Patent attributes
A driving-in apparatus comprises a hand-held housing having an energy transmission element accommodated therein for transmitting energy to a fastening element to be driven in, and a drive device for driving the energy transmission element, wherein the drive device comprises an energy accumulator having a gas chamber which is fillable with a driving gas at a defined overpressure, wherein the overpressure is present in the gas chamber as stored driving energy prior to initiation of a driving-in operation, and wherein a piston of the energy transmission element forms a variable wall section of the gas chamber. The apparatus also includes a heating member providing thermal energy that is transferable into the driving gas enclosed in the gas chamber.