| 主权项 |
1. A rip fence for a table saw comprising:
a frame having a front portion and a rear portion; a front clamping lever pivotably supported in the front portion of the frame for movement between a clamped and an unclamped position, the front clamping lever being configured to be moved into and out of engagement with a front guide of the table saw when moved between the clamped and the unclamped positions; a handle pivotably supported in the front portion of the frame for movement between a locked and an unlocked position, the handle including a lever portion that engages the front clamping lever and moves the front clamping lever from the unclamped to the clamped position when the handle is moved from the unlocked position toward the locked position; a rear clamping lever attached to the rear portion of the frame and movable between a clamped and unclamped position, the rear clamping lever being configured to be moved into and out of engagement with a rear guide of the table saw when moved between the clamped and unclamped positions; a linkage that operatively couples the handle and the rear clamping lever; a member configured to support the front portion of the frame, the member including a clamping portion extending downward from the frame adjacent to an outer surface of the front guide; and a bearing and alignment assembly attached to the clamping portion of the member, the bearing and alignment assembly including a plurality of roller bearings that are configured to slide within a slot defined in the front guide of the table saw, the plurality of roller bearings being configured to engage opposing surfaces of the slot to maintain the frame at a predetermined orientation with respect to the front guide and the rear guide when the handle is in the unlocked position, wherein the plurality of roller bearings includes:
at least one stationary roller bearing that is fixedly attached to the member for engaging a first inner surface of the slot; andat least one spring-loaded roller bearing that is spring-loaded against a second inner surface of the slot opposite the first inner surface; and wherein, when the front clamping lever is moved to the clamped position by the lever portion of the handle, continued movement of the handle to the locked position results in the handle pulling the linkage and the rear clamping lever toward the front portion of the frame and causes the rear clamping lever to move from the unclamped to the clamped position. |
