Patent ID: 11858636
Assignee: THE GOVERNMENT OF THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY OF HOMELAND SECURITY
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 22:
23. The method of claim 22, wherein:
the first middle side rail is disposed in a middle of the first side of the top perimeter and the bottom perimeter of the frame;
the first diagonal support tube with the first vertical support tube and the second diagonal support tube with the second vertical support tube are mirror images of one another on opposite sides of the first middle side rail;
the second middle side rail is disposed in a middle of the second side of the top perimeter and the bottom perimeter of the frame; and
the third diagonal support tube with the third vertical support tube and the fourth diagonal support tube with the fourth vertical support tube are mirror images of one another on opposite sides of the second middle side rail.