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. 03, 2001
Filed:
Apr. 02, 1999
Peter Pelz, Geretsried, DE;
Other;
Abstract
A reciprocating internal combustion engine has at least one cylinder with a reciprocating piston arranged therein. Two parallel crankshafts connected by a toothing rotate in opposite direction. Each one of the pistons has first and second rigid connecting rods, wherein the first connecting rod is connected to the first crankshaft and the second connecting rod is connected to the second crankshaft. Various connecting rod arrangements are possible. In one embodiment, the connecting rods are curved toward one another and toward a center axis of the cylinder. The piston may have two connecting rod bearings spaced apart in the direction in the spacing between the crankshafts. The first connecting rod connected to the first crankshaft may be connected to a connecting rod bearing that is remote from the crankshaft, and the second connecting rod connected to the second crankshaft may be connect to the other connecting rod bearing remote from the second crankshaft. The shape of the piston may vary, for example, a disc-shaped piston bottom with a central bottom projection is provided. The projection has an end portion to which the connecting rods are connected, and a constriction is provided between the bottom and end portion. In an another design a piston with curved cross-section having a concave top side and convex bottom side is provided. The concave top side faces the combustion chamber, and the convex bottom side has the connecting rods connected thereto.