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:
Oct. 28, 1986
Filed:
Feb. 17, 1984
Alvin M Marks, Athol, MA (US);
Other;
Abstract
A heating chamber is mounted on a first axis of rotation, and revolves through an angle .OMEGA. at a constant angular velocity. The first axis of rotation is adjustable through an angle .theta. to the horizontal according to the geographic latitude, and through an angle .phi. to the axis of rotation according to the season. The heating chamber is an insulated cavity with a small aperture. The sun's rays are focussed along a second axis normal to the first axis through a small aperture into the heating chamber. The heating chamber contains a phase change material which melts at about 180.degree. C., which provides heat at that temperature after sundown. In one embodiment, a structure includes a platen to supply heat to a cooking utensil. The platen has heat-conducting ribs attached to its bottom side, which dip into the phase-change material contained in an enclosure under the platen. The surface of the platen is maintained level by gravity.