Patents by Inventor Daewon Son

Daewon Son 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: 5266011
    Abstract: An oil distribution gear pump with an integrate air pump. This pump comprises a main body being divided into an oil distribution chamber and an oil recirculation chamber, these chambers being adapted for distributing oil to the outside and recovering oil from oil bubbles, respectively, and communicating with each other through a bubble circulation conduit and an oil recovering port. The eccentric rotary gear assembly for sucking up oil and feeding the oil to the oil distribution chamber includes a drive gear internally engaging with an eccentric rotary gear. This gear assembly is elastically supported by a compression coil spring such that the drive gear elastically advances and retracts when the eccentric rotary gear eccentrically rotates. The first and second floats are arranged in the oil distribution chamber and the oil recirculation chamber for closing or opening the bubble circulation conduit and the oil recovering port, respectively.
    Type: Grant
    Filed: January 13, 1993
    Date of Patent: November 30, 1993
    Assignee: Dong Hwa Instrument Co., Ltd.
    Inventor: Daewon Son