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. 09, 1980
Filed:
Jun. 26, 1978
Joseph Mundy, Malvern, PA (US);
Matthey Bishop, Inc., Malvern, PA (US);
Abstract
A generally elliptical cylindrical metal substrate, and a method of construction thereof. A plate mandrel having a generally rectangular cross section is provided, and a first end of a web of metal substrate material is affixed to the plate mandrel. The metal substrate material preferably comprises alternate layers of planar metal foil and corrugated metal foil. As an alternative, a corrugated metal foil may be substituted for the planar foil. The metal substrate material web is wrapped around the mandrel, as by rotation of the mandrel while the web is fed off of a spool, until a substantially uniform thickness of metal substrate surrounding the mandrel is provided, a generally elliptical cylinder being formed. A second end of the web is affixed to a previous wrapping, thus forming a complete elliptical cylindrical metal substrate. The metal substrate is preferably catalyzed and used as a catalytic muffler or the like.