Patents by Inventor H. Milton Hoff, Jr.

H. Milton Hoff, Jr. 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: 5873157
    Abstract: A rod guide is provided for centering a sucker rod within a tubular string that powers the pump within a well bore. The rod guide comprises a spool securable to the rod and having tipper and lower end members thereon, and a plastic material sleeve extending between the upper and lower end members. The sleeve may be mounted to the rod during a molding operation. The rod guide further includes a guide body which may be machined from an ultra-high molecular weight polyethylene material which has desired abrasive and wear characteristics. In one embodiment, the body is rotatable about the spool. A slot within the guide body and scalloped-shaped cut-outs at both ends of the guide body provide fluid communication between an annulus formed between the O.D. of the sleeve portion of the spool and the I.D. of the guide body.
    Type: Grant
    Filed: May 23, 1997
    Date of Patent: February 23, 1999
    Assignee: Flow Control Equipment Co.
    Inventors: Charles M. Hart, H. Milton Hoff, Jr., John L. Tillman, Jr., Lindell R. Trout, Stephen L. Witte, Sr.
  • Patent number: 5339896
    Abstract: A rod guide is provided for centering a sucker rod within a tubular string that powers the pump within a well bore. The rod guide comprises a spool securable to the rod and having upper and lower end members thereon, and a plastic material sleeve extending between the upper and lower end members. The sleeve may be mounted to the rod during a molding operation. The rod guide further includes a guide body which may be machined from an ultra-high molecular weight polyethylene material which has desired abrasive and wear characteristics. In one embodiment, the body is rotatable about the spool. A slot within the guide body and scalloped-shaped cut-outs at both ends of the guide body provide fluid communication between an annulus formed between the O.D. of the sleeve portion of the spool and the I.D. of the guide body.
    Type: Grant
    Filed: May 6, 1993
    Date of Patent: August 23, 1994
    Assignee: J. M. Huber Corp.
    Inventors: Charles M. Hart, H. Milton Hoff, Jr., John L. Tillman, Jr., Lindell R. Trout, Stephen L. Witte, Sr.