Patents by Inventor Carl Herbert Petersen

Carl Herbert Petersen 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).

  • Foundry apparatus for the separation of castings from casting moulds
    Patent number: 4082135
    Abstract: For the purpose of separating castings from the sand or similar material forming a string of moulds, each of the castings proper together with a lump of heat damaged mould material totally surrounding the casting is separated from the mould string. After having been subjected to an appropriate degree of cooling, the castings are separated from the lump material which, after sufficient regeneration, may be re-used together with the non-damaged material of the moulds.
    Type: Grant
    Filed: January 30, 1976
    Date of Patent: April 4, 1978
    Assignee: Dansk Industri Syndikat A/S
    Inventors: Carl Herbert Petersen, Marius Gunnergaard
  • Method for the separation of castings from casting moulds or similar material and a foundry machine for carrying out this method
    Patent number: 3958619
    Abstract: For the purpose of separating castings from the sand or similar material forming a string of moulds, each of the castings proper together with a lump of heat damaged mould material totally surrounding the castings is separated from the mould string. After having been subjected to an appropriate degree of cooling, the castings are separated from the lump material which, after sufficient regeneration, may be re-used together with the non-damaged material of the moulds.
    Type: Grant
    Filed: January 31, 1974
    Date of Patent: May 25, 1976
    Assignee: Dansk Industri Syndikat A/S
    Inventors: Carl Herbert Petersen, Marius Gunnergaard