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:
Jan. 31, 1989
Filed:
Jan. 11, 1988
Charles E Kraus, Austin, TX (US);
Charles B Lohr, Austin, TX (US);
Excelermatic Inc., Austin, TX (US);
Abstract
In an adiabatic internal combustion engine with a piston movably disposed in a cylinder to which air and fuel are admitted for combustion therein and from which the gases generated during combustion are discharged after extraction of energy therefrom, the cylinder includes a piston guide and seal structure having piston seal rings associated therewith and has a wall structure of heat resistant material and the piston has a guided section adapted to move back and forth through the guide and seal structure and a cap of heat resistant material disposed on top of the guided piston section and having a cylindrical side wall slightly spaced from the heat resistant cylinder wall.