Patent ID: 9573421
Date: 2017-02-21
CPC Classifications: B60B,B62B

Claim:
1. A dolly comprising: (a) a chassis; (b) a castor having a fork and a wheel rotatably mounted to the fork, (c) a fastener for fixing the fork of the castor to the chassis of the dolly and placed on a rotational axis of the fork, where the fastener comprises a head shaped to the peripheral shape of the wheel of the castor, and (d) at least one wheel well for receiving a wheel, the wheel well limited by a rotationally symmetrical wall, and the fastener being placed in the middle of the well, wherein the fastener is prevented from rotation around its axial direction and the wheel well comprises a bottom plate having a hole with a shape based on a structure used to event rotation of the fastener around its axial direction.