Patents by Inventor Robert Maassen
Robert Maassen 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).
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Patent number: 11577310Abstract: A sintering press includes at least one upper punch and a lower punch, a powder reservoir for filling a female die of the sintering press with at least one powder material that can be sintered, and a female die for producing a green body using the powder material from the powder reservoir. A first punch of the upper punches and/or lower punches has a punch top which is off-center and asymmetric with respect to an axial axis of the sintering press and which can be moved in the female die. The first punch is asymmetric in shape between the punch top and the base, which shape at least reduces an axial tilting of the punch and a lateral drag of the punch top on an adjacent outer surface in the female die during insertion and extraction therefrom during a pressing step in the production of the green body.Type: GrantFiled: September 16, 2016Date of Patent: February 14, 2023Assignee: GKN Sinter Metals Engineering GmbHInventors: Rainer Schmitt, Robert Maassen, Eberhard Ernst, Hasim Tekines
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Patent number: 11577311Abstract: The present invention relates to a punching tool of a sintering press, comprising at least one lower punch and an upper punch, a first punch of the upper punch and/or lower punch having a top piece that is asymmetric with respect to an axial axis of the punch press. The first punch has a geometry which widens from the top piece towards a base and is also asymmetric with respect to the axial axis of the punch press. The invention further relates to a method for pressing at least one powdery material to a green body in a sintering press.Type: GrantFiled: September 16, 2016Date of Patent: February 14, 2023Assignee: GKN Sinter Metals Engineering GmbHInventors: Rainer Schmitt, Robert Maassen, Eberhard Ernst, Hasim Tekines
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Patent number: 11479007Abstract: A plane plate for a pressing tool of a press in which the plane plate activate a punch of the press by way of at least one lifting cylinder that can be displaced along an axial direction.Type: GrantFiled: June 29, 2018Date of Patent: October 25, 2022Assignee: GKN Sinter Metals Engineering GmbHInventors: Rainer Schmitt, Hasim Tekines, Robert Maassen
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Patent number: 11471942Abstract: A plane plate for a pressing tool of a press in which the plane plate for activating a punch of the press by way of at least one lifting cylinder is displaceable along an axial direction. The plane plate has a link to the at least one lifting cylinder, a centrally disposed receptacle 9 for contacting the punch or a punch holder of the press and at least one at least partially cylindrical guiding face, which for contacting a first guide column is parallel with the axial direction. The plane plate has, in at least a first cross section which runs through the link and the receptacle parallel with the axial direction and along a radial direction that runs so as to be perpendicular to the axial direction, at least a first region between the link and the receptacle, having a wall thickness, wherein the wall thickness in the first region and so as to be spaced apart from the receptacle as well as from the link has at least a minimum.Type: GrantFiled: June 29, 2018Date of Patent: October 18, 2022Assignee: GKN Sinter Metals Engineering GmbHInventors: Rainer Schmitt, Hasim Tekines, Robert Maassen
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Patent number: 11465203Abstract: A plane plate for a pressing tool of a press in which the plane plate for activating a punch of the press is by way of at least one lifting cylinder is displaceable along an axial direction. The plane plate has a link to the at least one lifting cylinder, a centrally disposed receptacle for contacting the punch or a punch holder of the press and at least one at least partially cylindrical guiding face which for contacting a guide column is parallel with the axial direction. The plane plate in at least a first cross section which between the receptacle and the guiding face runs parallel with the axial direction and along a radial direction that runs so as to be perpendicular to the axial direction has at least a first region with a wall thickness and a first centerline, wherein the first centerline runs at least partially at a first angle of at least 10 angular degrees and of at most 80 angular degrees in relation to the radial direction.Type: GrantFiled: June 29, 2018Date of Patent: October 11, 2022Assignee: GKN Sinter Metals Engineering GmbHInventors: Rainer Schmitt, Hasim Tekines, Robert Maassen
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Publication number: 20210354415Abstract: The invention relates to a plane plate 1 for a pressing tool 2 of a press 3; wherein the plane plate 1 for activating a punch 6 of the press 3 by way of at least one lifting cylinder 4 can be displaced along an axial direction 5; wherein the plane plate 1 has an upper side 39 that points in a first axial direction 38 and a lower side 41 that points in a second axial direction 40 counter to the first axial direction 38, a link 34 to the at least one lifting cylinder 4, a centrally disposed receptacle 9 for contacting the punch 6 or a punch holder of the press 3, as well as at least a first at least partially cylindrical guiding face 7 which for contacting a first guide column 8 is parallel with the axial direction 5, and a second at least partially cylindrical guiding face 31 which for contacting a second guide column 37 is parallel with the axial direction 5; wherein on the lower side 41 of the plane plate 1 the first guiding face 7 has a first lower end 28 and the second guiding face 31 has a second lower enType: ApplicationFiled: June 29, 2018Publication date: November 18, 2021Inventors: Rainer Schmitt, Hasim Tekines, Robert Maassen
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Patent number: 11148382Abstract: A plane plate for a pressing tool of a press; wherein the plane plate for activating a punch of the press by way of at least one lifting cylinder is displaceable along an axial direction; wherein the plane plate has a link to the at least one lifting cylinder, at least one cylindrical guiding face which for contacting a guide column is parallel with the axial direction, and a centrally disposed receptacle for contacting the punch or a punch holder of the press; wherein the plane plate in at least a first cross section which between the receptacle and the guiding face runs parallel with the axial direction and along a radial direction that runs so as to be perpendicular to the axial direction has at least a first region in which a wall thickness of the plane plate is continuously variable.Type: GrantFiled: June 29, 2018Date of Patent: October 19, 2021Assignee: GKN Sinter Metals Engineering GmbHInventors: Rainer Schmitt, Hasim Tekines, Robert Maassen
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Publication number: 20200222981Abstract: A plane plate for a pressing tool of a press in which the plane plate for activating a punch of the press by way of at least one lifting cylinder is displaceable along an axial direction. The plane plate has a link to the at least one lifting cylinder, a centrally disposed receptacle 9 for contacting the punch or a punch holder of the press and at least one at least partially cylindrical guiding face which for contacting a first guide column is parallel with the axial direction. The plane plate has, in at least a first cross section which runs through the link and the receptacle parallel with the axial direction and along a radial direction that runs so as to be perpendicular to the axial direction, at least a first region, between the link and the receptacle, having a wall thickness, wherein the wall thickness in the first region and so as to be spaced apart from the receptacle as well as from the link has at least a minimum.Type: ApplicationFiled: June 29, 2018Publication date: July 16, 2020Inventors: Rainer Schmitt, Hasim Tekines, Robert Maassen
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Publication number: 20200206813Abstract: A plane plate for a pressing tool of a press in which the plane plate for activating a punch of the press is by way of at least one lifting cylinder is displaceable along an axial direction. The plane plate has a link to the at least one lifting cylinder, a centrally disposed receptacle for contacting the punch or a punch holder of the press and at least one at least partially cylindrical guiding face which for contacting a guide column is parallel with the axial direction. The plane plate in at least a first cross section which between the receptacle and the guiding face runs parallel with the axial direction and along a radial direction that runs so as to be perpendicular to the axial direction has at least a first region with a wall thickness and a first centerline, wherein the first centerline runs at least partially at a first angle of at least 10 angular degrees and of at most 80 angular degrees in relation to the radial direction.Type: ApplicationFiled: June 29, 2018Publication date: July 2, 2020Inventors: Rainer Schmitt, Hasim Tekines, Robert Maassen
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Publication number: 20200122423Abstract: A plane plate for a pressing tool of a press; wherein the plane plate for activating a punch of the press by way of at least one lifting cylinder is displaceable along an axial direction; wherein the plane plate has a link to the at least one lifting cylinder, at least one cylindrical guiding face which for contacting a guide column is parallel with the axial direction, and a centrally disposed receptacle for contacting the punch or a punch holder of the press; wherein the plane plate in at least a first cross section which between the receptacle and the guiding face runs parallel with the axial direction and along a radial direction that runs so as to be perpendicular to the axial direction has at least a first region in which a wall thickness of the plane plate is continuously variable.Type: ApplicationFiled: June 29, 2018Publication date: April 23, 2020Inventors: Rainer Schmitt, Hasim Tekines, Robert Maassen
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Publication number: 20180281063Abstract: The present invention relates to a punching tool of a sintering press, comprising at least one lower punch and an upper punch, a first punch of the upper punch and/or lower punch having a top piece that is asymmetric with respect to an axial axis of the punch press. The first punch has a geometry which widens from the top piece towards a base and is also asymmetric with respect to the axial axis of the punch press. The invention further relates to a method for pressing at least one powdery material to a green body in a sintering press.Type: ApplicationFiled: September 16, 2016Publication date: October 4, 2018Inventors: Rainer Schmitt, Robert Maassen, Eberhard Ernst, Hasim Tekines
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Publication number: 20180257137Abstract: The invention relates to a sintering press which comprises at least one upper punch and a lower punch, a powder reservoir for filling a female die of the sintering press with at least one powder material that can be sintered, and a female die for producing a green body using the powder material from the powder reservoir. A first punch of the upper punches and/or lower punches has a punch top which is off-center and asymmetric with respect to an axial axis of the sintering press and which can be moved in the female die along a female die outer wall and/or along an adjacent punch without being guided inside the female die. The first punch is asymmetric in shape between the punch top and the base, which shape at least reduces an axial tilting of the punch and a lateral drag of the punch top on an adjacent outer surface in the female die, in particular prevents such tilting and dragging, during insertion and extraction therefrom during a pressing step in the production of the green body.Type: ApplicationFiled: September 16, 2016Publication date: September 13, 2018Inventors: Rainer Schmitt, Robert Maassen, Eberhard Ernst, Hasim Tekines