Patents by Inventor Ou Ma

Ou Ma 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).

  • Door control apparatus
    Patent number: 12257694
    Abstract: A door control apparatus is provided. The door control apparatus comprises a processor, a frame that includes a top frame portion and a bottom frame portion, a door control arm that is integrated as part of the frame and configured to move vertically between the top frame portion and the bottom frame portion, the door control arm including a door handle contact protrusion having a curve shaped end part, the door handle contact protrusion extending substantially perpendicularly relative to the frame, and a door interaction arm that is disposed on a surface of the frame and extends substantially perpendicularly relative to the frame.
    Type: Grant
    Filed: June 3, 2022
    Date of Patent: March 25, 2025
    Assignee: University of Cincinnati
    Inventors: Ou Ma, Samuel King, Yufeng Sun
  • Door Control Apparatus
    Publication number: 20220388180
    Abstract: A door control apparatus is provided.
    Type: Application
    Filed: June 3, 2022
    Publication date: December 8, 2022
    Inventors: Ou Ma, Samuel King, Yufeng Sun
  • Six degrees of freedom free-motion test apparatus
    Patent number: 9228917
    Abstract: The present invention is a test object apparatus for testing space objects. The test apparatus provides the space object with six degrees of freedom for testing. The test apparatus is statically balanced in order to achieve a microgravity condition for testing.
    Type: Grant
    Filed: January 14, 2013
    Date of Patent: January 5, 2016
    Assignee: Arrowhead Center, Inc.
    Inventors: Ou Ma, Ken Ruble
  • Multi-degree-of-freedom test stand for unmanned air vehicles
    Patent number: 8353199
    Abstract: The invention is a multiple degree-of-freedom test stand for unmanned air vehicles, and is particularly useful for small or micro unmanned air vehicles. The stand is gravity balanced using springs such that no weight of any part of the stand becomes a burden to the tested vehicle when it flies while constrained to the stand. A joint and a plurality of members are used to enable multiple degrees of freedom.
    Type: Grant
    Filed: April 19, 2010
    Date of Patent: January 15, 2013
    Assignee: Arrowhead Center, Inc.
    Inventors: Ou Ma, Carlos E. Ortega, Ken Ruble, Qi Lu
  • Apparatus and method for reduced-gravity simulation
    Patent number: 8152699
    Abstract: The present invention comprises an apparatus and method for gravity-balanced apparatuses for training humans for space exploration and other applications. The embodiment of the simulation apparatus is less expensive to build and safe to operate and adaptable to numerous applications, including but not limited to theme parks, museums, training facilities, educational/research labs, and others, for people to experience walking and other perambulations in lower or zero gravity environments. The present invention is statically-balanced and comprises a spring apparatus that is easily adjusted. An embodiment of the present invention provides an apparatus and method for simulating walking in a zero-gravity or reduced-gravity environment.
    Type: Grant
    Filed: June 18, 2009
    Date of Patent: April 10, 2012
    Assignee: Arrowhead Center, Inc.
    Inventors: Ou Ma, Jiegao Wang