Patents by Inventor Dayao Alex Chen

Dayao Alex Chen 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).

  • Hydrostatic assembly having coupled yokes
    Patent number: 8240145
    Abstract: A hydrostatic assembly includes a pump having a yoke and an associated rotating group. The pump yoke has a bucket portion and an arm portion. At least one fluid passage extends through the pump yoke. The hydrostatic assembly also includes a motor having a yoke and an associated rotating group. The motor yoke also has a bucket portion and an arm portion. At least one fluid passage extends through the motor yoke. The arm portion of the pump yoke and the arm portion of the motor yoke have associated coupling portions for fluidly coupling the pump yoke to the motor yoke so that the at least one fluid passage in the pump yoke is in direct fluid communication with the at least one fluid passage in the motor yoke.
    Type: Grant
    Filed: February 24, 2009
    Date of Patent: August 14, 2012
    Assignee: Parker-Hannifin Corporation
    Inventors: Gerald Dyck, John Czepak, Francesco Michele Caldarella, Dayao Alex Chen, Stig Ingemar Bratt