Patent ID: 11866256
Assignee: WALMART APOLLO, LLC
Field: Mechanical elements (Mechanical engineering)
Classification: CPC B  F | IPC B

Claim 6:
7. The mobile robot of claim 1, wherein linear drive mount comprises a first linear drive mount on a first side of the passage, the passage further comprising a second linear drive mount on a second side of the passage opposite the first side, and wherein the compliant drive assembly comprises a first compliant drive assembly, the motor comprises a first motor, the shaft comprises a first shaft and the drive gear comprises a first drive gear, the mobile robot further comprising:
a second compliant drive assembly for moving the mobile robot in the passage, the compliant drive assembly comprising:
a second motor mounted within the mobile robot, the second motor comprising a third spline;
a second shaft having a fourth spline, the second shaft configured to be rotated about an axis of rotation by the second motor by the third spline of the second motor exerting force on the fourth spline of the second shaft, the second shaft further configured to be extended axially along the axis of rotation;
a second drive gear mounted on an end of the second shaft, the second drive gear configured to move into engagement with the second linear drive mount upon extension of the second shaft;
wherein the third and fourth splines are configured for rotational play between the third and fourth splines, the rotational play allowing a degree of free rotation of the second drive gear relative to the second linear drive mount to prevent jamming of the second drive gear against the second linear drive mount when the second drive gear moves into engagement with the second linear drive mount upon extension of the second shaft.