Patents by Inventor Harvey G. Van Fossen

Harvey G. Van Fossen 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).

  • Portable blasting device and sealing means
    Patent number: 4319436
    Abstract: A portable blasting device in which the space between the blast head and the surface being treated is provided with a magnetic seal formed of the particulate material with apparatus for maintaining the magnet supports for relative movement to maintain the sealed spaced relation notwithstanding unevenness of the surface.
    Type: Grant
    Filed: February 4, 1980
    Date of Patent: March 16, 1982
    Assignee: Wheelabrator-Frye, Inc.
    Inventor: Harvey G. Van Fossen
  • Abrasive particle blast apparatus for surface treatment
    Patent number: 4275531
    Abstract: Recovery and feed system for abrasive blast in surface treatment comprising treatment and return by air to separate spent abrasive particles from dust and dirt and collecting the separated abrasive particles in a chamber, automatically withdrawing fresh abrasive particles from a storage bin when the recycle falls below a predetermined level in the chamber.
    Type: Grant
    Filed: November 19, 1979
    Date of Patent: June 30, 1981
    Assignee: Wheelabrator-Frye, Inc.
    Inventor: Harvey G. Van Fossen
  • Abrasive particle blast apparatus for surface treatment
    Patent number: 4202142
    Abstract: Recovery and feed system for abrasive blast in surface treatment comprising treatment and return by air to separate spent abrasive particles from dust and dirt and collecting the separated abrasive particles in a chamber, automatically withdrawing fresh abrasive particles from a storage bin when the recycle falls below a predetermined level in the chamber.
    Type: Grant
    Filed: July 17, 1978
    Date of Patent: May 13, 1980
    Assignee: Wheelabrator-Frye Inc.
    Inventor: Harvey G. Van Fossen
  • Blast head rigging apparatus for tank side cleaning
    Patent number: 4199905
    Abstract: A portable blast head rigging apparatus is disclosed which is particularly suited for use in cleaning the sides of large storage tanks. The rigging employs a travel car having a winch mechanism thereon. By means of a cable connected to the top of the tank the car crawls up the side of the tank to the top where it is pivoted into a position from which it can travel around the entire circumference of the tank. Once in place the travel car hoists a rigging into position against the tank side suspended from the travel car. The blast head is then moved up and down within the rigging by operation of the travel car winch mechanism and the travel car is repositioned periodically to permit treatment of the entire tank.
    Type: Grant
    Filed: September 11, 1978
    Date of Patent: April 29, 1980
    Assignee: Wheelabrator-Frye Inc.
    Inventors: Robert J. Neidigh, Harvey G. Van Fossen