Patent ID: 8316747

Claim:
A table saw comprising: a swing arm assembly movable along a swing path between a first swing arm position and a second swing arm position; an actuator configured to force the swing arm assembly away from the first swing arm position and toward the second swing arm position; a riving knife positioned outwardly of the swing arm assembly when the swing arm assembly is in the first swing arm position, the riving knife including a channel with a first end portion and a second end portion, the channel having: a first curved channel portion with a first center of curvature, the first curved channel portion being located proximate the first end portion of the channel, and a second curved channel portion with a second center of curvature, the second curved channel portion being located between the first curved channel portion and the second end portion, wherein the first center of curvature is not coincident with the second center of curvature; a fixed pin slidably received within the channel, and a clamping member with a cam portion positioned within the channel, wherein the riving knife is configured such that when the fixed pin is positioned within the first curved channel portion, at least a portion of the riving knife extends upwardly of a work piece support surface and when the fixed pin is positioned within the second curved channel portion, the riving knife does not extend upwardly of the work piece support surface.