Paragraph Number

152

Referring to FIGS. 67-70, in one embodiment, the shaft 902 has an elongate cylindrical body 916. The shaft 902 may include three sections: first section 918, second section 920, third section 922. The first section 918 may have a first diameter and an exterior surface. The second section 920 may have a second diameter that is the same as the first diameter. In one embodiment, the second section 920 may include one or more planar surfaces 924. The planar surface 924 can serve to restriction rotation of the carriage 1002 about the shaft 902. In certain embodiments, having a single planar surface 924 the planar surface 924 creates a D-shaped cross-section within the second section 920.

Added by DJM 9 2021