(under subclass 247) Apparatus having conduit means by which ambient air may flow exteriorly of and from a point before to a point after the combustion chamber.
SEE OR SEARCH THIS CLASS, SUBCLASS:
224+, for interrelated motors wherein air being supplied to one motor may first flow around the combustion chamber for another motor.
262, for motors having means to flow air exteriorly of and from a point before to a point after its combustion chamber forming means.
264, for motors having means to introduce air into the exhaust gas stream.
266, for motors which may be cooled by an air stream.
