| 主权项 |
1. A crawler track vehicle comprising.
(a) a track frame having an underside on which there are rollers suitable for movement on a crawler track, (b) a slide bar fitted longitudinally within the track frame, with the slide bar having on its one end a drive wheel adapted to engage and move an endless crawler track and on its other end an idler wheel, with both the drive wheel and idler wheel located outside of the track frame, and with the track frame and slide bar adaptable to move independently of each other; and (c) means to alternately move the track frame and the slide bar. |
