Headquartered in suburban Baltimore, Maryland, USA, DDMotion has invented the world’s first mechanical, infinitely-variable motion controls. Our revolutionary technology’s core element is the patented three-variable Transgear™ gear assembly. The Transgear assembly provides the optimal gear ratio for all operating conditions, resulting in a cost efficient, environmentally friendly method of controlling machinery. The company holds an array of patents on its innovative variable motion controls.

DDMotion offers a breakthrough paradigm in the development of turbines used to produce electricity. Companies who use existing technologies are only able to incrementally improve on their efficiency and performance. Focusing on a new logic for motion control rather than enhancements to existing products, DDMotion offers its partners a competitive advantage that can help them increase energy production and position themselves as leaders in the industry.

 

DDMotion Patents

Title: Issue Date: Patent Number:
Variable Speed Gearing Assembly May 01, 1991 5,016,493
Variable Speed Transmission May 26, 1992 5,116,292
Constant/Variable Speed Gear Assembly Dec. 08, 1992 5,169,359
Variable Speed Drive Transmission May 03, 1994 5,308,293
Variable Speed Transmission System & Differential (IVT) May 30, 2000 6,068,570
Variable Speed Transmission System & Rotary Motion Control (IVT) Mar. 25, 2004 6,537,168
Variable Motion Control Device & Method of Use (Transgears™) Dec. 09, 2008 7,462,124 B2
Variable Motion Control Devices for Transmission & Other Implementations and Methods of Use Thereof (IVT) June 08, 2010 7,731,616 B2
Variable Motion Control Devices & Method of Use (Transgears™) June 08, 2010 7,731,619 B2
System and Method for Providing a Constant Output from a Variable Flow Input (Wind) Mar. 05, 2013 8,388,481 B2
Infinitely Variable Motion Control (IVMC) for River Turbines Jul. 16, 2013 8,485,933 B2
IVMC for Generators, Transmissions & Pumps/Compressors Feb. 4, 2014 8,641,570 B2
One-Stroke Internal Combustion Engine Pending 14225658
Run-of-the-River or Ocean Current Turbine Pending 14255377

 

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Key Han

Inspired by his belief that people and machines can solve complex problems and open new frontiers, Key Han, the founder and chief technology officer of DDMotion, spent ten years perfecting his designs and prototypes for mechanically driven, infinitely-variable motion controls. The core element of Mr. Han’s designs is a patented gear assembly that has three variables. The name Transgear™ gear assembly derives from its similarity to the way transistors function in electronics. And like transistors, it has unlimited applications across all industries.