Patent ID: 8230767

Claim:
A fastener driving tool for an insulation material plug anchorable with a fastener in a substrate, comprising: a first drive shaft having a shank extending along a longitudinal axis and having a first end and a second end opposite the first end; a first rotary carrier for the fastener at the first end and a second rotary carrier for a fastener driving tool device at the second end; a second drive shaft arranged coaxially to the first drive shaft, the second drive shaft having a hollow shank with a third carrier for the insulation material plug at a second drive shaft first end; and a coupler disengageable by axial pressure and arranged in an area at a distance from second drive shaft first end, the coupler including at least one locking element engaging into at least one recess in order to transfer a torque from the first drive shaft to the second drive shaft, a groove guiding the at least one locking element, the groove being adjacent to the at least one recess and, starting from the at least one recess, extending helically, at least in some areas, along a circumference in a direction of the second end of the first drive shaft.