Saw blade having a prearranged hub section

摘要

A saw blade comprising a blade body having a longitudinal axis, a cutting means disposed at a first end of the blade body and a prearranged hub section having an outer periphery located at a second end of the blade body is shown. The prearranged hub section comprises an elongated slot formed in the hub section which extends from the outer periphery along a longitudinal axis to a U-shaped cut-out forming a hub center. The hub center is located along the longitudinal axis. The hub section includes a plurality of slots, each of the slots having a generally rectangular elongated blade driving enabling section having one end which terminates in an expanded bulbous blade driving disabling section in a position opposed to the hub center. The respective generally rectangular elongated blade driving enabling section are disposed in a pattern along a radius centered at the hub center. The respective generally rectangular elongated blade driving enabling section of each slot being configured for engaging a selected blade driving structure and for disengaging from a different blade driving member.