Patents by Inventor David C. Wands

David C. Wands 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).

  • High pressure sealing arrangement
    Patent number: 10151311
    Abstract: A seal assembly seals a gap between a pump plunger and a high pressure cylinder of a pump. The assembly includes a seal ring having a bore through which the plunger can extend, a front axial end, and a rear axial end. An O-ring is positioned on the seal ring. A packing ring has a bore through which the plunger can extend, a front axial end abutting the rear axial end of the seal ring, and a rear axial end. A non-metal packing follower has a bore through which the plunger can extend, a front axial end abutting the rear axial end of the packing ring, and a rear axial end. The non-metal packing follower can be ceramic (e.g., carbide) or similar hard, wear-resistant materials.
    Type: Grant
    Filed: September 27, 2016
    Date of Patent: December 11, 2018
    Inventors: Shajan V. Chacko, David C. Wands
  • HIGH PRESSURE SEALING ARRANGEMENT
    Publication number: 20170016441
    Abstract: A seal assembly seals a gap between a pump plunger and a high pressure cylinder of a pump. The assembly includes a seal ring having a bore through which the plunger can extend, a front axial end, and a rear axial end. An O-ring is positioned on the seal ring. A packing ring has a bore through which the plunger can extend, a front axial end abutting the rear axial end of the seal ring, and a rear axial end. A non-metal packing follower has a bore through which the plunger can extend, a front axial end abutting the rear axial end of the packing ring, and a rear axial end. The non-metal packing follower can be ceramic (e.g., carbide) or similar hard, wear-resistant materials.
    Type: Application
    Filed: September 27, 2016
    Publication date: January 19, 2017
    Inventors: Shajan V. Chacko, David C. Wands
  • High pressure sealing arrangement
    Patent number: 9482211
    Abstract: A seal assembly seals a gap between a pump plunger and a high pressure cylinder of a pump. The assembly includes a seal ring having a bore through which the plunger can extend, a front axial end, and a rear axial end. An O-ring is positioned on the seal ring. A packing ring has a bore through which the plunger can extend, a front axial end abutting the rear axial end of the seal ring, and a rear axial end. A non-metal packing follower has a bore through which the plunger can extend, a front axial end abutting the rear axial end of the packing ring, and a rear axial end. The non-metal packing follower can be ceramic (e.g., carbide) or similar hard, wear-resistant materials.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: November 1, 2016
    Assignee: KMT Waterjet Systems Inc.
    Inventors: Shajan V. Chacko, David C. Wands
  • HIGH PRESSURE SEALING ARRANGEMENT
    Publication number: 20140015202
    Abstract: A seal assembly seals a gap between a pump plunger and a high pressure cylinder of a pump. The assembly includes a seal ring having a bore through which the plunger can extend, a front axial end, and a rear axial end. An O-ring is positioned on the seal ring. A packing ring has a bore through which the plunger can extend, a front axial end abutting the rear axial end of the seal ring, and a rear axial end. A non-metal packing follower has a bore through which the plunger can extend, a front axial end abutting the rear axial end of the packing ring, and a rear axial end. The non-metal packing follower can be ceramic (e.g., carbide) or similar hard, wear-resistant materials.
    Type: Application
    Filed: July 13, 2012
    Publication date: January 16, 2014
    Inventors: Shajan V. Chacko, David C. Wands
  • Waterjet orifice assembly
    Patent number: 5848753
    Abstract: A waterjet orifice assembly is provided with a retaining hat which assembles over a head portion of a nozzle mount to capture a nozzle jewel between the mount and retaining hat so that when assembled in a nozzle assembly between a nozzle tube and a capture nut the nozzle jewel becomes securely held and centrally aligned within the assembly.
    Type: Grant
    Filed: January 27, 1997
    Date of Patent: December 15, 1998
    Assignee: Ingersoll-Rand Company
    Inventors: David C. Wands, John L. Scott
  • High pressure cylinder assembly for pumps
    Patent number: D531643
    Type: Grant
    Filed: April 29, 2005
    Date of Patent: November 7, 2006
    Assignee: KMT Waterjet Systems, Inc.
    Inventors: Dieter A. Tischler, David C. Wands