Patents by Inventor Stanley Drozdowski

Stanley Drozdowski 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).

  • Soft skin metal seal and technique of manufacture
    Patent number: 9062511
    Abstract: A seal assembly between a wellhead housing and a casing hanger, has an inner seal leg for sealing against hanger, and an outer seal leg for sealing against housing. An extension extends downward from the outer seal leg and is connected to a nose ring. The nose ring has a downward facing shoulder that rests on the hanger shoulder to provide a reaction point for setting operations. A sealing surface on the seal legs is heat treated to obtain a lower localized yield strength to provide improved sealing while maintaining mechanical load capability.
    Type: Grant
    Filed: October 18, 2011
    Date of Patent: June 23, 2015
    Assignee: Vetco Gray Inc.
    Inventors: Nicholas P. Gette, Stanley Drozdowski
  • Soft Skin Metal Seal and Technique of Manufacture
    Publication number: 20130093140
    Abstract: A seal assembly between a wellhead housing having a bore and a casing hanger, has an inner seal leg for sealing against hanger and an outer seal leg for sealing against housing. An extension extends downward from outer seal leg and is connected to a nose ring having a downward facing shoulder that rests on the hanger shoulder to provide a reaction point for setting operations. A sealing surface on the seal legs is heat treated to obtain a lower localized yield strength to provide improved sealing while maintaining mechanical load capability.
    Type: Application
    Filed: October 18, 2011
    Publication date: April 18, 2013
    Applicant: Vetco Gray Inc.
    Inventors: Nicholas P. Gette, Stanley Drozdowski