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:
Aug. 04, 1998
Filed:
Mar. 18, 1996
Michael Bittmann, Munchen, DE;
Webasto Thermosysteme GmbH, Stockdorf, DE;
Abstract
A motor vehicle heating device with a burner which has a combustion chamber which is coaxially surrounded, at least in part, by a heat exchanger which has a closed end at an end of the combustion chamber opposite that at which the burner is located, and which has an annular space, which is defined between an outer wall and inner wall, through which a liquid heat transfer agent flows. The heat exchanger is made of a one-piece construction, so that the end of the heat exchanger joins its outer and inner walls, and at the same time, its inside faces the combustion chamber. By this construction, the liquid-carrying part is essentially formed by a single part, so that no integrity problems can occur between the liquid-carrying annular space and the exhaust gas-carrying interior of the heating device and production costs are reduced.