Patents by Inventor Key Dong CHOI

Key Dong CHOI 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).

  • Publication number: 20130068877
    Abstract: An existing bottom-adjustable propeller-type flying object requires a device having a complex structure constructed through the combination of various components such as a servo, a control plate, and a hinge to control the rotor pitch at every moment and operate an adjustable blade for flight control. The bottom-adjustable propeller-type flying object of the disclosure includes a circular frame with a fixing plate and a protective plate installed at a lower portion of a shaft of a power propeller mounted to the central shaft, and an adjusting motor having an adjustable propeller. The flying object moves up or down by using force of the wind generated downward due to the rotation of the power propeller. The flying object makes a hovering flight, and leftward, rightward, forward, and backward flights by using the force of the wind generated due to the rotation of the adjustable propellers mounted on two adjusting motors.
    Type: Application
    Filed: May 3, 2011
    Publication date: March 21, 2013
    Applicant: SUNTECH ENTERPRISES
    Inventors: Key Dong Choi, Key Nam Choi
  • Publication number: 20110024553
    Abstract: A bottom blade type vehicle includes a fixed screw-pitch leaf horizontally mounted taking a center axis as the center; a power part mounted above the leaf; a controlling part mounted under the leaf; a first and a second fixing plates and a first and a second protecting plates being crossed each other in a cross-shape taking the controlling part as the center, one end of the first and the second fixing plates and the first and the second protecting plates connected to the controlling part and the other end of them connected to a round frame; a bridge plate vertically fixedly mounted under the round frame; and a first and a second adjusting controlled by a controlling device of the controlling part, wherein the first and the second adjusting blades are mounted on the first and the second protecting plates respectively.
    Type: Application
    Filed: July 29, 2009
    Publication date: February 3, 2011
    Applicants: Hanley (China) Limited, Suntech Enterprises
    Inventor: Key Dong CHOI