the first surface defining a first plurality of depressions and the second surface defining a first plurality of protrusions complementary to the first plurality of depressions,
a second panel coupled to the first panel, the second panel comprising a third surface and a fourth surface opposite the third surface, the third surface defining a second plurality of depressions and the fourth surface defining a second plurality of protrusions complementary to the second plurality of depressions, the first panel being coupled to the second panel,
a third panel disposed at least partially in the interior region and coupled to the frame, the third panel comprising a fifth surface and a sixth surface, the fifth surface defining a third plurality of depressions and the sixth surface defining a third plurality of protrusions complementary to the third plurality of depressions, and

a fourth panel disposed at least partially in the interior region and coupled to the frame, the fourth panel comprising a seventh surface and an eighth surface, the seventh surface defining a fourth plurality of depressions and the eighth surface defining a fourth plurality of protrusions complementary to the fourth plurality of depressions, the fourth panel being coupled to the third panel, wherein:
the first panel and the second panel cooperate to define a floor,
the third panel and the fourth panel cooperate to define a cover, and
the floor and the cover are spaced apart and cooperate with the frame to define an interior compartment.