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. 22, 2014
Filed:
Dec. 08, 2010
Peter Hofbauer, West Bloomfield, MI (US);
Peter Hofbauer, West Bloomfield, MI (US);
EcoMotors, International, Allen Park, MI (US);
Abstract
An improved oil and gas seal assembly for an internal combustion engine that includes a scraper ring retained within an annular containment groove that, in several embodiments, is formed in the side wall of the cylinder and sized to allow the scraper ring to be fitted therein. The depth of the annular containment groove is sufficient to allow the scraper ring to be expanded during assembly with the piston and during engine operation when the assembly is exposed to vibration and heat variations. A resilient element surrounds the scraper ring within the annular containment groove in order to apply inward forces to the scraper ring and keep it in contact with the movable piston skirt side wall, and also in contact with at least one wall of the groove to prevent an alternative migration path for oil or combustion gases.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile