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. 04, 2018
Filed:
Apr. 24, 2012
Applicant:
David G. Pelka, Los Angeles, CA (US);
Inventor:
David G. Pelka, Los Angeles, CA (US);
Assignee:
Seoul Semiconductor Co., Ltd., Ansan-si, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F25D 27/00 (2006.01); A47F 3/04 (2006.01); A47F 11/10 (2006.01); F25D 23/02 (2006.01); F21W 131/405 (2006.01); F21Y 115/10 (2016.01);
U.S. Cl.
CPC ...
F25D 27/00 (2013.01); A47F 3/0434 (2013.01); A47F 11/10 (2013.01); F21W 2131/405 (2013.01); F21Y 2115/10 (2016.08); F25D 23/02 (2013.01); Y10T 29/49826 (2015.01);
Abstract
An illustrative refrigeration unit door includes a transparent window portion that receives light from a light source such that the light exhibits total internal reflection within the window portion. A series of uniformly-sized prisms with non-uniform spacing ejects light from one face of the transparent window portion at angles around 60 degrees and 30 degrees. Collimated light can be used to reduce the amount of light ejected from a second face of the transparent window that is opposite the first face.