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:
Jan. 12, 2021
Filed:
Aug. 26, 2016
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Shingo Oyagi, Osaka, JP;
Yoshinori Ishida, Kyoto, JP;
Hirotaka Kawabata, Shiga, JP;
Hiroyuki Fukuhara, Shiga, JP;
Abstract
A refrigerant compressor reserves lubricating oil in a sealed container, and accommodates therein an electric component, and a compression component which is driven by the electric component and compresses a refrigerant. At least one of slide members included in the compression component is made of an iron-based material, and an oxide coating film comprising a composition A portion, a composition B portion, and a composition C portion is provided on a slide surface of the iron-based material. The composition A portion is a portion containing diiron trioxide (FeO) which is more in quantity than other substances, and is, for example, an outermost portion (). The composition B portion is a portion containing triiron tetraoxide (FeO) which is more in quantity than other substances and containing a silicon (Si) compound, and is, for example, an intermediate portion (). The composition C portion is a portion containing triiron tetraoxide (FeO) which is more in quantity than other substances and containing silicon (Si) which is more in quantity than silicon (Si) of the composition B portion, and is, for example, an inner portion ().