초록 ▼

A bunk-style boat tailer is made with aluminum side rails and aluminum cross beams. A wheel and axle assembly is attached to the side rails near the rear of the trailer. The bunk beams are positioned so that approximately 3/4 of the length of the bunks is rearward of the axle mounting position. A fr

A bunk-style boat tailer is made with aluminum side rails and aluminum cross beams. A wheel and axle assembly is attached to the side rails near the rear of the trailer. The bunk beams are positioned so that approximately 3/4 of the length of the bunks is rearward of the axle mounting position. A front support of the bunk beams is attached to the side rails just forward of the axle mounting position. A rear support of the bunk beams is attached to the side rails at their rearward end. This cantilevers approximately 1/3 of the length of the bunks beyond the rear of the end of the side rails. A truss assembly structure transfers the load from the bunk supports to the wheel and axle assembly thereby reducing further the bending forces on the trailer side rails. This truss assembly also boxes the bunk support region of the trailer frame to reduce torsion forces. A wiring harness channel extends the length of at least one side rail.

대표청구항 ▼

[ What is claimed is:] [1.] An aluminum bunk beam boat trailer, comprising:a pair of aluminum side rails;a trailer hitch carried on an aluminum hitch support tube attached to the forward ends of said aluminum side rails;a plurality of aluminum cross members connected between said side rails;at least

[ What is claimed is:] [1.] An aluminum bunk beam boat trailer, comprising:a pair of aluminum side rails;a trailer hitch carried on an aluminum hitch support tube attached to the forward ends of said aluminum side rails;a plurality of aluminum cross members connected between said side rails;at least one axle and wheel assembly supporting the rear portion of the trailer and attached to the side rails thereof;a pair of bunk assemblies, mounted to a rear support, being a said cross member connected between side rails at the rearward ends thereof, and mounted to a front support, being a said cross member connected between said side rails adjacent to and immediately forward the position of said axle and wheel assembly;wherein at least 70 percent of said bunk assemblies is rearward of said axle and wheel assembly, and at least 30 percent of said bunk assemblies extends rearward of the end of said side rail beyond said bunk assemblies rear support, anda truss assembly support mounted between said axle and wheel assembly and said aluminum side rails;wherein said truss assembly support transfers said load from said bunk assemblies to said axle and wheel assembly through said pair of side rails;wherein said transfer of said load from said bunk assemblies to said axle and wheel assembly is without appreciable flexural force upon said pair of side rails; andwherein said truss assembly support includes:a truss cross bar connecting said pair of side rails adjacent to said axle and wheel assembly and boxing said side rails against torsion;at least one bracket mounted to each end of said truss cross bar, said end bracket facilitating said truss cross bar to side rail connection;a least a pair of leaf springs connected one each on one end to a respective one of said truss cross bar end brackets, wherein the other end of each said leaf spring is connected to its respective side rail a distance from said truss cross bar end bracket; andthe axle of said axle and wheel assembly connected to support the mid-point of each respective side rail connected leaf spring;wherein the expanse of said leaf spring forms a truss supported section of each respective side rail.