Patents by Inventor Dawei Dong

Dawei Dong 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: 20210300534
    Abstract: A battery powered helicopter uses one or more torque arms as the power source directly driving the main rotor blades, causing them to rotate. The helicopter does not require a combustion engine, a clutch, a reducer, a tail driver, a tail boom, a tail rotor, or a fuel supply system. The output shaft of the high-energy motor is coaxial with the main rotor shaft. The centrifugal force of one or more motor(s) is negligible or minimized. The torque arm assembly includes a plurality of torque arms. Each of the torque arms of the plurality of torque arms includes a propeller and a driving system. The torque arm propellers are hinged so that they can move between a first closed position and a second open position to institute an autorotation safety system.
    Type: Application
    Filed: April 14, 2021
    Publication date: September 30, 2021
    Inventor: Dawei Dong
  • Patent number: 11130565
    Abstract: A battery powered helicopter uses one or more torque arms as the power source directly driving the main rotor blades, causing them to rotate. The helicopter does not require a combustion engine, a clutch, a reducer, a tail driver, a tail boom, a tail rotor, or a fuel supply system. The output shaft of the high-energy motor is coaxial with the main rotor shaft. The centrifugal force of one or more motor(s) is negligible or minimized. The torque arm assembly includes a plurality of torque arms. Each of the torque arms of the plurality of torque arms includes a propeller and a driving system. The torque arm propellers are hinged so that they can move between a first closed position and a second open position to institute an autorotation safety system.
    Type: Grant
    Filed: April 14, 2021
    Date of Patent: September 28, 2021
    Inventor: Dawei Dong
  • Publication number: 20200282847
    Abstract: A battery powered helicopter uses one or more torque arms as the power source directly driving the main rotor blades, causing them to rotate. The helicopter does not require a combustion engine, a clutch, a reducer, a tail driver, a tail boom, a tail rotor, or a fuel supply system. The output shaft of the high-energy motor is coaxial with the main rotor shaft. The centrifugal force of one or more motor(s) is negligible or minimized. The torque arm assembly includes a plurality of torque arms. Each of the torque arms of the plurality of torque arms includes a propeller and a driving system.
    Type: Application
    Filed: March 26, 2020
    Publication date: September 10, 2020
    Inventor: Dawei Dong
  • Patent number: 10723449
    Abstract: A helicopter uses electric propeller torque arm as power source directly driving main rotor to rotate. The helicopter may be battery powered. The helicopter may be without an engine, a clutch, a reducer, a tail driver, a tail boom, a tail rotor and a fuel supply system. The main design goal is to have the output shaft of the high-energy motor being coaxial with the main rotor shaft or having output shafts of a plurality of motors as close as possible to the main rotor shaft. The centrifugal force of the motor(s) is negligible or minimized. The torque arm assembly includes a plurality of torque arms. Each of the torque arm of the plurality of torque arms includes a propeller and a driving system. In the case of a malfunction, the helicopter's main rotor will spin like a maple leaf and will facilitate the spin autorotation landing.
    Type: Grant
    Filed: November 4, 2018
    Date of Patent: July 28, 2020
    Inventor: Dawei Dong
  • Publication number: 20200130822
    Abstract: A helicopter uses electric propeller torque arm as power source directly driving main rotor to rotate. The helicopter may be battery powered. The helicopter may be without an engine, a clutch, a reducer, a tail driver, a tail boom, a tail rotor and a fuel supply system. The main design goal is to have the output shaft of the high-energy motor being coaxial with the main rotor shaft or having output shafts of a plurality of motors as close as possible to the main rotor shaft. The centrifugal force of the motor(s) is negligible or minimized. The torque arm assembly includes a plurality of torque arms. Each of the torque arm of the plurality of torque arms includes a propeller and a driving system. In the case of a malfunction, the helicopter's main rotor will spin like a maple leaf and will facilitate the spin autorotation landing.
    Type: Application
    Filed: November 4, 2018
    Publication date: April 30, 2020
    Inventor: Dawei Dong
  • Patent number: 10604241
    Abstract: A battery powered helicopter uses one or more torque arms as the power source directly driving the propeller to rotate. The helicopter does not require a combustion engine, a clutch, a reducer, a tail driver, a tail boom, a tail rotor, or a fuel supply system. The output shaft of the high-energy motor is coaxial with the main rotor shaft. The centrifugal force of one or more motor(s) is negligible or minimized. The torque arm assembly includes a plurality of torque arms. Each of the torque arms of the plurality of torque arms includes a propeller and a driving system.
    Type: Grant
    Filed: July 29, 2019
    Date of Patent: March 31, 2020
    Inventor: Dawei Dong
  • Patent number: 10076763
    Abstract: The new invention uses a ground-based heavy payload ground vehicle, trailer, or fixed ground station to deliver agriculture chemical, power and control signals to a hinged, ground-mounted, lightweight propeller lift, boom truss module using Unmanned Aerial Vehicles (UAVs) technology to unload and suspend multiple boom truss modules, extending out to cover a large spray area. This is the newest, most practical invention that is low cost and easy to use. The total weight of each suspension boom truss modules is less than 10 kilograms and can be completely unloaded by motor-driven propellers. The suspended boom truss module is hinged on the ground vehicle, trailer or ground station. It is not necessary to apply for a flight permit from the FAA. In the field, the propeller and toxic pesticides are fixed on the suspension boom truss module and hazards can be controlled to a minimum for personnel safety.
    Type: Grant
    Filed: November 11, 2016
    Date of Patent: September 18, 2018
    Inventor: Dawei Dong
  • Publication number: 20180133741
    Abstract: At present, the Asian country's overrated agricultural plant protection sprayer UAV (Unmanned Air Vehicle) is of limited use. Each take off can only carry about 10 liters of liquid, and a flight time of about 10 minutes. This garden-level product cannot meet the needs of large-scale agricultural development. In the United States the autonomous flight control technology for civilian use is not ready. For safety reasons, FAA cannot approve certification of UAVs payload of more than 20 kilograms to 100 kilograms of agricultural spray for business user into the commercial market for the next several years. Between now and tomorrow, the market demand is to develop a new product invention that is lower cost than the agricultural aircraft and long boom spraying tractors. Today's need is for new agricultural invention with simple to use technology and higher efficiency.
    Type: Application
    Filed: November 11, 2016
    Publication date: May 17, 2018
    Inventor: Dawei Dong
  • Patent number: 7174830
    Abstract: An automated system of preparing food designed with the preparation of Chinese food in mind, the system can be adapted to whatever type of food is desired by the user. The system uses one or more robots as the “chefs”. A heating element heats a cooking pan to a desired temperature. The cooking pan includes a temperature sensing element to monitor heating of the pan and cooking of the food. When the pan is fully heated, a delivery arm empties the contents of the bowl into the cooking pan to being the actual cooking. When the contents of the pan have reached the correct temperature to be “done”, the robot empties the contents into a serving dish, and the food is ready to be eaten.
    Type: Grant
    Filed: June 5, 2003
    Date of Patent: February 13, 2007
    Inventor: Dawei Dong
  • Patent number: 7116697
    Abstract: The present invention relates to laser leveling device suitable for construction. The present invention uses a standard low cost laser diode module as the laser source and optical system. A novel method is provided to align the non-collimated beam emitted from the standard low cost laser diode module so that it is perpendicular to the rotational axis of the laser level. The present invention describes a laser level which can be operated in four different modes: dot mode, line mode, oscillation mode and plane mode. Dot mode provides two level laser dots. Line mode provides a short bright level line. Oscillation mode provides a long bright reference line. Plane mode provides a level 360 degree reference plane. The invention also provides a structure which allows two vertical reference planes which are perpendicular to each other and perpendicular to the horizontal reference plane to be generated.
    Type: Grant
    Filed: September 24, 1997
    Date of Patent: October 3, 2006
    Assignee: Black & Decker Inc.
    Inventor: Dawei Dong
  • Patent number: 6588115
    Abstract: A combination laser level line and plumb line generation device that utilizes a single laser generator module to create perpendicular lines, a level line and a plumb line. In line with the laser generator module is a first optical unit that generates a vertical line. The first optical unit has a central aperture which allows a portion of non-refracted light to pass through. The non-refracted light then passes through a second optical unit, the second optical unit creating a horizontal line. With this configuration, the single laser generator module can be used to create a pair of orthogonal lines. This allows the elements to be manufactured into a simple and inexpensive combination laser level line and plumb line generation device.
    Type: Grant
    Filed: March 18, 2002
    Date of Patent: July 8, 2003
    Inventor: Dawei Dong
  • Patent number: 6396388
    Abstract: A remote starting device intended chiefly for use in cars that utilizes a pulse signal that is generated by either an RF transmitter, a keypad, or a telephone. The pulse signal is transmitted to a rotating drive attached to the subject ignition. When the device receives the pulse signal, the rotating drive rotates to activate the ignition of the car, thereby starting the engine. The remote starting device operates independently of the car's circuitry using only the car's battery, via the cigarette lighter, as a power source. There is no need to modify the car's electrical system to install the device. This greatly simplifies installation of the device and does not jeopardize any applicable warranty on the car.
    Type: Grant
    Filed: May 26, 1999
    Date of Patent: May 28, 2002
    Inventor: Dawei Dong
  • Patent number: 6384725
    Abstract: An automatic laser detecting surveyor's rod includes a normal surveyor's rod with an automatic laser beam search unit included. When the device is activated, the search unit moves up and down the surveyor's rod until the unit detects the level of the laser beam. When the beam is detected, an alarm sounds and a digital display shows the height of the beam at the detection point. The device can be made to include a limit means for the number of passes the search unit makes without detecting the beam. If the number of passes is exceeded, the device is deactivated to save power. The user may also choose to slow the travel speed of the search unit by moving it manually.
    Type: Grant
    Filed: September 29, 2000
    Date of Patent: May 7, 2002
    Inventor: Dawei Dong
  • Patent number: 6065217
    Abstract: A laser crossline device suitable for construction includes at lease a first and a second laser beam produced by diode modules. The diode modules revolve around a horizontal axis so as to form a 360.degree. laser scanning plane that is perpendicular to the horizontal axis of the module. The plane can be adjusted with a bubble level and an adjustment screw. The two modules are situated so as to generate planes that intersect at a right angle. The line of intersection forms a plumb line. If desired, a third orthogonal plane can be added to the device. A single rotary motor drives all of the diode modules.
    Type: Grant
    Filed: December 12, 1997
    Date of Patent: May 23, 2000
    Inventor: Dawei Dong
  • Patent number: 6043879
    Abstract: A low cost automatic laser level instrument uses a solid laser diode module as the laser source. It is not necessary to adjust the laser diode module to make the center ray align with the concentric axis. The only requirement is adjusting a reflecting mirror or prism so that the center ray is vertical to the rotating axis. In other words, any ordinary diode module can be used. The device levels automatically by means of a pendulum. The pendulum remains steady under the influence of a magnetic field. The magnetic field functions as a damper, which stops the swinging of the pendulum very quickly. After adjusting the center ray to be perpendicular to the pendulum (which points to the earth's core), the device will produce a standard level line.
    Type: Grant
    Filed: December 17, 1998
    Date of Patent: March 28, 2000
    Inventor: Dawei Dong
  • Patent number: 5992029
    Abstract: A laser line device suitable for construction. The laser line instrument automatically aligns a vertical laser beam so that the beam is perpendicular to the earth's core. The laser module is connected to a pendulum which serves to automatically level the device. The pendulum is damped by permanent magnets. The bearing on which the pendulum is mounted serves as a portion of the electrical circuit of the device.
    Type: Grant
    Filed: August 14, 1997
    Date of Patent: November 30, 1999
    Inventor: Dawei Dong
  • Patent number: 5914778
    Abstract: A low cost automatic laser level instrument uses a solid laser diode module as the laser source. It is not necessary to adjust the laser diode module to make the center ray align with the concentric axis. The only requirement is adjusting a reflecting mirror or prism so that the center ray is vertical to the rotating axis. In other words, any ordinary diode module can be used. The device levels automatically by using a knife edge that is propped up by a universal ring. The pendulum remains steady under the influence of a magnetic field. The magnetic field functions as a damper, which stops the swinging of the pendulum very quickly. After adjusting the center ray to be perpendicular to the pendulum (which points to the earth's core), the device will produce a standard level line.
    Type: Grant
    Filed: June 1, 1998
    Date of Patent: June 22, 1999
    Inventor: Dawei Dong
  • Patent number: 5864956
    Abstract: A combination of square alloy rulers with precisely machined planes, each ruler unit having two 1.5v batteries and two bubble levels to level in all directions. A line generator is mounted in front of a laser diode module. This basic laser line ruler unit can produce an accurate laser level line or plumb line after it is calibrated. By adjusting the calibrating knob, the laser line ruler will produce a precise level line or plumb line when the level bubbles are centered. Putting a properly aligned level line unit and a properly aligned plumb line unit together will produce a cross line in front of the combination. Adding at least one more laser line ruler, that is combining three or more line units, will produce 90.degree. lines, 45.degree. lines, and 180.degree. lines, as well as 270.degree. lines up and down or on the right and left sides by simply adjusting the position of the relevant ruler. The housing of the ruler unit is machined with accurate planes and vertical angles.
    Type: Grant
    Filed: November 22, 1996
    Date of Patent: February 2, 1999
    Inventor: Dawei Dong
  • Patent number: 5754582
    Abstract: The present invention relates to laser leveling device suitable for construction. The present invention uses a standard low cost laser diode module as the laser source and optical system. A novel method is provided to align the non-collimated beam emitted from the standard low cost laser diode module so that it is perpendicular to the rotational axis of the laser level. The present invention describes a laser level which can be operated in four different modes: dot mode, line mode, oscillation mode and plane mode. Dot mode provides two level laser dots. Line mode provides a short bright level line. Oscillation mode provides a long bright reference line. Plane mode provides a level 360 degree reference plane. The invention also provides a structure which allows two vertical reference planes which are perpendicular to each other and perpendicular to the horizontal reference plane to be generated.
    Type: Grant
    Filed: February 25, 1997
    Date of Patent: May 19, 1998
    Assignee: Momentum Laser, Inc.
    Inventor: Dawei Dong
  • Patent number: 5517098
    Abstract: An automatic tracking mobile platform that works logically and practically. The process of making it is simple and cost efficient. An emitter is carried by the user; this emitter transmits various electromagnetic signals including infrared, visible light, laser, or ultraviolet. The platform has electromagnetic sensors connected to its front wheel which synchronously turn with it, and these three sensors are separated by panels. The panels block one sensor from the others so that only one sensor can respond to the transmitter at any one time to turn the platform left or right. An electrical motor and a mechanical steering wheel are connected to the front wheel, which drives the mobile platform. The receiver is set to screen electromagnetic signals from the transmitter so the platform can turn to the left, turn to the right, start, or stop to accomplish its automatic tracking purpose.
    Type: Grant
    Filed: May 9, 1994
    Date of Patent: May 14, 1996
    Inventor: Dawei Dong