High strength caster with dual offset orbital mounting assembly
OwnerPhilip Aubininventor
Life of this patent
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Abstract
In a heavy duty orbital caster assembly that includes a rotatable wheel unit joined to a transfer plate that pivots about a mounting post extending from a mounting plate adapted to be secured to the bottom surface of an object, the improvement comprising a pair of roller bearing assemblies that extend upwardly from the upper surface of the transfer plate adjacent to the caster wheel post as it extends through its bearing. The rollers impinge on the lower surface of the mounting plate, and serve to transfer some of the load of the supported object directly to the caster wheel, enabling the support of very heavy loads.
Claims13
In a heavy duty orbital caster assembly that includes a rotatable wheel unit disposed in ground-engaging fashion and joined by a head post to a transfer plate that pivots about a mounting post extending from a mounting plate adapted to be secured to the bottom surface of an object, the improvement comprising:
- at least one roller bearing assembly secured between said mounting plate and said transfer plate in a load transferring relationship and disposed to extend upwardly from the upper surface of the transfer plate to contact said mounting plate in rolling fashion,
- wherein said at least one roller bearing assembly is secured to said transfer plate in a position radially spaced from said mounting post;
- further including a pair of said roller bearing assemblies radially spaced from said mounting post and angularly spaced with respect to the rotational axis of said mounting post;
- said mounting post and said pair of roller bearing assemblies comprising the vertices of a support triangle, and said head post is secured to said transfer plate within said support triangle;
- said head post being located at approximately the centroid of said support triangle.
In a heavy duty orbital caster assembly that includes a rotatable wheel unit disposed in ground-engaging fashion and joined by a head post to a transfer plate that pivots about a mounting post extending from a mounting plate adapted to be secured to the bottom surface of an object, the improvement comprising:
- at least one roller bearing assembly secured between said mounting plate and said transfer plate in a load transferring relationship and disposed to extend upwardly from the upper surface of the transfer plate to contact said mounting plate in rolling fashion;
- wherein said at least one roller bearing assembly includes a roller shaft supporting a roller wheel, and a protector assembly to block objects from impinging on said roller wheel.
Dependencies are inferred from the claim text.