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:
Apr. 02, 2019
Filed:
Feb. 21, 2012
Stephen M. Hsu, Germantown, MD (US);
Yang Jing, Washington, DC (US);
Yufei MO, Washington, DC (US);
Dongyun Hua, Washington, DC (US);
Ming Chen, Washington, DC (US);
Stephen M. Hsu, Germantown, MD (US);
Yang Jing, Washington, DC (US);
Yufei Mo, Washington, DC (US);
Dongyun Hua, Washington, DC (US);
Ming Chen, Washington, DC (US);
The George Washington University, Washington, DC (US);
Abstract
The present invention relates to techniques for lowering friction between moving surfaces of, for example, an internal combustion engine. Friction reduction is achieved by adding texture modifications to surfaces that come in contact with each other. Texture modifications that reduce friction in accordance with the present invention include dimples of varying geometries and depths ion the surfaces of components. The present invention also relates to the fabrication technique for applying the textures to the surfaces. In another embodiment, the patterned soft mask is applied onto a large surface (flat or curved including cylindrical rollers surfaces) to be followed by electrochemical etching to imprint the textures onto the component. And, in another embodiment, a diamond-like-carbon (DLC) film may be applied to the turbine component to also reduce friction.