POSITIVE LOCKING HANDLE AND SELF-CENTERING MECHANISM FOR TRACK ENGAGEMENT

摘要

The invention described herein generally pertains to locking mechanisms for levers (110, 120) operable to mount a tractor unit (100) to a guide track and to engage a drive gear of the tractor unit to a track gear of the guide track. The levers for mounting the tractor unit and/or to engage the drive gear are Iockable in a closed position. The closed position relates to a state of the levers when the tractor unit is mounted on the guide track or when the drive gear is engaged with the track gear. The levers can be easily operable to mount/dismount or engage/disengage, respectively.