The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 01, 1998
Filed:
Jul. 30, 1996
Thomas Nording, Esslingen, DE;
Alfred Utter, Waldmohr, DE;
J. Eberspacher GmbH & Co., Esslingen, DE;
Abstract
An air gap-insulated exhaust pipe with a sliding fit between two inner pipe sections in a middle area of the length of the exhaust pipe has a radial mounting of the inner pipe in the outer pipe which is provided in the area of a bend or beyond the bend, which joins the leg of the exhaust pipe in which the sliding fit is located. In terms of manufacturing technique, the radial mounting may be prepared before or after the bending of the double-pipe arrangement. The sliding fit may be prepared, even in the case of a straight exhaust pipe, manifold, or the like, by using a spacer sleeve and joint calibration of the pipe ends of the inner pipe sections, and the spacer sleeve burns off at the time the exhaust pipe is put into operation for the first time. As an alternative, the sliding fit may also be prepared by polygon calibration and rotating the pipe ends by half the pitch of the polygon.