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:
Jul. 14, 2009
Filed:
Apr. 21, 2005
Masaharu Tochigi, Oyama, JP;
Takashi Shida, Oyama, JP;
Keiji Fukaura, Oyama, JP;
Takumi Akatsuka, Oyama, JP;
Masaharu Tochigi, Oyama, JP;
Takashi Shida, Oyama, JP;
Keiji Fukaura, Oyama, JP;
Takumi Akatsuka, Oyama, JP;
Showa Denko K.K., Tokyo, JP;
Abstract
A method of inspecting a heat exchanger for pressure resistance. The heat exchanger includes plural hollow refrigerant channel portions arranged in parallel and each having joints inside thereof, air passing clearances between respective adjacent pairs of refrigerant channel portions, and fins in the respective air passing clearances. The heat exchanger interior is pressurized, irradiated with light from one side, and a monochromatic image of the exchanger is captured by CCD cameras from the other side before and after the pressurization. Each image is divided into dots, luminance data of the dots of each image is converted into binary data items of white areas and black areas with reference to a threshold value, and the number of black areas is counted. The pressure resistance of the heat exchanger is judged based on an increase in the number of black areas after pressurization from the number of black areas before pressurization.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile