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:
Apr. 22, 1980
Filed:
Nov. 22, 1976
William F Russell, Glenview, IL (US);
Other;
Abstract
An energy conservation indicator for use in an enclosed locality adapted to be heated and/or cooled to temperatures maintained within limits recommended for energy conservation purposes comprises a thin disc of transparent material, having a backing provided with contrastingly colored printed matter and images of parts of a human face, such as eyes and eyebrows. A first configuration of encapsulated liquid temperature-sensitive crystals is arranged between the disc and the backing below the eyes to represent the image of a mouth on the face. The liquid crystals are of such a nature as to reflect incident white light through the disc at temperatures between a recommended upper temperature for heating and a recommended lower temperature for cooling, and said first configuration of the crystals constitutes an upwardly arced curve which, when activated, imparts to the face a frowning countenance to thereby indicate to an observer that the temperature in the locality is not within the recommended limits. The indicator may include a second configuration of encapsulated liquid crystals between the disc and the backing, arranged and adapted, when activated, to impart to the face an image of a smiling countenance.