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:
Jun. 10, 2003
Filed:
Jul. 16, 2001
Applicant:
Inventors:
Ichiro Morita, Fujisawa, JP;
Masanori Kobayashi, Fujisawa, JP;
Ko Inagaki, Fujisawa, JP;
Makoto Katayama, Chigasaki, JP;
Akira Hayashi, Fujisawa, JP;
Assignee:
Matsushita Refrigeration Co., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04B 3/504 ;
U.S. Cl.
CPC ...
F04B 3/504 ;
Abstract
In a linear compressor having a compression mechanism for compressing and discharging a refrigerant, an inflammable refrigerant or a natural refrigerant such as propane, isobutane, carbon dioxide or the like is used as the refrigerant while no lubricating oil is filled up, thereby improving the system efficiency and reducing the amount of refrigerant.