Patents by Inventor Alfred Rallo

Alfred Rallo 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).

  • Patent number: 9938615
    Abstract: A method for the low-pressure carbonitriding of steel parts, in particular parts used in the manufacture of automobiles comprises a heating step that includes a simple heating phase (M) followed by an initial nitridation phase (Ni) from a temperature between 700° C. to 750° C. to a temperature between 860° and 1000° C. carried out using a reduced temperature gradient relative to the simple heating phase. The method further includes alternate cementing (C1-Cn) and nitridation (N1-Nn) steps at constant temperature, wherein the final nitridation step is accompanied with a decrease in temperature immediately before quenching (T).
    Type: Grant
    Filed: October 8, 2012
    Date of Patent: April 10, 2018
    Assignee: ECM TECHNOLOGIES
    Inventors: Philippe Lapierre, Jerome Lardinois, Yves Giraud, Alfred Rallo
  • Patent number: 9765422
    Abstract: A method for the low-pressure carbonitriding of steel parts, in particular parts used in the manufacture of automobiles comprises a heating step that includes a simple heating phase (M) followed by an initial nitridation phase (Ni) from a temperature between 700° C. to 750° C. to a temperature between 860° C. and 1000° C. and carried out using a reduced temperature gradient relative to the simple heating phase. Additionally, alternate cementing (C1-Cn) and nitridation (N1-Nn) steps are performed at constant temperature, wherein the final nitridation step is accompanied with a decrease in temperature immediately before quenching (T).
    Type: Grant
    Filed: October 8, 2012
    Date of Patent: September 19, 2017
    Assignee: ECM Technologies
    Inventors: Philippe Lapierre, Jerome Lardinois, Yves Giraud, Alfred Rallo
  • Publication number: 20170241008
    Abstract: A method for the low-pressure carbonitriding of steel parts, in particular parts used in the manufacture of automobiles comprises a heating step that includes a simple heating phase (M) followed by an initial nitridation phase (Ni) from a temperature between 700° C. to 750° C. to a temperature between 860° and 1000° C. and carried out using a reduced temperature gradient relative to the simple heating phase. Additionally, alternate cementing (C1-Cn) and nitridation (N1-Nn) steps are performed at constant temperature, wherein the final nitridation step is accompanied with a decrease in temperature immediately before quenching (T).
    Type: Application
    Filed: October 8, 2012
    Publication date: August 24, 2017
    Applicant: ECM Technologies
    Inventors: Philippe Lapierre, Jerome Lardinois, Yves Giraud, Alfred Rallo
  • Patent number: 9708704
    Abstract: A method for the low-pressure carbonitriding of steel parts, in particular parts used in the manufacture of automobiles, comprises a heating step that includes a simple heating phase (M) followed by an initial nitridation phase (Ni) from a temperature between 700° C. to 750° C. to a temperature between 860° and 1000° C. and carried out using a reduced temperature gradient relative to the simple heating phase. Additionally, alternate cementing (C1-Cn) and nitridation (N1-Nn) steps are performed at constant temperature, wherein the final nitridation step is accompanied with a decrease in temperature immediately before quenching (T).
    Type: Grant
    Filed: October 8, 2012
    Date of Patent: July 18, 2017
    Assignee: ECM Technologies
    Inventors: Philippe Lapierre, Jerome Lardinois, Yves Giraud, Alfred Rallo
  • Publication number: 20150101710
    Abstract: A method for the low-pressure carbonitriding of steel parts, in particular parts used in the manufacture of automobiles, comprises a heating step that includes a simple heating phase (M) followed by an initial nitridation phase (Ni) from a temperature between 700° C. to 750° C. to a temperature between 860° and 1000° C. and carried out using a reduced temperature gradient relative to the simple heating phase. Additionally, alternate cementing (C1-Cn) and nitridation (N1-Nn) steps are performed at constant temperature, wherein the final nitridation step is accompanied with a decrease in temperature immediately before quenching (T).
    Type: Application
    Filed: October 8, 2012
    Publication date: April 16, 2015
    Applicant: EMC Technologies
    Inventors: Philippe Lapierre, Jerome Lardinois, Yves Giraud, Alfred Rallo
  • Publication number: 20140290800
    Abstract: A method for the low-pressure carbonitriding of steel parts, in particular parts used in the manufacture of automobiles comprises a heating step that includes a simple heating phase (M) followed by an initial nitridation phase (Ni) from a temperature between 700° C. to 750° C. to a temperature between 860° and 1000° C. carried out using a reduced temperature gradient relative to the simple heating phase. The method further includes alternate cementing (C1-Cn) and nitridation (N1-Nn) steps at constant temperature, wherein the final nitridation step is accompanied with a decrease in temperature immediately before quenching (T).
    Type: Application
    Filed: October 8, 2012
    Publication date: October 2, 2014
    Inventors: Philippe Lapierre, Jerome Lardinois, Yves Giraud, Alfred Rallo
  • Publication number: 20140238549
    Abstract: A method for the low-pressure carbonitriding of steel parts, in particular parts used in the manufacture of automobiles comprises a heating step that includes a simple heating phase (M) followed by an initial nitridation phase (Ni) from a temperature between 700° C. to 750° C. to a temperature between 860° and 1000° C. and carried out using a reduced temperature gradient relative to the simple heating phase. Additionally, alternate cementing (C1-Cn) and nitridation (N1-Nn) steps are performed at constant temperature, wherein the final nitridation step is accompanied with a decrease in temperature immediately before quenching (T).
    Type: Application
    Filed: October 8, 2012
    Publication date: August 28, 2014
    Applicant: ECM Technologies
    Inventors: Philippe Lapierre, Jerome Lardinois, Yves Giraud, Alfred Rallo