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:
Nov. 12, 1991
Filed:
Dec. 05, 1989
Hans Bessenbach, Bad Kreuznach, DE;
Michael Crummenauer, Idar-Oberstein, DE;
Fissler GmbH, Idar-Oberstein, DE;
Abstract
A cooking utensil for use on both gas, electric and induction stoves is provided composed of a container liner of stainless steel with a comparatively low wall thickness, a comparatively thick bottom plate of aluminum or a metal of similarly good heat-conducting properties and a bottom disc that is at least partially composed of magnetizable material disposed on the outside of the bottom plate. The bottom plate disposed on the outside bottom of the container and possibly the bottom disc disposed on the outside of the bottom plate can be attached by a commonly known hammer-press technique at an increased temperature preferably with an intermediate foil of aluminum or a material of similarly good heat-conducting properties. Particularly favorable results for cookware in terms of expansion reaction and corrosion have been achieved utilizing a bottom disc of a nickel alloy having the following composition: Ni: 50-100%; Cr: up to 6%; Mo: up to 6%; Cu: up to 14%; Mn: up to 6%; Si: up to 1.5%; C: up to 0.7% and the rest Fe.