Patents by Inventor Herbert Vissers, deceased

Herbert Vissers, deceased 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).

  • Apparatus for cooling castings and for cooling and drying moulding sand
    Patent number: RE29709
    Abstract: An apparatus for cooling castings and cooling and drying moulding sand, comprising a horizontal drum rotatable about its longitudinal axis and having an inlet opening for castings and casting moulds at one end and an outlet opening for castings at the other end. The drum wall first has an impermeable part which is followed by a perforate part for the discharge of moulding sand. An underlying descriptive line of the drum viewed in the direction from the inlet end to the outlet end slopes upwardly at least for a part and this gives rise to several embodiments.
    Type: Grant
    Filed: August 16, 1976
    Date of Patent: July 25, 1978
    Assignee: Expert, N.V.
    Inventor: Herbert Vissers, deceased