초록 ▼

A single wheel support for a vehicle-towed trailer. The support includes a swivel plate mounted on the trailer for swiveling about an upright axis. An elongate arm assembly is mounted adjacent one of its ends on the swivel plate for swinging about a horizontal swing axis. The wheel in the support is

A single wheel support for a vehicle-towed trailer. The support includes a swivel plate mounted on the trailer for swiveling about an upright axis. An elongate arm assembly is mounted adjacent one of its ends on the swivel plate for swinging about a horizontal swing axis. The wheel in the support is rotatably mounted on the other end of the assembly rearwardly of the swing axis. The arm assembly is biased in a direction opposing the weight of the trailer by a coiled spring compressibly interposed between the plate and a back region of the arm assembly, and by a coiled spring under tension interposed between the plate and a front region of the assembly.

대표청구항 ▼

Single wheel apparatus for supporting a vehicle-towed trailer, said apparatus comprising: an elongate substantially horizontal swivel member and swivel means for mounting the swivel member on the trailer for swiveling of the member about an upright axis, an elongate arm assembly and pivot means moun

Single wheel apparatus for supporting a vehicle-towed trailer, said apparatus comprising: an elongate substantially horizontal swivel member and swivel means for mounting the swivel member on the trailer for swiveling of the member about an upright axis, an elongate arm assembly and pivot means mounting the assembly adjacent its upper end on said swivel member, at a region intermediate the ends of the swivel member, for swinging of the arm assembly about a horizontal swing axis, the assembly including at least one elongate arm depending downwardly from said pivot means, said arm assembly further including an elongate spring-mounting member disposed under and spaced from the swivel member and joined to said arm between its ends, said swivel and spring-mounting members extending longitudinally in the trailer and having opposite end regions disposed forwardly and rearwardly of said swing axis, a wheel mounted on said assembly adjacent the lower end thereof for rotation about a rotation axis substantially paralleling said swing axis and disposed rearwardly of said swivel axis, compression spring means interposed between said swivel member and said spring-mounting member, located rearwardly of said swing axis, operable to urge said assembly in one direction about said swing axis, and tension spring means interposed between said swivel member and said spring-mounting member, located forwardly of said swing axis, operable to urge said assembly in said one direction about said swing axis.