Patents by Inventor Thomas R. Hagner

Thomas R. Hagner 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: 6907836
    Abstract: The present invention relates to a rebuilt double hull tanker and a method of rebuilding an existing single hull tanker into a rebuilt double hull tanker. The rebuilt double hull tanker includes an internally rebuilt double bottom hull comprising the existing outer bottom hull and a new inner bottom hull that is disposed internal and spaced apart from the existing outer bottom hull and externally rebuilt double side hulls (e.g., port and starboard) comprising the existing inner side hulls and new outer side hulls disposed external and spaced apart from the existing inner side hull. The method includes forming the new double hull, including a new double bottom hull and new double side hulls, over at least the cargo carrying portion of the tanker by installing at least a portion of the new inner bottom hull internally over the existing outer bottom hull through cut-outs in the topside decking.
    Type: Grant
    Filed: March 23, 2004
    Date of Patent: June 21, 2005
    Assignee: Maritrans, Inc.
    Inventor: Thomas R. Hagner
  • Publication number: 20040237865
    Abstract: The present invention relates to a rebuilt double hull tanker and a method of rebuilding an existing single hull tanker into a rebuilt double hull tanker. The rebuilt double hull tanker includes an internally rebuilt double bottom hull comprising the existing outer bottom hull and a new inner bottom hull that is disposed internal and spaced apart from the existing outer bottom hull and externally rebuilt double side hulls (e.g., port and starboard) comprising the existing inner side hulls and new outer side hulls disposed external and spaced apart from the existing inner side hull. The method includes forming the new double hull, including a new double bottom hull and new double side hulls, over at least the cargo carrying portion of the tanker by installing at least a portion of the new inner bottom hull internally over the existing outer bottom hull through cut-outs in the topside decking.
    Type: Application
    Filed: March 23, 2004
    Publication date: December 2, 2004
    Applicant: Maritrans, Inc.
    Inventor: Thomas R. Hagner
  • Patent number: 6708636
    Abstract: The present invention relates to a rebuilt double hull tanker and a method of rebuilding an existing single hull tanker into a rebuilt double hull tanker. The rebuilt double hull tanker includes a rebuilt double hull comprising a new double bottom hull and new double side hulls. The internally rebuilt double bottom hull includes the existing outer bottom hull and a new inner bottom hull that is disposed internal and spaced apart from the existing outer bottom hull. The externally rebuilt double side hulls (e.g., port and starboard) include the existing inner side hulls and new outer side hulls disposed external and spaced apart from the existing inner side hull. The rebuilt double bottom hull is connected at each end (e.g., at the turn of the bilge) to the rebuilt double side hulls.
    Type: Grant
    Filed: February 21, 2003
    Date of Patent: March 23, 2004
    Assignee: Maritrans Inc.
    Inventor: Thomas R. Hagner