Various safety systems for power tools, and in particular table saws include detection systems for detecting a dangerous condition relative to a blade of the power tool, reaction systems for taking mitigation action in response to detection of a dangerous condition. The safety system may detect, prevent, and/or mitigate a dangerous condition associated with the power tool.

A safety device for a bandsaw includes a frame and a pair of jaws rotatably mounted thereon. The frame is mounted on the framework of the saw with the jaws on either side of the blade. An actuating rod is slidably mounted on the frame. A resilient return member constrains the sliding and a two-way transmission transforms it into a rotation of the pair of jaws. An electromagnetic actuator is rigidly connected to the frame and a retaining member is rigidly connected to the actuator. The rod has a receiving portion which engages with the retaining member when the rod is in a first position relative to the frame. The transmission is arranged so that the jaws are separated from one another when the rod is in the first position.

A safety device for a bandsaw includes a frame and a pair of jaws rotatably mounted thereon. The frame is mounted on the framework of the saw with the jaws on either side of the blade. An actuating rod is slidably mounted on the frame. A resilient return member constrains the sliding and a two-way transmission transforms it into a rotation of the pair of jaws. An electromagnetic actuator is rigidly connected to the frame and a retaining member is rigidly connected to the actuator. The rod has a receiving portion which engages with the retaining member when the rod is in a first position relative to the frame. The transmission is arranged so that the jaws are separated from one another when the rod is in the first position.

Various safety systems for power tools, and in particular table saws include detection systems for detecting a dangerous condition relative to a blade of the power tool, reaction systems for taking mitigation action in response to detection of a dangerous condition. The safety system may detect, prevent, and/or mitigate a dangerous condition associated with the power tool.

Table saws with safety systems are disclosed. The safety systems detect and react to dangerous conditions, such as contact between the blade and a person. The table saws may include a switch, a first light that illuminates to indicate the safety system is operable, and a second light that illuminates to indicate that the safety system is inoperable. The switch may not power the saw when switched on if the second light is illuminated.

Table saws with safety systems are disclosed. The safety systems detect and react to dangerous conditions, such as contact between the blade and a person. The table saws may include a switch, a first light that illuminates to indicate the safety system is operable, and a second light that illuminates to indicate that the safety system is inoperable. The switch may not power the saw when switched on if the second light is illuminated.

Woodworking machines and safety methods for use with those machines are disclosed. The machines include a detection system adapted to detect one or more dangerous conditions and a reaction system associated with the detection system. The reaction system can include an explosive to trigger the system, and also can be configured to retract a cutting tool at least partially away from a cutting region upon detection of a dangerous condition by the detection system.

Table saws with safety systems are disclosed. The safety systems detect and react to dangerous conditions, such as contact between the blade and a person. The table saws may include a switch, a first light that illuminates to indicate the safety system is operable, and a second light that illuminates to indicate that the safety system is inoperable. The switch may not power the saw when switched on if the second light is illuminated.

Throat plates for table saws and table saws are disclosed. In some embodiments, the throat plates and/or saws have at least one securement mechanism to secure and prevent inadvertent removal of the throat plate from the throat of the saw. In some embodiments, at least one of the securement mechanisms also provides a height adjustment mechanism and/or prevents vertical removal of the throat plate. In some embodiments, the throat plate has an accessory mounting port that provides a portal for accessories, including safety accessories, to extend through the plate from beneath the table of the saw. In some embodiments, the port extends from the plate's outer perimeter to divide the plate's rear end portion into a pair of spaced-apart members. In some embodiments, these members are independently secured to the table saw and retained apart from each other by one or more of the securement mechanisms.

A paper cutting apparatus comprises a cutting unit to cut paper, a moving unit to move the cutting unit in a direction intersecting the conveyance direction of the paper, and a motor to drive the moving unit. The paper cutting apparatus also includes a detection unit to detect the current value of the motor and a determination unit to determine the state of the current value while the cutting unit that has begun moving from a specific position toward a target stop position is moving from a downstream end of the paper to a predetermined target stop position in the movement direction of the cutting unit. A control unit is configured to stop the drive of the motor on the basis of the determination result of the determination unit.