Patents by Inventor Sinnathamby Thiruvarudchelvan

Sinnathamby Thiruvarudchelvan 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).

  • Patent number: 4300378
    Abstract: A method and apparatus for forming elongated articles whereby a torque is transmitted to the deforming material as it passes through a die cavity to facilitate the reduction in the cross-section thereof as it passes therethrough. In one embodiment, the apparatus includes a rotatable die member having a longitudinally extending die cavity, the end region thereof having a reduced diameter circular cross-section. A cavity region upstream of the downstream end region has a non-circular cross-section. Means are provided for positively rotating the die member about its longitudinal axis.
    Type: Grant
    Filed: March 8, 1979
    Date of Patent: November 17, 1981
    Inventor: Sinnathamby Thiruvarudchelvan