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.:

US 8412028 B1

PDF
Full Text
Expired
Date of Patent:
Apr. 02, 2013

Filed:

May. 30, 2008
Applicant:

Hongfeng Zhu, Zhejiang, CN;

Inventor:

Hongfeng Zhu, Zhejiang, CN;

Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F24B 1/18 (2006.01);
U.S. Cl.
CPC ...
Abstract

The present invention relates to an electric fireplace having a 3D flame simulating assembly, which comprises housing, an imaging light source, a light processing unit and a simulated charcoal disposed in front of the inner cavity of said housing. A translucent imaging screen is positioned against the back of the simulated charcoal and a second translucent imaging screen is positioned just in front of and parallel to the translucent imaging screen. The light emitted from the imaging light source is projected onto the imaging screen to form a primary simulated flame image after passing through the light processing unit, and portion of which is further projected onto the second imaging screen to form a secondary simulated flame image after passing through the image screen. If the distance between the imaging screen and the second imaging screen is kept to be enough, a visual effect of rising and leaping simulated flames with spatial depth is generated due to the different front to back positions of the flame images imaged on both screens.


Find Patent Forward Citations

Zhu, Hongfeng. (2013). Three-dimensional flame simulating electric fireplace (U.S. Patent No. 8412028). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8412028

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