Hose, for use with IC engines, which produces less noise has outer sleeve enclosing foam tube, to inside of which tubular filter, e.g. of non-woven textile, is glued

摘要

The hose, for use with IC engines, produces less noise. It has an outer sleeve (2) which encloses a foam tube (3). A tubular filter (6), e.g. of non-woven textile, is glued to the inside of the foam. An independent claim is included for IC engines fitted with the hose.