There are disclosed systems and methods for safely and effectively removing the articular cartilage and cortical bone layers from an articular surface of a human cadaveric femoral head. One embodiment includes an osseous-sanding accessory system installed upon a conventional band saw having a motor and a cabinet that houses a pulley coupled with a primary drive shaft rotated by the motor. The accessory system may include a threaded drive shaft coupled with the primary drive shaft, a grinding disk having an abrasive surface and affixed about a distal end of the threaded drive shaft, and a removable accessory table mounted to the band saw below the grinding disk. When the motor rotates the primary drive shaft, and thus the threaded drive shaft, the grinding disk rotates relative to the accessory table and abrades osseous tissues introduced to the abrasive surface of the grinding disk. Other embodiments are also disclosed.

A table saw has a table on which the workpiece is placed. The table saw has a main body located below the table and equipped with a motor. The table saw has a cutting blade connected to the motor and penetrating the table in an up-down direction. The table saw has a guide mechanism for tilting the cutting blade along with the main body with respect to the table. The guide mechanism moves the center of the cutting blade downward and away from the table as the upper end of the cutting blade is moved closer to the table, and to the right (second side) opposite to the left (first side) to which the upper end moves.

Power saws and features for power saws are disclosed. Various features are particularly relevant to jobsite or benchtop table saws. Such features include a frame or support structure with panels and shaped or bent tubes, a trunnion formed from a shaped tube, a tilt mechanism, an elevation mechanism, a retraction mechanism, an arbor block retention mechanism, an insert, a fence, dust collection, shrouding, and a fence stop.

A table saw in one embodiment includes a motor, a blade operably connected to the motor, at least a portion of the blade positioned within an enclosure, and a dust plate extending within the enclosure and positioned between the at least a portion of the blade and the motor.

A power tool assembly includes a latch movable between a first latch position whereat the latch supports a drop arm assembly in a first drop arm assembly position, and a second latch position whereat the latch does not support the drop arm assembly position at the first drop arm assembly position, and an arbor lock movable between a first lock position whereat the arbor lock prevents movement of the drop arm assembly toward the second drop arm assembly position when the drop arm assembly is in the first drop arm assembly position, and a second lock position whereat the arbor lock does not prevent movement of the drop arm assembly toward the second drop arm assembly position when the drop arm assembly is in the first drop arm assembly position.

Table saws and table saws designed to implement safety systems that detect contact between a person and a dangerous portion of the saw are disclosed. Table saw components, mounting systems for table saws, and table saw attachments are also disclosed. One embodiment may include a first clamp surface, a second clamp surface spaced apart from the first clamp surface so that a base portion of a riving knife or splitter can be placed between the clamp surfaces with the opposing sides of the base portion generally parallel to the first and second clamp surfaces.

A power tool in one embodiment includes a work-piece support surface, a swing arm assembly movable along a swing path between a first swing arm position whereat a portion of a shaping device supported by the swing arm assembly extends above the work-piece support surface and a second swing arm position whereat the portion of the shaping device does not extend above the work-piece support surface, a latch pin pivotable between a first position engaged with the swing arm assembly and a second position whereat the latch is not engaged with the swing arm assembly, an actuator configured to pivot the latch pin from the first position to the second position and to force the swing arm assembly away from the first swing arm position and toward the second swing arm position, and a control system configured to actuate the actuator in response to a sensed condition.

A power tool in one embodiment includes a work-piece support surface, a swing arm assembly movable along a swing path between a first swing arm position whereat a portion of a shaping device supported by the swing arm assembly extends above the work-piece support surface and a second swing arm position whereat the portion of the shaping device does not extend above the work-piece support surface, a latch pin pivotable between a first position engaged with the swing arm assembly and a second position whereat the latch is not engaged with the swing arm assembly, an actuator configured to pivot the latch pin from the first position to the second position and to force the swing arm assembly away from the first swing arm position and toward the second swing arm position, and a control system configured to actuate the actuator in response to a sensed condition.

A table saw includes a support arrangement and a table top assembly including a work piece support surface defining a plane and a saw blade opening in the work piece support surface. An undercarriage assembly, mounted to the table top assembly, supports a saw blade in an adjustable angular position and includes a motor assembly and an arbor shaft to support the saw blade in the saw blade opening. The bevel pivoting mechanism is configured to increase a distance between the motor or arbor shaft and the plane of the work piece support surface with a change to the angular position of the saw blade to substantially prevent the motor or arbor from contacting the table top assembly.

A method of mounting a capacitive coupling plate to a power tool assembly including a drop arm assembly, an actuating device configured to transfer a force to the drop arm assembly, and a control system configured to control the actuating device includes connecting a capacitive coupling plate bracket formed from a non-conductive material to a drop arm frame of the drop arm assembly, and mounting the capacitive coupling plate to the capacitive coupling plate bracket.