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:
Mar. 14, 2017
Filed:
Oct. 23, 2015
Applicant:
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Inventors:
Tomohisa Sakaguchi, Kyoto, JP;
Masaru Fujita, Osaka, JP;
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
F21V 8/00 (2006.01); F21V 33/00 (2006.01); A47L 9/30 (2006.01); A47L 9/02 (2006.01); F21W 131/30 (2006.01); F21Y 101/00 (2016.01);
U.S. Cl.
CPC ...
G02B 6/0038 (2013.01); A47L 9/02 (2013.01); A47L 9/30 (2013.01); F21V 33/0044 (2013.01); G02B 6/0073 (2013.01); F21W 2131/30 (2013.01); F21Y 2101/00 (2013.01);
Abstract
A light guide plate which guides light from light sources at both ends and reflection surface grooves having plural types of reflection surfaces formed on a reverse side of the light guide plate are provided in a direction perpendicular to a front direction of a suction tool, thereby forming light rays radiating to a floor surface from three directions and lighting the floor surface as the surface to be cleaned in front of the suction tool over a wide range.