US 9,868,166 B2 · Power tool with pyrotechnic lockout

Abstract

A power tool assembly includes a workpiece support surface, a latch movable between a first latch position whereat a drop arm assembly cannot be moved from a first position whereat a shaping device does not extend above the workpiece support surface to a second position whereat the shaping device extends above the workpiece support surface, to a second latch position whereat the drop arm assembly can be moved from the first position to the second position, an actuator housing configured to receive an actuator device, and a reaction plug configured to be selectively seated with the actuator housing, the reaction plug configured such that when an actuator device is installed in the actuator housing and the reaction plug is moved from an unseated position to a fully seated position, the reaction plug forces the actuator device to move the latch from the first latch position to the second latch position.

Claims17

Dependent claims

A power tool assembly comprising:

a workpiece support surface;
a drop arm assembly movable along a drop path between a first drop arm assembly position whereat a portion of a shaping device supported by the drop arm assembly extends above the workpiece support surface and a second drop arm assembly position whereat the portion of the shaping device does not extend above the workpiece support surface;
a latch movable between a first latch position whereat the drop arm assembly cannot be moved from the second drop arm assembly position to the first drop arm assembly position, and a second latch position whereat the drop arm assembly can be moved from the second drop arm assembly position to the first drop arm assembly position;
an actuator housing configured to receive an actuator device;
and a reaction plug configured to be selectively seated with the actuator housing, the reaction plug configured such that when the actuator device is installed in the actuator housing and the reaction plug is moved from an unseated position to a fully seated position, the reaction plug forces the actuator device to move the latch from the first latch position to the second latch position.

2 more elements

A method of operating a power tool assembly having a drop arm assembly movable along a drop path between a first drop arm assembly position whereat a portion of a shaping device supported by the drop arm assembly extends above a workpiece support surface and a second drop arm assembly position whereat the portion of the shaping device does not extend above the workpiece support surface comprising:

inserting an actuator device into an actuator housing;
moving a reaction plug configured to be selectively seated with the actuator housing from an unseated position to a fully seated position with the actuator inserted;
causing the actuator device to move a latch from a first latch position whereat the drop arm assembly cannot be moved from the second drop arm assembly position to the first drop arm assembly position, to a second latch position whereat the drop arm assembly can be moved from the second drop arm assembly position to the first drop arm assembly position, by movement of the reaction plug from the unseated position to the fully seated position;
and
moving the drop arm assembly from the second drop arm assembly position to the first drop arm assembly position after moving the reaction plug from the unseated position to the fully seated position.

2 more elements

Dependencies are inferred from the claim text.

Power tool with pyrotechnic lockout

Life of this patent

Power tool with pyrotechnic lockout

Life of this patent

Abstract

Claims17