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US 6,199,659 B1Granted
Stamp-formed muffler
AssigneeArvin Industries, Inc.
InventorJames R. Allman
Life of this patent
Estimating the term…
Abstract
A muffler includes an outer shell defining a chamber and first and second inner plates positioned to lie in the chamber. The second inner plate includes a base portion, a baffle integral with the base portion, and a tube portion integral with the base portion. The base portion includes an outer periphery defining a base portion boundary. The baffle extends between the base portion and the outer shell and the tube portion is positioned outside the boundary of the base portion.
Claims42
A muffler comprising
- an outer shell defining a chamber therein,
- a first inner plate positioned in the chamber, the first inner plate including a base portion, and
- a second inner plate positioned in the chamber, the second inner plate including first, second, third, and fourth folds partitioning the second inner plate into a base portion including an outer periphery defining a base portion boundary, a first baffle segment integral with the base portion, a second baffle segment integral with the base portion, a third baffle segment integral with the base portion, a fourth baffle segment integral with the base portion, a first tube portion integral with the base portion and positioned outside the boundary of the base portion, and a second tube portion integral with the base portion and positioned outside the boundary of the base portion, the base portions of the inner plates cooperating to define a first baffle, the base portion of the second inner plate defining a plane partitioning the outer shell into first and second outer shell portions, the first and second baffle segments extending between the base portion of the second inner plate and the first outer shell portion to define a second baffle, and the third and fourth baffle segments extending between the base portion of the second inner plate and the second outer shell portion to define a third baffle.
A muffler comprising
- an outer shell defining a chamber therein,
- a first inner plate positioned in the chamber, and
- a second inner plate positioned in the chamber, the second inner plate including first and second folds partitioning the second inner plate into a base portion, a first baffle segment, and a second baffle segment, the first and second baffle segments cooperating to define a baffle extending between the outer shell and the base portion.
A muffler comprising
- an outer shell defining a chamber therein,
- a first inner plate positioned in the chamber, and
- a second inner plate positioned in the chamber, the second inner plate including a base portion including an outer periphery defining a base portion boundary, a baffle integral with the base portion and extending between the outer shell and the base portion, and a tube portion integral with the base portion, the tube portion being positioned outside of the base portion boundary.
A muffler comprising
- an outer shell defining a chamber therein,
- a first inner plate positioned in the chamber, the first inner plate including a base portion, and
- a second inner plate positioned in the chamber adjacent to the first inner plate, the second inner plate including a base portion, the base portion of the first inner plate and the base portion of the second inner plate cooperating to define a first baffle, the second inner plate further including a second baffle integrally coupled to the base portion and a third baffle integrally coupled to the base portion, the base portion of the second inner plate defining a plane partitioning the outer shell into first and second outer shell portions, the second baffle extending between the base portion of the second inner plate and the first outer shell portion, the third baffle extending between the base portion of the second inner plate and the second outer shell portion.
A muffler comprising
- an outer shell defining a chamber therein,
- a first inner plate positioned in the chamber, and
- a second inner plate positioned in the chamber, the second inner plate including a base portion, a baffle integral with the base portion and extending between the outer shell and the base portion, and a tube portion integral with the base portion, the baffle and the outer shell cooperating to define a subchamber, the tube portion extending into the subchamber between the base portion of the second inner plate and the outer shell.
A method of assembling a muffler, the method including the steps of
- providing an outer shell, a first inner plate, and a second inner plate, the second inner plate having a base portion, a first baffle segment, a second baffle segment, and a tube portion,
- folding the first baffle segment relative to the base portion,
- folding the second baffle segment relative to the base portion and the first baffle segment so that the second baffle segment is positioned over the tube portion to define a baffle with the first baffle segment,
- positioning the first inner plate adjacent the second inner plate, and
- positioning the first and second inner plates in the outer shell.
2 more elements
A method of assembling a muffler, the method including the steps of
- providing an outer shell, a first inner plate, and a second inner plate, the second inner plate having a base portion, a first baffle segment integral with the base portion, a second baffle segment integral with the base portion, and a tube portion integral with the base portion,
- positioning the first baffle segment in an upright position relative the base portion,
- positioning the second baffle segment relative the base portion so that the second baffle is positioned over the tube portion and the first and second baffle segments cooperate to define a baffle,
- positioning the first inner plate adjacent the second inner plate, and
- positioning the first and second inner plates in the outer shell.
2 more elements
Dependencies are inferred from the claim text.