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:
Apr. 10, 2001
Filed:
Sep. 17, 1999
Takahiro Okamoto, Shiga, JP;
Yukimasa Yano, Shiga, JP;
Masaya Shigenaga, Tokyo, JP;
Toshiyuki Natsume, Shiga, JP;
Daikin Industries, Ltd., Osaka, JP;
Abstract
A refrigerant circuit is formed by connecting an outdoor unit (,) and an indoor unit (,) to each other with communication piping (,) including a gas pipe (,) and a liquid pipe (,). An alternative refrigerant R-410A is used as a refrigerant to be circulated through the refrigerant circuit. For middle-sized and large-sized air conditioners whose rated cooling power (JIS C 9612) is not less than 4.0 kW, a gas pipe (,) having an outer diameter of about 9.5 mm (with wall thickness 0.8 mm) is used. For small-sized air conditioners whose rated cooling power (JIS C 9612) is less than 4.0 kW, a gas pipe (,) having an outer diameter of about 7.9 mm (with wall thickness 0.8 mm) is used.