Patent ID: 9687975
Date: 2017-06-27
CPC Classifications: B25C

Claim:
1. A fastener driving tool for driving fasteners into a substrate, comprising: a working piston; a combustion chamber, wherein the working piston is drivable by the combustion chamber and wherein the combustion chamber includes an adjustable combustion chamber wall such that a volume of the combustion chamber is adjustable; an adjusting device, wherein the adjustable combustion chamber wall is linearly adjustable by the adjusting device; a metering valve device, wherein a fuel gas providable to the combustion chamber is meterable by the metering valve device; and a control device, wherein the adjusting device and the metering valve device are controllable by the control device, wherein a combustion chamber volume that corresponds to a desired target amount of driving energy is determinable by the control device, and wherein the volume of the combustion chamber is adjustable to a determined combustion chamber volume by the control device.