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Load carrying structure and method of manufacture therefor

  • US 4,428,173 A
  • Filed: 04/09/1980
  • Issued: 01/31/1984
  • Est. Priority Date: 04/09/1980
  • Status: Expired due to Term
First Claim
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1. A load carrying structure (10), comprising:

  • top and bottom plates (22,24) each having first and second edge portions (50,52;

    54,56) and first and second end portions (38,46,40,48);

    first and second side plates (30,32) connected to said first and second edge portions (50,54;

    52,56), respectively, of both of said top and bottom plates (22,24) and each extending outwardly from and adjacent said first end portions (38,40) of said top and bottom plates (22,24), said outwardly extending portions (78,80) of said first and second side plates (30,32) being spaced one from the other;

    first and second support members (26,28) each having first and second side portions (58,60;

    62,64) and first and second end portions (34,36;

    42,44), said first support member (26) being connected at its first and second end portions (34,36) to said first end portions (50,52) of said top and bottom plates, respectively, and at its first and second side portions (58,60) to said first and second side plates (30,32), respectively, said second support member (28) being connected at its first and second end portions (42,44) to said second end portions (46,48) of said top and bottom plates (22,24), respectively, and at its first and second side portions (62,64) to said first and second side plates (30,32) respectively; and

    at least first, second and third preselected load input locations (70,72,74), said first and second load input locations (70,72) each being defined on said first and second side plates (30,32) and with said first and second support members (26,28), respectively, said third load input location (74) being defined on said outwardly extending portions (78,80) of said first and second side plates (30,32).

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