Invention Grant
- Patent Title: Multilayer lubrication coating film and internal combustion engine piston using the coating film
- Patent Title (中): 多层润滑涂膜和内燃机活塞采用涂膜
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Application No.: US13017689Application Date: 2011-01-31
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Publication No.: US08960072B2Publication Date: 2015-02-24
- Inventor: Kenji Suto , Kota Tokubi , Tomonori Saito , Yoshimi Kuroda
- Applicant: Kenji Suto , Kota Tokubi , Tomonori Saito , Yoshimi Kuroda
- Applicant Address: JP Tokyo
- Assignee: Honda Motor Co., Ltd
- Current Assignee: Honda Motor Co., Ltd
- Current Assignee Address: JP Tokyo
- Agency: Westerman, Hattori, Daniels & Adrian, LLP
- Priority: JP2010-026909 20100209
- Main IPC: F16J1/08
- IPC: F16J1/08 ; F16J1/01

Abstract:
A multilayer lubrication coating film is formed on the outer surface of an object to be coated. The multilayer lubrication coating film comprises a lower-layer coating film formed on an outer surface of the object to be coated, and an upper-layer coating film formed on a surface of the lower-layer coating film. The lower-layer coating film has a higher Vickers hardness than the Vickers hardness of the object to be coated.
Public/Granted literature
- US20110192279A1 MULTILAYER LUBRICATION COATING FILM AND INTERNAL COMBUSTION ENGINE PISTON USING THE COATING FILM Public/Granted day:2011-08-11
Information query