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:
May. 17, 2016
Filed:
Sep. 12, 2012
Yusuke Taki, Sagamihara, JP;
Yohei Takahashi, Yokohama, JP;
Yujiro Urakawa, Kawasaki, JP;
NIKON CORPORATION, Tokyo, JP;
Abstract
A composite plastic member includes a first stacked body comprised of a plurality of chromium layers stacked on a plastic substrate; and a second stacked body comprised of a plurality of chromium nitride layers stacked on the first stacked body. Each of the first and second stacked bodies is formed such that a lower-hardness layer having a lower hardness than upper and lower layers which contact with and sandwich the lower-hardness layer therebetween and a higher-hardness layer having a higher hardness than upper and lower layers which contact with and sandwich the higher-hardness layer therebetween are alternately stacked in a stacking direction; and a thickness of a higher-hardness chromium nitride layer is not more than 40% of a thickness of a lower-hardness chromium nitride layer in the second stacked body. The composite plastic member has high wear resistance and satisfactory sliding performance, and the conductivity and excellent outer appearance.