Patents by Inventor Dominique Lutaud
Dominique Lutaud 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: 10865882Abstract: Disclosed is a sealing device for a rotary shaft, including a seal mounted fixedly in a passage through which the shaft passes, providing a sealed barrier and consisting of a bearing ring with an external axial flange and a radial flange, and a sealing washer attached to the bearing ring, surrounds the axial flange and extends inward along that face of the radial flange that faces toward the outside, to end in a sealing lip bearing slidingly against the rotary shaft to be sealed, the sealing device also including a protective unit protecting against contaminants. The protective unit includes an additional ring which is secured to the rotary shaft, which is positioned on the exterior side of the seal, and which includes a radial flange which, in collaboration with the radial flange of the bearing ring of the seal, forms an annular structure of the chicane or labyrinth type.Type: GrantFiled: February 9, 2017Date of Patent: December 15, 2020Assignees: CARL FREUDENBERG KG, FREUDENBERG SASInventors: Charlie Lutaud, Olivier Forte, Dominique Lutaud
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Publication number: 20190017602Abstract: Disclosed is a sealing device for a rotary shaft, including a seal mounted fixedly in a passage through which the shaft passes, providing a sealed barrier and consisting of a bearing ring with an external axial flange and a radial flange, and a sealing washer attached to the bearing ring, surrounds the axial flange and extends inward along that face of the radial flange that faces toward the outside, to end in a sealing lip bearing slidingly against the rotary shaft to be sealed, the sealing device also including a protective unit protecting against contaminants. The protective unit includes an additional ring which is secured to the rotary shaft, which is positioned on the exterior side of the seal, and which includes a radial flange which, in collaboration with the radial flange of the bearing ring of the seal, forms an annular structure of the chicane or labyrinth type.Type: ApplicationFiled: February 9, 2017Publication date: January 17, 2019Inventors: Charlie LUTAUD, Olivier FORTE, Dominique LUTAUD
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Patent number: 9851010Abstract: A seal with, on the one hand, a support body in the form of a carrier ring with an axial leg and, on the other hand, a sealing washer which is placed or arranged on the carrier ring and which surrounds the axial leg on the outer periphery, said carrier ring being made of a metallic material, wherein the carrier ring is made of a sheet of the HYS type.Type: GrantFiled: February 4, 2013Date of Patent: December 26, 2017Assignee: CARL FREUDENBERG KGInventors: Luc Humblot, Dominique Lutaud
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Patent number: 9845882Abstract: A double sealing device for a rotating shaft comprising a first and a second seal of annular form mounted side by side in a peripheral groove formed in a wall of a circular cylindrical housing through which the shaft to be sealed passes. At least one of a discharge or vent channel opens into the peripheral groove between the two seals. The seals comprise a carrier ring with an outer axial flange and an inner radial flange, and a sealing washer applied to each carrier ring to cover a part of an outer face of the axial flange. A sealing lip bearing is formed slidably on the shaft, the first seal sealing a first fluid medium and the second seal sealing a second fluid medium. The axial flange has an extension forming a pierced structure, not covered by the sealing washer of the seal, and disposed facing the peripheral groove.Type: GrantFiled: March 12, 2015Date of Patent: December 19, 2017Assignee: CARL FREUDENBERG KGInventor: Dominique Lutaud
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Patent number: 9388904Abstract: A gasket, in particular for a pressurized liquid, includes: a support ring (2) having an axial flange (3) and a radial flange (4); and a PTFE washer (5) arranged on the ring (2), the washer at least partially covering the outer face (3?) of the axial flange (3) and forming a flexible inner sealing lip (6) intended to be applied against an element to be sealed, such as a shaft. The sealing lip (6) includes an annular portion bearing mostly on the element to be sealed and a curved annular connecting portion. The sealing lip (6) has a small thickness (EL), typically less than 0.8 mm, and, in the absence of stress, substantially forms a frustoconical ring or sleeve having a vertex angle of between 40° and 80°.Type: GrantFiled: September 16, 2013Date of Patent: July 12, 2016Assignee: CARL FREUDENBERG KGInventors: Thierry Girardot, Dominique Lutaud, Arnaud Soudet
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Publication number: 20150260291Abstract: A double sealing device for a rotating shaft comprising a first and a second seal of annular form mounted side by side in a peripheral groove formed in a wall of a circular cylindrical housing through which the shaft to be sealed passes. At least one of a discharge or vent channel opens into the peripheral groove between the two seals. The seals comprise a carrier ring with an outer axial flange and an inner radial flange, and a sealing washer applied to each carrier ring to cover a part of an outer face of the axial flange. A sealing lip bearing is formed slidably on the shaft, the first seal sealing a first fluid medium and the second seal sealing a second fluid medium. The axial flange has an extension forming a pierced structure, not covered by the sealing washer of the seal, and disposed facing the peripheral groove.Type: ApplicationFiled: March 12, 2015Publication date: September 17, 2015Inventor: Dominique Lutaud
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Publication number: 20150226332Abstract: A gasket, in particular for a pressurized liquid, includes: a support ring (2) having an axial flange (3) and a radial flange (4); and a PTFE washer (5) arranged on the ring (2), the washer at least partially covering the outer face (3?) of the axial flange (3) and forming a flexible inner sealing lip (6) intended to be applied against an element to be sealed, such as a shaft. The sealing lip (6) includes an annular portion bearing mostly on the element to be sealed and a curved annular connecting portion. The sealing lip (6) has a small thickness (EL), typically less than 0.8 mm, and, in the absence of stress, substantially forms a frustoconical ring or sleeve having a vertex angle of between 40° and 80°.Type: ApplicationFiled: September 16, 2013Publication date: August 13, 2015Inventors: Thierry Girardot, Dominique Lutaud, Arnaud Soudet
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Patent number: 8727356Abstract: Seal (1) for sealing a shaft (2), comprising a supporting ring (3) and at least one sealing lip (4) made of polymeric material, the pressing of the sealing lip (4) against the shaft (2) taking place by magnetic interaction, the sealing lip (4) containing magnetizable particles (5).Type: GrantFiled: January 8, 2007Date of Patent: May 20, 2014Assignee: Carl Freudenberg KGInventors: Dominique Lutaud, Fabrice Fougerolle
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Patent number: 7460010Abstract: The invention relates to a system for detecting the rotational motion of a shaft in a machine housing, comprising a measuring transmitter, which is connected to the shaft, at least one measuring sensor, which is provided on the machine housing, and a measuring transducer connected to a measuring sensor. The invention is characterized in that the measuring sensor(s) (8 and 15 to 20) is/are supplied with current by a separate energy accumulator (11).Type: GrantFiled: November 13, 2003Date of Patent: December 2, 2008Assignee: Carl Freudenberg KGInventors: Eric Kammerer, Dominique Lutaud
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Patent number: 7265537Abstract: A sensor device for a shaft of a machine having a machine housing, the shaft having a shaft circumference and the machine housing having a sealed receiving bore. The sensor device includes a sensor for measuring motion parameters of the shaft and a stationary annular sensor housing that supports the sensor and encircles the shaft about the shaft circumference in a centered manner and at a distance. The sensor housing is retained in the receiving bore by a press fit or screw connection.Type: GrantFiled: September 27, 2005Date of Patent: September 4, 2007Assignee: Carl Freudenberg KGInventors: Dominique Lutaud, Eric Kammerer
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Publication number: 20070200300Abstract: Seal (1) for sealing a shaft (2), comprising a supporting ring (3) and at least one sealing lip (4) made of polymeric material, the pressing of the sealing lip (4) against the shaft (2) taking place by magnetic interaction, the sealing lip (4) containing magnetizable particles (5).Type: ApplicationFiled: January 8, 2007Publication date: August 30, 2007Inventors: Dominique Lutaud, Fabrice Fougerolle
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Publication number: 20060202814Abstract: The invention relates to a system for detecting the rotational motion of a shaft in a machine housing, comprising a measuring transmitter, which is connected to the shaft, at least one measuring sensor, which is provided on the machine housing, and a measuring transducer connected to a measuring sensor. The invention is characterized in that the measuring sensor(s) (8 and 15 to 20) is/are supplied with current by a separate energy accumulator (11).Type: ApplicationFiled: November 13, 2003Publication date: September 14, 2006Applicant: Carl Freudenberg KGInventors: Eric Kammerer, Dominique Lutaud
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Publication number: 20060022665Abstract: A sensor device for a shaft of a machine having a machine housing, the shaft having a shaft circumference and the machine housing having a sealed receiving bore. The sensor device includes a sensor for measuring motion parameters of the shaft and a stationary annular sensor housing that supports the sensor and encircles the shaft about the shaft circumference in a centered manner and at a distance. The sensor housing is retained in the receiving bore by a press fit or screw connection.Type: ApplicationFiled: September 27, 2005Publication date: February 2, 2006Applicant: Carl Freudenberg KGInventors: Dominique Lutaud, Eric Kammerer
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Publication number: 20060012128Abstract: A lip sealing ring for a relatively movable machine element (1), including a flexible sealing lip (2) made of polymeric material which adjacently encloses the machine element (1) in the region of a sealing gap (3) under elastic prestressing, the sealing gap (3) being penetrated in the longitudinal direction (5) in at least one circumferential location by a spiral stage (4); the spiral stage (4) being bounded by a screw thread-shaped groove (6) in the sealing lip and by the surface (7) of the machine element (1) to be sealed, facing the groove; and the groove (6) connecting the space (8) to be sealed to the surroundings (9). Sealing gap (3) is closed by a thixotropic medium (10) in the region of groove (6) bounding the spiral stage (4).Type: ApplicationFiled: July 25, 2005Publication date: January 19, 2006Inventor: Dominique Lutaud
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Patent number: 6921082Abstract: A lip sealing ring for a relatively movable machine element (1), including a flexible sealing lip (2) made of polymeric material which adjacently encloses the machine element (1) in the region of a sealing gap (3) under elastic prestressing, the sealing gap (3) being penetrated in the longitudinal direction (5) in at least one circumferential location by a spiral stage (4); the spiral stage (4) being bounded by a screw thread-shaped groove (6) in the sealing lip and by the surface (7) of the machine element (1) to be sealed, facing the groove; and the groove (6) connecting the space (8) to be sealed to the surroundings (9). Sealing gap (3) is closed by a thixotropic medium (10) in the region of groove (6) bounding the spiral stage (4).Type: GrantFiled: July 12, 2002Date of Patent: July 26, 2005Assignee: Carl Freudenberg KGInventor: Dominique Lutaud
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Publication number: 20040145365Abstract: A sensor device for a shaft of a machine having a machine housing, the shaft having a shaft circumference and the machine housing having a sealed receiving bore. The sensor device includes a sensor for measuring motion parameters of the shaft and a stationary annular sensor housing that supports the sensor and encircles the shaft about the shaft circumference in a centered manner and at a distance. The sensor housing is retained in the receiving bore by a press fit or screw connection.Type: ApplicationFiled: January 24, 2003Publication date: July 29, 2004Applicant: Carl Freudenberg KGInventors: Dominique Lutaud, Eric Kammerer
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Publication number: 20040007826Abstract: A lip sealing ring for a relatively movable machine element (1), including a flexible sealing lip (2) made of polymeric material which adjacently encloses the machine element (1) in the region of a sealing gap (3) under elastic prestressing, the sealing gap (3) being penetrated in the longitudinal direction (5) in at least one circumferential location by a spiral stage (4); the spiral stage (4) being bounded by a screw thread-shaped groove (6) in the sealing lip and by the surface (7) of the machine element (1) to be sealed, facing the groove; and the groove (6) connecting the space (8) to be sealed to the surroundings (9). Sealing gap (3) is closed by a thixotropic medium (10) in the region of groove (6) bounding the spiral stage (4).Type: ApplicationFiled: July 12, 2002Publication date: January 15, 2004Applicant: Carl Freudenberg KGInventor: Dominique Lutaud
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Publication number: 20030230850Abstract: A device for sealing the gap between a stationary housing and a rotating shaft includes a radial packing ring in a stationary mount in the housing, the packing ring having a sealing lip made of a polymer material that comes in contact with the shaft under an elastic prestress, and a pulse wheel is mounted upstream from the radial packing ring in the direction of the outside air, rotates with the shaft and has a pulse generator surrounding the shaft at a radial distance, and a sensor in a stationary mount for detecting rotational movements of the pulse wheel, the pulse generator (7) being formed by a cylindrical sleeve (24) having magnetic poles (8) facing radially outward or being composed of a generator wheel (13) having teeth (14) and spaces between the teeth on the outer circumference, and the sealing lip (9) is in the form of a ring disk due to the manufacturing method, and in the area of its inner circumference it becomes wider from the direction of the pulse wheel (7), its inner circumference engaging iType: ApplicationFiled: June 9, 2003Publication date: December 18, 2003Applicant: Carl Freudenberg KGInventors: Didier Bruyere, Dominique Lutaud
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Patent number: 6561518Abstract: A seal arrangement having a sealing flange (1) with at least one first seal (2) and a carrier flange (3) with a holder (4) for a sensor (5). The sealing flange (1) and the carrier flange (3) are each produced separately, are made of a metallic material, and are connected with one another with a non-positive and/or a positive lock.Type: GrantFiled: October 25, 2000Date of Patent: May 13, 2003Assignee: Firma Carl FreudenbergInventor: Dominique Lutaud