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:
Jul. 23, 1991
Filed:
Jan. 18, 1991
Thomas E Jenkins, Louisville, KY (US);
General Electric Company, Louisville, KY (US);
Abstract
A refrigerator liner of a vacuum formed plastic with a thickness of about 0.007' to 0.050' has each corner formed without crinkling when thermal insulation material is foamed against the outer surface of the liner. The non-crinkling of each corner of the refrigerator liner is accomplished through forming each of the corners with a flat surface having its periphery as a circle during vacuum forming of the refrigerator liner rather than with a spherical radius. This enables the flat surface to be placed in tension when moved against a corresponding flat surface of a foam plug by the pressure produced during foaming of the foamed thermal insulation material. This results in each corner having a central portion with a convex cross section and an outer portion surrounding the central portion and concave in cross section whereby it does not appear to be crinkled.