04239258 is referenced by 48 patents and cites 2 patents.

An improved retractable fold-up and extensible trailer typically for towing behind automotive vehicles, wherein the respective load accommodating sections of the trailer are interfittable and foldable into a compact configuration for storage and are extensible to form an enlarged trailer or bed for use. Essentially the trailer bed is in three sections, a center section attached to a wheel and axle assembly, and forward and rearward sections hingedly connected thereto. Latches are provided to retain the sections in either folded or unfolded positions, and a retractable tongue is provided on the front section for towing. The trailer may have nesting side portions or may be adapted to accommodate removable sides constructed in conventional stake body form.

Title
Fold-up trailer assembly
Application Number
5/968455
Publication Number
4239258
Application Date
December 11, 1978
Publication Date
December 16, 1980
Inventor
Frank H Burris
4165 Oak Hollow Rd., Claremont, 91711
CA, US
Agent
Boniard I Brown
IPC
B62D 63/00
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