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. 17, 1989
Filed:
May. 09, 1988
Edward J Safranek, Arlington Heights, IL (US);
F & B Mfg. Co., Gurnee, IL (US);
Abstract
A high efficiency marine alternator system employs a marine engine flywheel as a rotor in an alternator. The rotor has a cup-shaped portion defined by an outer circular wall, and wherein a stator is received within the cup-shaped portion. The rotor is formed of a one-piece net ductile iron casting by the lost foam process. Magnets are mounted on an inner surface of the circular wall such that as the rotor rotates, the magnets move past pole faces of the stator. A starter motor ring gear is mounted on an outer surface of the circular outer wall. By minimizing a thickness of the outer circular wall on which the magnets are directly mounted and by direct mounting of the magnets on an inner surface of the outer wall, for a given diameter of the rotor/flywheel, the rotor magnets can be mounted at a maximum radius from a central rotational axis of the rotor, thus increasing linear velocity of the magnets as they move past the rotor faces, and improving efficiency of the alternator. Additionally, in conjunction with the high efficiency alternator, a Hall effect device timing system is provided together with a high efficiency charging system.