Patent Number: 6,305,054

Title: Exhaust system clamp

Abstract: The present disclosure relates to a clamp for sealing a lap joint formed by a first pipe inserted within a second pipe. The clamp includes a strap having a concave inner curvature that curves about a central axis. The strap includes a first axial end positioned opposite from a second axial end. A first axial portion of the strap is positioned at the first axial end, and a second axial portion of the strap is positioned at the second axial end. The first axial portion has a cylindrical inner surface adapted to provide a seal about the first pipe, and the second axial portion has a cylindrical inner surface adapted to form a seal about the second pipe. A radial in-step connects the first and second axial portions. The radial in-step provides a diameter transition between an inner diameter D.sub.1 of the first axial portion and an inner diameter D.sub.2 of the second axial portion such that the inner diameter D.sub.1 is larger than the inner diameter D.sub.2. The clamp further includes a single fastener for tightening both the first and second axial portions at the lap joint.

Inventors: Imes; Julian A. (Bloomington, MN), Herman; John T. (Dellwood, MN), Wagner; Wayne M. (Apple Valley, MN), Shields; James P. (Fairbank, IA)

Assignee: Donaldson Company, Inc.

International Classification: F01N 7/18 (20060101); F16L 33/02 (20060101); F16L 33/06 (20060101); B65D 063/00 (); B65D 045/37 ()

Expiration Date: 10/23/2018