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AssigneeDonaldson Company, Inc.
InventorsSteven D. Schmeichel, Wayne M. Wagner, John S. Wiese, Bruce B. Hoppenstedt, Joanne E. Kleinhenz, David L. Roberts
Estimating the term…
An integral formed fluted tube intended, for example, for use as a sound suppression device in mufflers, exhaust ejectors, etc. is disclosed. The tube is formed of a cylindrical portion with generally circular inlets and outlets and a constricted portion between those ends and within the constriction, a plurality of bypasses therethrough. The constriction may also include a frontal portion having a generally concave surface which rises to an apex and thereafter forms a plurality of convex rear portions toward the outlet end. Other embodiments are shown in the Figures. The device may be used integrally within a muffler to obtain a venturi effect for an exhaust ejector and sound suppressor.
A sound suppression device having a housing with an inlet and outlet, and a single integral tubular member in gaseous connection with said inlet and outlet, said tubular members having first and second ends and a constricted portion forming a throat portion therebetween, said portion being circumferentially discontinuous and having a noncircular periphery and at least one fluted passage within said throat portion located at a discontinuity which extends through said constriction, thereby permitting a portion of the gas flow to circumvent said constriction.
A muffler for use with an engine, said muffler having a housing with an inlet and outlet, and a single integral tubular member in gaseous connection with said inlet and outlet, said tubular member having first and second ends and a constricted portion forming a throat portion therebetween, said portion being circumferentially discontinuous and having a noncircular periphery and at least one fluted passage within said throat portion located at a discontinuity which extends through said constriction, thereby permitting a portion of the gas flow to circumvent said constriction.
In an exhaust ejector system having a tubular member including a venturi therein, a scavenge tube of lesser diameter than said tubular member inserted into said member proximate said venturi for drawing air out of said scavenge tube and through said venturi by virtue of a low pressure condition present in the venturi, the improvement comprising said tubular member being a single integral tubular member having an inlet and outlet, said member having first and second ends and a constricted portion forming a throat portion therebetween, said portion being circumferentially discontinuous and having a noncircular periphery and at least one fluted passage within said throat portion located at a discontinuity which extends through said constriction, thereby permitting a portion of the gas flow to circumvent said constriction.
In an ejector muffler system for sound suppression and ejecting matter carried in a scavenge tube, including a muffler having a tubular member having a venturi therein and said scavenge tube of lesser diameter than said tubular member being inserted into said member proximate said venturi, for ejecting matter out of said scavenge tube by virtue of the low pressure condition present in the venture while it is operating as a sound suppressor, the improvement comprising:
Dependencies are inferred from the claim text.