Patents by Inventor Erwin E. Hoffman

Erwin E. Hoffman 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).

  • Grouting system and arrangement for offshore structure
    Patent number: 4063421
    Abstract: An inflatable seal is first effected adjacent the lower end of the annular space between a piling and a jacket of a supporting leg of an offshore structure and thereafter grouting material is inserted into the annular space between the jacket and the piling. After the seal has been effected, means trap inflating fluid in the seal adjacent the lower end of the annular space while grouting material is discharged into the space.
    Type: Grant
    Filed: August 4, 1975
    Date of Patent: December 20, 1977
    Assignee: Lynes, Inc.
    Inventors: Malcolm G. Coone, Erwin E. Hoffman
  • Seal arrangement and flow control means therefor
    Patent number: 4063427
    Abstract: An inflatable reinforced sealing element for positioning on a jacket to seal off the space between the jacket and a piling in the jacket, with the jacket and piling being associated with the supporting leg of an offshore structure. Control means are provided for controlling the flow of fluid for inflation of the seal means to sealingly engage the piling and seal off the space, to trap the inflating fluid in the seal means and for controlling the flow of grouting material to the space between the jacket after the seal has been effected.
    Type: Grant
    Filed: August 4, 1975
    Date of Patent: December 20, 1977
    Assignee: Lynes, Inc.
    Inventor: Erwin E. Hoffman