| 摘要 |
he invented wheeled creeper is composed of the frame 1, four or six wheels two of which, at least, are furnished with a braking system 2. The advantage of the invention is that, for achieving safely its work, the technician lying on the creeper is permitted to secure the wheels of this last at the desired positions. The securing of wheels involves the complete immobilization of the creeper in the forward and backward direction as well as around the axis of the creeper. |
