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. 12, 2020
Filed:
Apr. 06, 2018
Michael Khonsari, Baton Rouge, LA (US);
Cong Shen, Rochester Hills, MI (US);
Michael Khonsari, Baton Rouge, LA (US);
Cong Shen, Rochester Hills, MI (US);
Board of Supervisors of Louisiana State University and Agricultural and Mechanical College, Baton Rouge, LA (US);
Abstract
Piston rings are disclosed that relate to seal performance in piston containing machines such as piston driven engines. The piston rings may include a piston ring contact side for contact with a cylinder wall in which the piston ring contact side has multiple cavities configured on alternating edges of the piston ring contact side. Certain examples of these piston rings have cavities with an average depth that is less than 1/300of the piston ring width and which collectively occupy a cavity area percentage of the piston ring contact side that is between 20% and 30% of the total area of the piston ring contact side.