Combustion chamber system with obstacles for use within combustion-powered fastener-driving tools, and combustion-powered fastener-driving tools having combustion chamber system incorporated therein

摘要

The combustion chamber system (10) comprises a dual combustion chamber system comprising a pre-combustion chamber (12) and a final combustion chamber (14). The pre-combustion chamber is characterized by a high aspect ratio and has different obstacles fixedly incorporated therein for selectively retarding or enhancing the rate of burn and the rate of speed of the flame front propagating through the pre-combustion chamber. In a similar manner, an obstacle (52) having a predetermined solid geometrical configuration is disposed within the final combustion chamber at a position immediately disposed downstream of the port fluidically interconnecting the pre-combustion chamber (12) to the final combustion chamber (14) so as to effectively intercept the flame front and cause the same to diverge and split into multiple components which flow radially outwardly with a desirably accelerated rate of speed and which traverse the entire diametrical extent of the final combustion chamber. IMAGE