Patents by Inventor Sam-Dong Hwang

Sam-Dong Hwang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5789832
    Abstract: An improved rotor shaft for an alternator reduces the number of corresponding parts thereof. The rotor shaft includes a reinforced insert embedded within a shaft for preventing buckling, the shaft being molded using an engineering plastic; a threaded portion formed at one end of the shaft; a pulley engaging portion formed at the other end of the shaft; a rear bearing engaging portion inwardly formed from the pulley engaging portion; a spline inwardly formed from the rear bearing engaging portion for tightening the rotor; and a small diameter portion outwardly formed from the threaded portion.
    Type: Grant
    Filed: May 8, 1997
    Date of Patent: August 4, 1998
    Assignee: Mando Machinery Corporation
    Inventor: Sam-Dong Hwang