| 摘要 |
A device is disclosed that traverses terrain. The device includes a removable axle 52, where the device is configured to traverse terrain, a groove 93 connected with a boot 2400 for receiving the axle 93, the groove 93 is configured to enable the boot 2400 to pivot about the axle 5200 and securely couple the boot 2400 with the axle 52. The groove 93 may be formed in a boot 2400 and configured to receive the axle 52, or the groove 93 may be formed in a mounting plate 1604 removably attachable with the boot 2400 and configured to receive the axle 52.
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