Patent ID: 7464464

Claim:
A method for producing a cover for an end of a motor vehicle exhaust pipe, the method steps directly following each other and including: a) making a circular blank ( 10 ) from a steel plate, b) drawing in a plurality of deep-drawing operations a plurality of cup-shaped beakers ( 10 . 1 , 10 . 2 , 10 . 3 , 10 . 4 ) each with a bottom ( 11 . 4 ) inclined with respect to a longitudinal axis ( 25 ), and having diameters (D 1 , D 2 , D 3 , D 4 ) that are uniform over an entire length (L 1 , L 2 , L 3 , L 4 ) of a shell ( 12 . 4 ), but are decreased and the shell lengths (L 1 , L 2 , L 3 , L 4 ) are increased upon each of the deep drawing operations, resulting in a beaker with a bottom ( 11 . 4 ) inclined with respect to a longitudinal axis ( 25 ), c) punching a centered hole ( 13 ) through the bottom ( 11 . 4 ) of the beaker and leaving a rim ( 14 ) which is ring-shaped around the hole ( 13 ) and between the hole ( 13 ) and the shell ( 12 . 4 ), d) cutting the shell ( 12 . 4 ) vertically with respect to the longitudinal axis ( 25 ) of the beaker to a required length (Lo) and cutting a condensate drain opening ( 16 ) and a fastening hole into the shell, e) bending the rim ( 14 ) of the bottom ( 11 . 4 ) parallel with respect to the longitudinal axis ( 25 ) and subsequently crimping into the beaker to form an end ( 17 ) shaped as an arc of a circle, and f) tapering an end section ( 18 ) on the cut open front ( 15 ) of the beaker for decreasing the diameter.