Patents by Inventor Shanmuaham Sivakumar

Shanmuaham Sivakumar 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).

  • Injection molding machine with an electromotive spindle drive and a spring-based energy storage device for supporting the electric motor
    Patent number: 7086851
    Abstract: An injection molding machine includes an actuating drive in form of an electromotive spindle drive and an energy storage device associated with the spindle drive. The energy storage device stores kinetic energy and can include two counteracting compression spring assemblies. The energy storage device is hereby loaded, as the spindle drive moves to a first end position, and unloaded, as the spindle drive moves in opposite direction to a second end position, wherein unloading of the energy storage device is accompanied by a power boost of the electric motor, and wherein the first force is equal to the second force at an equilibrium location distal from the end positions of the spindle drive.
    Type: Grant
    Filed: October 20, 2003
    Date of Patent: August 8, 2006
    Assignees: Demag Ergotech GmbH & L & T-Demag Plastics Machinery, Private Limited
    Inventors: Georg Michael Ickinger, Kittappa Gowda Harish, Mangalasseril Saju, Shanmuaham Sivakumar, Mathrubootmam Kumar, Anand Sukumaran Vivek
  • Injection molding machine with an electromotive spindle drive and a spring-based energy storage device for supporting the electric motor
    Publication number: 20040105910
    Abstract: An injection molding machine includes an actuating drive in form of an electromotive spindle drive and an energy storage device associated with the spindle drive. The energy storage device stores kinetic energy and can include two counteracting compression spring assemblies. The energy storage device is hereby loaded, as the spindle drive moves to a first end position, and unloaded, as the spindle drive moves in opposite direction to a second end position, wherein unloading of the energy storage device is accompanied by a power boost of the electric motor, and wherein the first force is equal to the second force at an equilibrium location distal from the end positions of the spindle drive.
    Type: Application
    Filed: October 20, 2003
    Publication date: June 3, 2004
    Applicants: DEMAG ERGOTECH GMBH, L & T-DEMAG PLASTICS MACHINERY PRIVATE LIMITED
    Inventors: Georg Michael Ickinger, Kittappa Gowda Harish, Mangalasseril Saju, Shanmuaham Sivakumar, Mathrubootmam Kumar, Anand Sukumaran Vivek