초록 ▼

A castor assembly suitable for use in decks or dollies for moving freight or other heavy items includes a wheel, a carriage on which the wheel bracket is mounted for rotation about a first axis and a bearing enabling the carriage to rotate about a second axis at an angle different than the first axi

A castor assembly suitable for use in decks or dollies for moving freight or other heavy items includes a wheel, a carriage on which the wheel bracket is mounted for rotation about a first axis and a bearing enabling the carriage to rotate about a second axis at an angle different than the first axis, the first axis being offset from the second axis. The bearing includes an inner bearing ring and an outer bearing ring movable relative to one another. The inner bearing ring is secured for rotation with the carriage about the second axis. The inner bearing ring is disposed generally concentrically within the outer bearing ring and the carriage is disposed generally concentrically within the inner bearing ring. The inner and outer bearing rings and the carriage together form a substantially planar assembly.

대표청구항 ▼

[ What is claimed is:] [1.]1. A castor assembly comprising:a wheel having a load-contacting portion;a carriage, on which said wheel is mounted for rotation about a first axis; anda bearing operable to enable said carriage to rotate about a second axis inclined with respect to said first axis, said f

[ What is claimed is:] [1.]1. A castor assembly comprising:a wheel having a load-contacting portion;a carriage, on which said wheel is mounted for rotation about a first axis; anda bearing operable to enable said carriage to rotate about a second axis inclined with respect to said first axis, said first axis being spaced from said second axis; said bearing comprising inner and outer bearing rings movable relative to one another, said inner bearing ring being secured to said carriage for rotation with said carriage about the second axis, and being disposed generally concentrically with and within said outer bearing ring so that said inner and outer bearing rings are substantially co-planar; said carriage being disposed generally concentrically within said inner bearing ring so that said inner bearing ring and said carriage are substantially co-planar, and said inner and outer bearing rings and said carriage, in combination, forming a substantially planar assembly;the first axis about which said wheel rotates being located below a plane defined by said inner and outer bearing rings so that only the load-contacting portion of said wheel projects outwardly from the planar assembly; a depth of said castor assembly excluding said wheel, measured in a direction parallel to the plane of the wheel, being less than the diameter of said wheel.