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:
Jun. 13, 1989
Filed:
Sep. 15, 1987
Geoffrey M Donnison, Midlands, GB;
Robert A Wordsworth, Warwickshire, GB;
Michael L Rhodes, Warwickshire, GB;
AE PLC, Rugby, GB;
Abstract
Pistons for internal combusion engines are described. The pistons comprise a crown component and a skirt component wherein the crown component consists of an iron or nickel based alloy annular portion having fitted directly therein a ceramic insert, the crown component being joined to the skirt component by an annular composite laminated member of steel and aluminium alloy the steel of the laminated member being energy beam welded to the annular portion of the crown component and the aluminum alloy of the laminated member being energy beam welded to the skirt component there being after welding a sealed, hollow, annular chamber disposed at the junction between the crown component and the skirt component. Embodiments are described having ceramic inserts of silicon nitride and including combustion bowls.