This inventor holds 4 USPTO granted patents. Top assignee: Other. Active years: 2002-2005.
Company Filing History:
4 out of 834,453 Years Active: 2002-2005
Title: Joseph K Kelly: Innovator in Direct Metal Deposition Technology
Introduction
Joseph K Kelly is a notable inventor based in Plymouth, MI (US). He has made significant contributions to the field of manufacturing, particularly in the area of direct metal deposition. With a total of 4 patents to his name, Kelly's work focuses on enhancing the efficiency and effectiveness of three-dimensional component manufacturing.
Latest Patents
One of Kelly's latest patents is titled "Closed-loop, rapid manufacturing of three-dimensional components using direct metal deposition." This innovative approach involves monitoring and controlling multiple criteria to improve the success of direct-metal deposition. Key factors such as deposit layer height, sub-harmonic vibration, contour path shape, powder mass flow, and deposition speed are meticulously controlled. Sensors play a crucial role in monitoring parameters like deposit height, width, temperature, and residual stress. A predetermined limit regarding the yield strength of the material is established, and if stress exceeds this limit, sensors automatically implement remedial measures based on prior experimental knowledge. Additionally, an infrared temperature detector may be utilized to manage temperature-induced distortion and stress.
Another significant patent by Kelly is "Duty cycle stabilization in direct metal deposition (DMD) systems." This patent focuses on monitoring the laser duty cycle in DMD systems to control powder flowrate, ensuring the duty cycle remains within a desired range of 75 to 95%. The system samples the output signal of the feedback device at a high rate, storing data in a memory buffer. An algorithm calculates the duty cycle over a specified period, and the current duty cycle is displayed on the operator's computer screen along with periodic measurements.
Career Highlights
Throughout his career, Joseph K Kelly has demonstrated a commitment to advancing manufacturing technologies. His innovative patents reflect his expertise and dedication to improving direct metal deposition processes.
Collaborations
Kelly has collaborated with notable colleagues such as Jyoti Mazumder and Timothy Walter Skszek. Their combined efforts contribute to the ongoing development and refinement of manufacturing technologies.
Conclusion
Joseph K Kelly is a distinguished inventor whose work in direct metal deposition technology has significantly impacted the manufacturing industry. His innovative patents and collaborations highlight his commitment to advancing this field.