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:
Oct. 02, 2012
Filed:
Feb. 20, 2007
Satoru Sakae, Osaka, JP;
Kouichi Kita, Osaka, JP;
Hiroto Nakajima, Osaka, JP;
Daikin Industries, Ltd., Osaka, JP;
Abstract
For the supply of refrigeration oil accumulated in an oil return compressor () into a higher stage compression mechanism (), an oil sump in a discharge pressure space defined in the casing of the oil return compressor () and the downstream side of an oil separator () are connected together through an oil return passageway (). And, a pressure reducing means () for the reduction in pressure of refrigerant flowing towards the oil separator () from the oil return compression mechanism () is disposed in place between the oil return compressor () and the oil separator () in a discharge pipe () of a lower stage compression mechanism ().