Abstract: The present invention relates to a gas treatment apparatus for treating the exhaust gas stream from an internal combustion engine. The apparatus comprises several compartments within which one or more treatments are to be performed upon a gas flowing through the compartments. At least one compartment includes a treatment element secured against axial movement at each end. The treatment element is secured at least at one end by removable axial retaining apparatus. The removable axial retaining apparatus includes a secured member secured against axial movement. The treatment element is removable from within the compartment by axial movement after the removable axial retaining apparatus has been removed.

Abstract: The invention provides apparatus for treating a gas stream, notably a silencer assembly for use to treat the exhaust gasses from an internal combustion engine, which apparatus comprises a plurality of compartments within which one or more treatments are to be performed on a gas stream passing through the compartment, and through which the gas stream is to flow sequentially, characterised in that: a. At least two of said compartments each comprises a tubular body member containing or carrying a treatment element which is restrained against axial movement relative to the body member; and b. The tubular body members of the adjacent compartments are provided with radially outwardly and/or inwardly extending terminal flanges, at least some of which flanges provide a shoulder against which the opposing terminal portion of the adjacent compartment bears so as to form an axially extending structure comprising at least two compartments in axial or coaxial relationship to one another; and c.

Abstract: The present invention relates to a gas treatment apparatus for treating the exhaust gas stream from an internal combustion engine. The apparatus comprises several compartments within which one or more treatments are to be performed upon a gas flowing through the compartments. At least one compartment includes a treatment element secured against axial movement at each end. The treatment element is secured at least at one end by removable axial retaining apparatus. The removable axial retaining apparatus includes a secured member secured against axial movement. The treatment element is removable from within the compartment by axial movement after the removable axial retaining apparatus has been removed.

Abstract: The invention provides apparatus for treating a gas stream, notably a silencer assembly for use to treat the exhaust gasses from an internal combustion engine, which apparatus comprises a plurality of compartments within which one or more treatments are to be performed on a gas stream passing through the compartment, and through which the gas stream is to flow sequentially, characterised in that: a) at least two of said compartments each comprises a tubular body member (1) containing or carrying a treatment element (2) which is restrained against axial movement relative to the body member (1); and b) the tubular body members (1) of the adjacent compartments are provided with radially outwardly and/or inwardly extending terminal flanges (4), at least some of which flanges (4) provide a shoulder against which the opposing terminal portion of the adjacent compartment bears so as to form an axially extending structure comprising at least two compartments in axial or coaxial relationship to one another; and c) one