| 摘要 |
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. |
