Patents by Inventor Albert J. Hanssen

Albert J. Hanssen 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).

  • Reciprocating valve having stem cleaning means
    Patent number: 4061157
    Abstract: A reciprocating valve is formed with a valve stem extending through a packing box which includes an outwardly facing conical surface disposed about the valve stem. The conical surface terminates in a knife-like edge which functions to remove accumulations of foreign material from exposed portions of the valve stem. As the stem moves into the packing box, a non-metallic liner is disposed between the packing box and the valve stem for positioning the knife-like edge in close proximity to and concentric with the valve stem.
    Type: Grant
    Filed: January 27, 1976
    Date of Patent: December 6, 1977
    Assignee: International Telephone and Telegraph Corporation
    Inventor: Albert J. Hanssen
  • Control valve
    Patent number: 4037818
    Abstract: A rotatable plug of a control valve is supported by trunions journaled along an axis transverse to the direction of flow of a fluid to be controlled and is provided with a flow passage defined in part by a surface having at least one baffle formed thereon for providing desired flow characteristics over the entire range of plug travel.
    Type: Grant
    Filed: August 26, 1975
    Date of Patent: July 26, 1977
    Assignee: International Telephone and Telegraph Corporation
    Inventors: Roy E. Soderberg, Albert J. Hanssen