Patents Assigned to Differential Dynamics Corporation
  • Patent number: 10378506
    Abstract: Three controls, three variable gear assemblies, an optional hatch or variable propeller pitch, and a variable overlap generator (VO generator), as well as one or more commutator and brush-less free direct current generators may be used independently and together to provide constant frequency and voltage output power and to increase the amount of output power generated with the same input water flow or wind speed in a plurality of embodiments useful in wind power generation and water renewable energy generators for any of tidal and ocean current or wave conditions. Two Transgear™ assemblies side-by-side and sharing the same central shaft may comprise a constant speed motor control, produce required constant frequency and voltage and be reduced in part count and complexity.
    Type: Grant
    Filed: September 18, 2017
    Date of Patent: August 13, 2019
    Assignee: Differential Dynamics Corporation
    Inventor: Kyung Soo Han
  • Patent number: 9912209
    Abstract: Three controls, three variable gear assemblies, a hatch, and a variable torque and power generator (VT&PG), may be used independently and together to provide constant frequency and voltage output power and to increase the amount of output power generated with the same input water flow or wind speed. A three variable spur/helical gear assembly of sun and planetary gear sets is a mechanical three variable control and referred to herein as a Transgear™ gear assembly, simply Transgear. A hatch wraps around a waterwheel and may control the amount of water inlet to the system by opening and closing and may be controlled by Transgears and a VT&PG. Two Transgears may comprise a constant speed motor control and produce required frequency and voltage and be reduced in part count and complexity.
    Type: Grant
    Filed: September 16, 2016
    Date of Patent: March 6, 2018
    Assignee: Differential Dynamics Corporation
    Inventor: Kyung Soo Han
  • Patent number: 9506534
    Abstract: Infinitely variable motion control (IVMC) using Transgear gear assemblies provides rotary motion control without any requirement for connecting or disconnecting gear meshes or use of a clutch. A bevel, miter, ring or spur gear Transgear gear assembly may be defined as a gear assembly having three or four of variables, input, output and control, assigned in a manner so as to provide, for example, one of accumulation of inputs and direction control. A four variable Transgear gear assembly may be one of a spur gear Transgear gear assembly having an additional ring gear surrounding a set of planetary gears or a bevel gear Transgear gear assembly having a double bevel gear, an outer bevel gear and a bevel gear meshing to the outer bevel gear sleeve surrounding an inner beveled gear and comprising three orthogonal carrier shafts.
    Type: Grant
    Filed: February 1, 2016
    Date of Patent: November 29, 2016
    Assignee: Differential Dynamics Corporation
    Inventor: Kyung Soo Han
  • Patent number: 9490736
    Abstract: A variable power generator comprises one of a stator and a rotor which is adjustably movable through an infinite number of positions from being proximate to one another so that their magnetic fields overlap to a position such that the rotor is most distant from the stator and has little overlap of magnetic field strength. The variable power generator in operation may comprise one of a rotor and a stator being out of phase with one another by an angle, for example, the one of the rotor or the stator leading or lagging the other. In this instance, a motor such as a servo motor may be used to rotationally compensate for the out-of-phase angle by radially moving the rotor with respect to the stator or vice versa.
    Type: Grant
    Filed: August 18, 2015
    Date of Patent: November 8, 2016
    Assignee: Differential Dynamics Corporation
    Inventor: Kyung Soo Han
  • Patent number: 9476401
    Abstract: A marine hydrokinetic electric power generator comprises one of a stator and a rotor which is adjustably movable through an infinite number of positions from being proximate to one another so that their magnetic fields overlap mostly to a position such that the rotor is most distant from the stator and has little overlap of magnetic field strength. Hatch and speed control may be also provided by a spur/helical gear assembly of sun and planetary gear sets referred to herein as a Transgear™ gear assembly. The variable (or fixed) power generator in operation may comprise one of a rotor and a stator being out of phase with one another by an angle, for example, the one of the rotor or the stator leading or lagging the other and the phase angle, frequency or voltage of output power to a power grid corrected responsive to inputs from the power grid and the marine hydrokinetic turbine.
    Type: Grant
    Filed: August 28, 2015
    Date of Patent: October 25, 2016
    Assignee: Differential Dynamics Corporation
    Inventor: Kyung Soo Han
  • Patent number: 9371775
    Abstract: One-stroke internal combustion engines may comprise reciprocating pistons which are either straight or rotary. Three principles are required to make one-stroke engines work: create four dedicated chambers, assign the chambers with coordinated functions, and make pistons move in unison. The functions will be assigned only to a single stroke but an Otto cycle produces a repeating four stroke cycle. Since four functions are performed simultaneously during one stroke, every stroke becomes a power stroke. In reality, 1-stroke engines are physically rearranged 4-stroke engines. Both straight and rotary 1-stroke engines can be modified to comprise opposed piston opposed cylinder (OPOC) engines. The reciprocating piston output of 1-stroke pistons may be converted to continuously rotating output by using crankshafts with split bushings or newly developed Crankgears with conventional bearings.
    Type: Grant
    Filed: September 22, 2015
    Date of Patent: June 21, 2016
    Assignee: Differential Dynamics Corporation
    Inventor: Kyung Soo Han
  • Patent number: 9303733
    Abstract: Infinitely variable motion control (IVMC) using Transgear gear assemblies provides rotary motion control without any requirement for connecting or disconnecting gear meshes or use of a clutch. A bevel, miter, ring or spur gear Transgear gear assembly may be defined as a gear assembly having three or four of variables, input, output and control, assigned in a manner so as to provide, for example, one of accumulation of inputs and direction control. A four variable Transgear gear assembly may be one of a spur gear Transgear gear assembly having an additional ring gear surrounding a set of planetary gears or a bevel gear Transgear gear assembly having a double bevel gear, an outer bevel gear and a bevel gear meshing to the outer bevel gear sleeve surrounding an inner beveled gear and comprising three orthogonal carrier shafts.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: April 5, 2016
    Assignee: Differential Dynamics Corporation
    Inventor: Kyung Soo Han
  • Patent number: 9169772
    Abstract: One-stroke internal combustion engines may comprise reciprocating pistons which are either straight or rotary. Three principles are required to make one-stroke engines work: create four dedicated chambers, assign the chambers with coordinated functions, and make pistons move in unison. The functions will be assigned only to a single stroke but an Otto cycle produces a repeating four stroke cycle. Since four functions are performed simultaneously during one stroke, every stroke becomes a power stroke. In reality, 1-stroke engines are physically rearranged 4-stroke engines. Both straight and rotary 1-stroke engines can be modified to comprise opposed piston opposed cylinder (OPOC) engines. The reciprocating piston output of 1-stroke pistons may be converted to continuously rotating output by using crankshafts with split bushings or newly developed Crankgears with conventional bearings.
    Type: Grant
    Filed: March 26, 2014
    Date of Patent: October 27, 2015
    Assignee: Differential Dynamics Corporation
    Inventor: Kyung Soo Han
  • Patent number: 9151269
    Abstract: A run-of-the-river or ocean current turbine may comprise a hatch and a slanted block having protector ribs for directing water flow to a waterwheel. The hatch may be controlled by a plurality of Transgear™ gear assemblies for varying the amount of water flow to the waterwheel from extreme drought to flood conditions so that the waterwheel may turn at rated speeds and within a predetermined range. The Transgear gear assemblies may comprise an accumulator for accumulating a rough and a fine tuned waterwheel speed. The Transgear assemblies may comprise embodiments of power take-off switches for, for example, bi-directional or clockwise and counterclockwise waterwheel shaft rotation. The turbine may be aligned for top-feed, side-feed or bottom feed of water and may comprise a tail wing or first and second turbines facing in opposite directions to capture high and low tidal flow.
    Type: Grant
    Filed: April 17, 2014
    Date of Patent: October 6, 2015
    Assignee: Differential Dynamics Corporation
    Inventor: Kyung Soo Han
  • Patent number: 9017208
    Abstract: Infinitely variable motion control (IVMC) provides motion control without any requirement for changing gears or use of a clutch. A bevel or spur gear transgear, defined as a system having an input, an output and a control, a variable pitch cam having an eccentric inner and outer cam assembly, a driver and a one-way clutch or ratchet bearing assembly may be used to form a cam controlled speed converter converting a given input to a variable or constant output speeds and further having direction control. All IVMC's, cam controlled IVMC, input compensated IVMC and pitch controlled IVMC may be utilized to form various embodiments of infinitely variable generators, transmissions and compressors/pumps.
    Type: Grant
    Filed: December 4, 2013
    Date of Patent: April 28, 2015
    Assignee: Differential Dynamics Corporation
    Inventor: Kyung Soo Han
  • Patent number: 8992370
    Abstract: Infinitely variable motion control (IVMC) provides motion control without any requirement for changing gears or use of a clutch. A spur gear transgear, defined as a system having an input, an output and a control, a variable pitch cam having an eccentric inner and outer cam assembly and a driver may be used to form a speed converter. The speed converter is used in various forms to provide an infinitely variable transmission, a differential, embodiments of wind and river turbines and pumps/compressors. In one embodiment, the speed converter drives first and second directional control assemblies to provide a vehicle with zero turn radius. Various embodiments of an infinitely variable pump or compressor are described.
    Type: Grant
    Filed: January 15, 2014
    Date of Patent: March 31, 2015
    Assignee: Differential Dynamics Corporation
    Inventor: Kyung Soo Han
  • Patent number: 8986149
    Abstract: Infinitely variable motion control (IVMC) provides motion control without any requirement for changing gears or use of a clutch. A spur gear transgear, defined as a system having an input, an output and a control, a variable pitch cam having an eccentric inner and outer cam assembly and a driver may be used to form a speed converter. The speed converter is used in various forms to provide an infinitely variable transmission, a differential, embodiments of wind and river turbines and pumps/compressors. In one embodiment, the speed converter drives a direction control assembly (forward, reverse and neutral) and first and second directional control assemblies to provide a vehicle with zero turn radius. A variable torque converter may be used in various embodiments to control torque from a minimum to a maximum by controlling movement of a rotor along a shaft in relation to a stator.
    Type: Grant
    Filed: January 15, 2014
    Date of Patent: March 24, 2015
    Assignee: Differential Dynamics Corporation
    Inventor: Kyung Soo Han
  • Publication number: 20140290616
    Abstract: One-stroke internal combustion engines may comprise reciprocating pistons which are either straight or rotary. Three principles are required to make one-stroke engines work: create four dedicated chambers, assign the chambers with coordinated functions, and make pistons move in unison. The functions will be assigned only to a single stroke but an Otto cycle produces a repeating four stroke cycle. Since four functions are performed simultaneously during one stroke, every stroke becomes a power stroke. In reality, 1-stroke engines are physically rearranged 4-stroke engines. Both straight and rotary 1-stroke engines can be modified to comprise opposed piston opposed cylinder (OPOC) engines. The reciprocating piston output of 1-stroke pistons may be converted to continuously rotating output by using crankshafts with split bushings or newly developed Crankgears with conventional bearings.
    Type: Application
    Filed: March 26, 2014
    Publication date: October 2, 2014
    Applicant: DIFFERENTIAL DYNAMICS CORPORATION
    Inventor: Kyung Soo Han
  • Publication number: 20140241855
    Abstract: A run-of-the-river or ocean current turbine may comprise a hatch and a slanted block having protector ribs for directing water flow to a waterwheel. The hatch may be controlled by a plurality of Transgear™ gear assemblies for varying the amount of water flow to the waterwheel from extreme drought to flood conditions so that the waterwheel may turn at rated speeds and within a predetermined range. The Transgear gear assemblies may comprise an accumulator for accumulating a rough and a fine tuned waterwheel speed. The Transgear assemblies may comprise embodiments of power take-off switches for, for example, bi-directional or clockwise and counterclockwise waterwheel shaft rotation. The turbine may be aligned for top-feed, side-feed or bottom feed of water and may comprise a tail wing or first and second turbines facing in opposite directions to capture high and low tidal flow.
    Type: Application
    Filed: April 17, 2014
    Publication date: August 28, 2014
    Applicant: DIFFERENTIAL DYNAMICS CORPORATION
    Inventor: Kyung Soo Han
  • Publication number: 20140141927
    Abstract: Infinitely variable motion control (IVMC) provides motion control without any requirement for changing gears or use of a clutch. A spur gear transgear, defined as a system having an input, an output and a control, a variable pitch cam having an eccentric inner and outer cam assembly and a driver may be used to form a speed converter. The speed converter is used in various forms to provide an infinitely variable transmission, a differential, embodiments of wind and river turbines and pumps/compressors. In one embodiment, the speed converter drives a direction control assembly (forward, reverse and neutral) and first and second directional control assemblies to provide a vehicle with zero turn radius. A variable torque converter may be used in various embodiments to control torque from a minimum to a maximum by controlling movement of a rotor along a shaft in relation to a stator.
    Type: Application
    Filed: January 15, 2014
    Publication date: May 22, 2014
    Applicant: DIFFERENTIAL DYNAMICS CORPORATION
    Inventor: Kyung Soo Han
  • Publication number: 20140137676
    Abstract: Infinitely variable motion control (IVMC) provides motion control without any requirement for changing gears or use of a clutch. A spur gear transgear, defined as a system having an input, an output and a control, a variable pitch cam having an eccentric inner and outer cam assembly and a driver may be used to form a speed converter. The speed converter is used in various forms to provide an infinitely variable transmission, a differential, embodiments of wind and river turbines and pumps/compressors. In one embodiment, the speed converter drives first and second directional control assemblies to provide a vehicle with zero turn radius. Various embodiments of an infinitely variable pump or compressor are described.
    Type: Application
    Filed: January 15, 2014
    Publication date: May 22, 2014
    Applicant: DIFFERENTIAL DYNAMICS CORPORATION
    Inventor: Kyung Soo Han
  • Patent number: 8702552
    Abstract: Infinitely variable motion control (IVMC) provides motion control without any requirement for changing gears or use of a clutch. A spur gear transgear, defined as a system having an input, an output and a control, a variable pitch cam having an eccentric inner and outer cam assembly and a driver may be used to form a speed converter. The speed converter is used in various forms to provide an infinitely variable transmission, a differential, embodiments of wind and river turbines and pumps/compressors. In one embodiment, the speed converter drives first and second directional control assemblies to provide a vehicle with zero turn radius. A variable torque converter may be used in various embodiments to control torque from a minimum to a maximum by controlling movement of a rotor along a shaft in relation to a stator.
    Type: Grant
    Filed: June 12, 2013
    Date of Patent: April 22, 2014
    Assignee: Differential Dynamics Corporation
    Inventor: Kyung Soo Han
  • Publication number: 20140094338
    Abstract: Infinitely variable motion control (IVMC) provides motion control without any requirement for changing gears or use of a clutch. A bevel or spur gear transgear, defined as a system having an input, an output and a control, a variable pitch can having an eccentric inner and outer cam assembly, a driver and a one-way clutch or ratchet bearing assembly may be used to form a cam controlled speed converter converting a given input to a variable or constant output speeds and further having direction control. All IVMC's, cam controlled IVMC, input compensated IVMC and pitch controlled IVMC may be utilized to form various embodiments of infinitely variable generators, transmissions and compressors/pumps.
    Type: Application
    Filed: December 4, 2013
    Publication date: April 3, 2014
    Applicant: DIFFERENTIAL DYNAMICS CORPORATION
    Inventor: Kyung Soo Han
  • Patent number: 8641570
    Abstract: Infinitely variable motion control (IVMC) provides motion control without any requirement for changing gears or use of a clutch. A spur gear transgear, defined as a system having an input, an output and a control, a variable pitch cam having an eccentric inner and outer cam assembly, a driver and a one-way clutch or ratchet bearing assembly may be used to form a cam controlled speed converter converting a given input to a variable or constant output speeds and further having direction control. All IVMC's, cam controlled IVMC, input compensated IVMC and pitch controlled IVMC may be utilized to form various embodiments of infinitely variable generators, transmissions and compressors/pumps.
    Type: Grant
    Filed: March 21, 2012
    Date of Patent: February 4, 2014
    Assignee: Differential Dynamics Corporation
    Inventor: Kyung Soo Han
  • Publication number: 20130274056
    Abstract: Infinitely variable motion control (IVMC) provides motion control without any requirement for changing gears or use of a clutch. A spur gear transgear, defined as a system having an input, an output and a control, a variable pitch cam having an eccentric inner and outer cam assembly and a driver may be used to form a speed converter. The speed converter is used in various forms to provide an infinitely variable transmission, a differential, embodiments of wind and river turbines and pumps/compressors. In one embodiment, the speed converter drives first and second directional control assemblies to provide a vehicle with zero turn radius. A variable torque converter may be used in various embodiments to control torque from a minimum to a maximum by controlling movement of a rotor along a shaft in relation to a stator.
    Type: Application
    Filed: June 12, 2013
    Publication date: October 17, 2013
    Applicant: DIFFERENTIAL DYNAMICS CORPORATION
    Inventor: Kyung Soo Han