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:
Jun. 03, 1997
Filed:
May. 23, 1995
Isidor Fritschi, Andelfingen, CH;
Sigg AG, , CH;
Abstract
A thermally insulating flask having two containers of flow-pressed aluminum, wherein an inner container is placed inside and at a distance from an outer container. The inner container forms a flask neck at the top of the inner container, which is connected in an air-tight manner with the outer container. Both containers are connected at the top by a material of low thermal conductivity, for example chrome-nickel steel, in an air-tight and rigid manner. The connecting piece can be constructed from a composite-plated chrome-nickel steel laminate, in which the aluminum layer has been removed by a lathe, leaving two collar rims, to allow welding to the aluminum containers, while the remaining chrome-nickel steel layer forms the mechanical connection which has low thermal conductivity.