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:
Jul. 20, 1993
Filed:
Jun. 18, 1991
Thomas H Williams, Doraville, GA (US);
Other;
Abstract
Novel reciprocating engines which feature conversion units each formed of an expansion cylinder, a compression cylinder and a passageway connecting the two. Pistons in the cylinders are preferably connected via a four-bar or other linkage to the crank so that the compression piston remains at substantially top dead center for a substantial portion of the stroke of the expansion piston, and vice versa. Communication between the cylinders via the passageway may thus be continuously open with no substantial pressure drop between cylinders. Fuel may be injected into the air or other gas moving between cylinders giving an internal combustion engine, or the gas may be heated by external means. Devices according to this concept limit peak pressure and temperatures, resulting in the formation of fewer nitrous oxides. The expansion displacement volume may be larger than the compression displacement volume, and the strokes of the compression and expansion pistons may differ, in order to provide fuller expansion of the combustion gases and increase efficiency.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile