| 摘要 |
<p>A bi-directional propulsion caster assembly (10) enables a rider to generate bi-directional motion from a ride-on device (12). A mounting bracket (30) defines a pivot axis (34) extending in a generally transverse direction across the bottom (18) of the device (12). Rocker bracket (42) and caster shaft (24) having caster shaft axis (26) are attached to the mounting bracket (30) and pivot about the pivot axis (34) along an arc (36) between first and second positions (38, 40). A wheel bracket (22) is mounted to and rotates about the caster shaft (24). A wheel (20) is mounted to the wheel bracket (22) for rotation about wheel axis (21) angularly offset from the caster shaft axis (26). One or more changeable pivot stops (46) may be attached to the rocker bracket (42) or mounting bracket (30) and further define the available arc of rotation (36).</p> |
