Patents by Inventor Roland Lenoir

Roland Lenoir 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).

  • Moulds for metal casting and sleeves containing filters for use therein
    Patent number: 4961460
    Abstract: A mould (61) for metal casting has a mould cavity (62) and a sprue (63) communicating directly with the mould cavity (62) and located in the sprue (63) a sleeve (64) of refractory material having a cellular ceramic filter (65) fixed therein. The mould, which has no running system apart from the sprue, may be a sand mould or a metal die for producing castings by gravity or low pressure diecasting. The cellular ceramic filter may be a honeycomb type of structure having cells which extend between two outer surfaces of the filter or a structure having interconnecting cells such as a ceramic foam.
    Type: Grant
    Filed: March 1, 1990
    Date of Patent: October 9, 1990
    Assignee: Foseco International Limited
    Inventors: David R. Butler, George Snow, Philip Sandford, Max G. Neu, Jean P. Villani, Alain Teyssedre, Roland Lenoir
  • Moulds for metal casting and sleeves containing filters for use therein
    Patent number: 4928746
    Abstract: A mould (61) for metal casting has a mould cavity (62) and a sprue (63) communicating directly with the mould cavity (62) and located in the sprue (63) a sleeve (64) of refractory material having a cellular ceramic filter (65) fixed therein. The mould, which has no running system apart from the sprue, may be a sand mould or a metal die for producing castings by gravity or low pressure diecasting. The cellular ceramic filter may be a honeycomb type of structure having cells which extend between two outer surfaces of the filter or a structure having interconnecting cells such as a ceramic foam.
    Type: Grant
    Filed: January 18, 1989
    Date of Patent: May 29, 1990
    Assignee: Foseco International Limited
    Inventors: David R. Butler, George Snow, Philip Sandford, Max G. Neu, Jean P. Villani, Alain Teyssedre, Roland Lenoir