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:
Feb. 06, 1979
Filed:
Nov. 17, 1977
Applicant:
Inventors:
Alva L Frye, Brentwood, TN (US);
Herbert M Stewart, Nashville, TN (US);
Assignee:
Aladdin Industries, Incorporated, Chicago, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A47J / ;
U.S. Cl.
CPC ...
215 / ; 220420 ; 220455 ; 220458 ;
Abstract
A vacuum bottle construction is disclosed in which the vacuum filler is formed from a pair of concentric thin wall metal cylinders. The cylinders are formed of a thin metallic material, such as mild steel, which is unable to withstand the pressure differential of atmospheric pressure on one side and a vacuum on the other side. To prevent collapse of the filler a rigid jacket is provided over the outer wall in intimate contact therewith to prevent collapse.