Patents by Inventor Jeewan Puri

Jeewan Puri 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).

  • Dished disk windings for cast winding applications
    Publication number: 20020170163
    Abstract: The present invention is a dry type transformer having a plurality of winding disks wound in a first direction alternating with a plurality of winding disks wound in a reverse direction. The winding disks are connected by alternating Start to Start, and Finish to Finish connections. One set of the winding disks are dished to shorten the distance for the connections.
    Type: Application
    Filed: March 4, 2002
    Publication date: November 21, 2002
    Inventor: Jeewan Puri
  • Strip wound coil with reinforced edge layer insulation
    Patent number: 5596305
    Abstract: A dry type transformer has an iron core, high voltage windings embedded in cast resin, and low voltage windings resin encapsulated. The low voltage winding is constructed with flexible sheet conductors coincident with layer insulation sheets that extend beyond the edge of the sheet conductor. Cooling air ducts are fabricated in the low voltage windings as it is wound. To prevent the extension of the layer insulation sheets from collapsing over the formed air ducts during a vacuum and pressure resin impregnation process, reinforcing means are added to the extensions to prevent them from collapsing.
    Type: Grant
    Filed: October 26, 1994
    Date of Patent: January 21, 1997
    Inventor: Jeewan Puri
  • Method of manufacturing a strip wound coil to reinforce edge layer insulation
    Patent number: 5461772
    Abstract: A dry type transformer has an iron core, high voltage windings embedded in cast resin, and low voltage windings resin encapsulated. The low voltage winding is constructed with flexible sheet conductors coincident with layer insulation sheets that extend beyond the edge of the sheet conductor. Cooling air ducts are fabricated in the low voltage windings as it is wound. To prevent the extension of the layer insulation sheets from collapsing over the formed air ducts during a vacuum and pressure resin impregnation process, reinforcing means are added to the extensions to prevent them from collapsing.
    Type: Grant
    Filed: March 17, 1993
    Date of Patent: October 31, 1995
    Assignee: Square D Company
    Inventor: Jeewan Puri
  • Dry-type transformer and method of manufacturing
    Patent number: 5396210
    Abstract: A dry type transformer has an iron core, high voltage windings embedded in cast resin, and low voltage windings resin encapsulated. The low voltage winding is constructed with flexible sheet conductors. Insulating material includes an apparatus to secure the windings in place during a vacuum and pressure resin impregnation process. The result is a coil that exhibits high short circuit protection due to the tightly bond conductors comparable to completely resin encased molded transformers at a substantially reduced cost.
    Type: Grant
    Filed: March 17, 1993
    Date of Patent: March 7, 1995
    Assignee: Square D Company
    Inventors: Dilip R. Purohit, Timothy A. Soter, Jeewan Puri