COMBUSTION CHAMBER SYSTEM WITH OBSTACLE FOR USE WITHIN COMBUSTION FASTENER-DRIVING TOOL, AND THE SAME HAVING COMBUSTION CHAMBER SYSTEM INCORPORATED THEREIN

摘要

PROBLEM TO BE SOLVED: To provide a new and improved combustion chamber system for use within combustion fastener-driving tools, and the new and improved combustion fastener-driving tools having the new and improved combustion chamber system incorporated therein. SOLUTION: The combustion chamber system comprises, for example, a dual combustion chamber system comprising a first upstream pre-combustion chamber and a second downstream final combustion chamber. The first upstream pre-combustion chamber is characterized by a high aspect ratio defined by means of the ratio of the length dimension of the pre-combustion chamber relative to the width dimension of the pre-combustion chamber, and has various predetermined obstacle means or obstacles fixedly incorporated therein for selectively retarding or enhancing a rate of burn and the rate of speed of the flame front propagating through the first upstream pre-combustion chamber. COPYRIGHT: (C)2004,JPO