| 摘要 |
A user-propelled vehicle is adapted for use as a ride on vehicle. The user-propelled ride on vehicle has a frame, a rider support platform, a steering column, a front cross member, a rear cross member, and a plurality of a caster assemblies coupled to the front and rear cross members at a front forward tilting angle to the vertical axis. |
| 主权项 |
1. A user-propelled ride on vehicle, comprising:
a frame having a leading end portion and a trailing end portion; a rider support platform coupled to the frame between the leading end portion and the trailing end portion; a steering column rotatably coupled to the leading end portion of the frame; a front cross member coupled to the rotatable steering column, a first portion of the front cross member positioned adjacent a first side of the frame and a second portion of the front cross member positioned adjacent a second side of the frame; a removable rear cross member fixedly coupled to the trailing end portion of the frame, a first portion of the rear cross member positioned adjacent the first side of the frame and a second portion of the rear cross member positioned adjacent the second side of the frame; a first front caster assembly having a first front pivot axle coupled to the first portion of the front cross member at a front forward tilting angle to a vertical axis through the front cross member, the first front pivot axle defining a first front pivot axis, and a first front wheel coupled to the first front pivot axle and rotatable about the first front pivot axis, the first front wheel also rotatable about a first front wheel axis, and a second front caster assembly having a second front pivot axle coupled to the second portion of the front cross member at the front forward tilting angle to the vertical axis through the front cross member, the second front pivot axle defining a second front pivot axis, and a second front wheel coupled to the second front pivot axle and rotatable about the second front pivot axis, the second front wheel also rotatable about a second front wheel axis; and, a first rear caster assembly having a first rear pivot axle coupled to the first portion of the rear cross member at a rear forward tilting angle to a vertical axis through the rear cross member, the first rear pivot axle defining a first rear pivot axis, and a first rear wheel coupled to the first rear pivot axle and rotatable about the first rear pivot axis, the first rear wheel also rotatable about a first rear wheel axis, and a second rear caster assembly having a second rear pivot axle coupled to the second portion of the rear cross member at the rear forward tilting angle to the vertical axis through the rear cross member, the second rear pivot axle defining a second rear pivot axis, and a second rear wheel coupled to the second rear pivot axle and rotatable about the second rear pivot axis, the second rear wheel also rotatable about a second rear wheel axis. |
