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:
Oct. 05, 2004
Filed:
Nov. 04, 2002
Pao C Pien, Marco Island, FL (US);
Other;
Abstract
An engine having a piston-cam assembly powertrain consisting of a rocking yoke assembly that oscillates about its middle point to rotate a multiple-lobe cam. The mechanism is so constructed that cam followers at both ends of the oscillating yoke make contact with the surface of the multiple-lobe cam. When the rocking yoke is oscillated it causes rotation of the camshaft. Alternatively, the rotating cam can cause oscillation of the rocking yoke. The multiple-lobe cam is formed of two identical facing plates having sufficient width to provide an annular groove on the interior face of each plate. Such cam plates are spaced a sufficient width to accommodate the rocking yoke assembly between such cam plates with a pivoting bearing riding within such annular groove. Two connecting rods link the ends of the rocking yoke to two pistons within two parallel cylinders to form a piston-cam assembly powertrain. A number of rocking yoke assemblies consisting of two parallel cylinders can be arranged around the camshaft in rows and/or columns for obtaining required power output.