Patent ID: 8875804

Claim:
A screwdriving tool comprising a driving tool, a contact trip assembly that is removably coupled to the driving tool, a sensor and a sensor target, the driving tool having a tool housing, a motor assembly and an output member that is driven by the motor assembly, the contact trip assembly having a nose element, one of the nose element and the output member being axially movable and biased by a spring into an extended position, one of the sensor and the sensor target being coupled to the tool housing, the other one of the sensor and the sensor target being coupled to the one of the output member and the nose element for axial movement relative to the one of the sensor and the sensor target, the sensor providing a sensor signal that is based upon a distance between the sensor and the sensor target, wherein the motor assembly is controllable in a first operational mode and at least one rotational direction based in part on the sensor signal; wherein one of the driving tool and the contact trip assembly includes a clip that is engagable to a circumferentially extending groove in the other one of the driving tool and the contact trip assembly, the clip being movable between an engaged position in which the clip engages the groove to prevent separation of the contact trip assembly from the driving tool, and a disengaged position to permit axial separation of the contact trip assembly from the driving tool.