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:
Dec. 23, 1986
Filed:
Aug. 02, 1985
Dov Z Glucksman, Brookline, MA (US);
Environmental Fragrance Technologies, Ltd., New York, NY (US);
Abstract
An improved heater assembly for an aroma generating unit is disclosed. A serpentine heater element is disposed between mica insulating layers. The terminals of the heater element are extended through one of the layers. A two piece frame holds the heater element and insulating layers together. Both pieces have outer peripheral wall portions adapted for mating engagement when the frames are attached together. One of the pieces further comprises an inwardly divided flange while the other includes an inner peripheral wall portion which is shorter than the outer wall portion. When the heater assembly is joined together the insulating layers and intermediate heater element are held together between the flange and inner wall portion. A pair of opposite sides of the inner wall are spaced apart from the corresponding sides of the outer wall to form compartments which enclose the extended terminals of the heater element and the terminal ends of external power source leads such as an AC cord and related circuitry. The related circuitry includes a thermostat and rectifier circuit coupled in parallel between one pair of lead and heater terminals and a fuse coupled between the other pair.