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:
Nov. 19, 1985
Filed:
Aug. 22, 1983
Robert Munro, Lymington, Hampshire SO4 9GP, GB;
David A Parker, Rugby, Warwickshire CV23 8HB, GB;
Neil A Graham, Coventry, Warwickshire CV6 2JJ, GB;
Other;
Abstract
A piston for an internal combustion engine is provided with a crown portion heat insulated from the remainder of the piston over all or substantially all of the area of the crown, to reduce the transfer of heat from the crown to the remainder of the piston. The insulation may be by a chamber extending across the piston and the chamber may contain a vacuum. Such a piston can be manufactured by a process involving roll-bonding aluminum or an aluminum alloy to a ferrous material in order to secure a crown of ferrous material to the remainder of the piston made from aluminum or aluminum alloy.