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:
Mar. 28, 1995
Filed:
Nov. 12, 1992
Applicant:
Inventors:
Ernest D Stiles, St. Clair Shores, MI (US);
Dale L Hartsock, Livonia, MI (US);
Assignee:
Ford Motor Company, Dearborn, MI (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01N / ; F01N / ;
U.S. Cl.
CPC ...
138149 ; 138110 ; 2989008 ;
Abstract
This invention is directed to a composite pipe comprising three layers adjacent to one another. It consists of a thin-walled metallic inner liner, a thermally insulating ceramic material layer, and an outer casing of a non-metallic material. The composite pipe is useful in automotive applications such as exhaust gas systems to reduce the thermal energy transfer from the exhaust pipe along the length of the pipe, reduce sound transmission, hinder corrosion and reduce weight.