Patents by Inventor Folly Abevi
Folly Abevi 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: 11940036Abstract: A roller screw mechanism is provided comprising a screw with an outer thread, and a nut disposed around and coaxially with the screw and comprising an inner thread; and with rollers that each have an outer thread and inserted between the screw and the nut, each roller having two ends each provided with an outer gear teeth, each outer gear teeth having, in cross-section, an outer diameter less than or equal to a root diameter of the outer thread of the rollers; and two synchronizing gear teeth disposed coaxially to the screw and in which the outer gear teeth of the rollers engage, wherein the outer gear teeth of the rollers have teeth with a flank having, in cross-section, a convex hypotrochoidal profile and the synchronizing gear teeth have teeth with a flank having, in cross-section, a hypotrochoidal or epitrochoidal profile.Type: GrantFiled: October 18, 2019Date of Patent: March 26, 2024Assignee: ALT BEARINGSInventor: Folly Abevi
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Publication number: 20220018425Abstract: A roller screw mechanism is provided comprising a screw with an outer thread, and a nut disposed around and coaxially with the screw and comprising an inner thread; and with rollers that each have an outer thread and inserted between the screw and the nut, each roller having two ends each provided with an outer gear teeth, each outer gear teeth having, in cross-section, an outer diameter less than or equal to a root diameter of the outer thread of the rollers; and two synchronizing gear teeth disposed coaxially to the screw and in which the outer gear teeth of the rollers engage, wherein the outer gear teeth of the rollers have teeth with a flank having, in cross-section, a convex hypotrochoidal profile and the synchronizing gear teeth have teeth with a flank having, in cross-section, a hypotrochoidal or epitrochoidal profile.Type: ApplicationFiled: October 18, 2019Publication date: January 20, 2022Inventor: Folly ABEVI
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Patent number: 10823275Abstract: The roller screw mechanism provides a screw having an outer thread, a nut surrounding and coaxial with the screw, the nut including an inner thread, and a plurality of rollers radially disposed between the screw and the nut and cooperating with the outer and inner threads. Magnets for attracting metal particles are disposed inside the roller screw mechanism.Type: GrantFiled: September 11, 2015Date of Patent: November 3, 2020Assignee: Aktiebolaget SKFInventors: Folly Abevi, Christian Boch, Georges Claret, Bernard Guetaz
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Patent number: 10584777Abstract: A roller screw mechanism has a screw provided with an outer thread, a nut surrounding and coaxial with the screw, the nut being provided with an inner thread, a plurality of rollers radially disposed between the screw and the nut and each provided with an outer thread engaging the outer and inner threads and with two outer gear teeth, and two synchronization gear teeth meshing with the gear teeth of the rollers. The mechanism further includes one retaining cage for the rollers including a plurality of pockets spaced apart one with another in the circumferential direction. At least the outer thread of each roller is located inside the associated pocket of the cage.Type: GrantFiled: August 7, 2015Date of Patent: March 10, 2020Assignee: Aktiebolaget SKFInventors: Jerome Dubus, Folly Abevi
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Publication number: 20190024777Abstract: The roller screw mechanism provides a screw having an outer thread, a nut surrounding and coaxial with the screw, the nut including an inner thread, and a plurality of rollers radially disposed between the screw and the nut and cooperating with the outer and inner threads. Magnets for attracting metal particles are disposed inside the roller screw mechanism.Type: ApplicationFiled: September 11, 2015Publication date: January 24, 2019Inventors: Folly ABEVI, Christian BOCH, Georges CLARET, Bernard GUETAZ
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Patent number: 10041573Abstract: A roller screw mechanism comprising a screw having an outer thread, a nut disposed around and coaxially with the screw. The nut includes an inner thread. A plurality of rollers are disposed radially between the screw and the nut and are each provided with an outer thread engaged with the outer and inner threads of the screw and of the nut and with two outer gear teeth. The mechanism additionally comprises two synchronizing gear teeth that are formed on the nut and are each engaged with one of the gear teeth of the rollers. The root diameter of each gear teeth is less than the inside diameter of the inner thread of the nut.Type: GrantFiled: September 25, 2015Date of Patent: August 7, 2018Assignee: AKTIEBOLAGET SKFInventors: Folly Abevi, Christian Boch
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Publication number: 20180209522Abstract: A roller screw mechanism has a screw provided with an outer thread, a nut surrounding and coaxial with the screw, the nut being provided with an inner thread, a plurality of rollers radially disposed between the screw and the nut and each provided with an outer thread engaging the outer and inner threads and with two outer gear teeth, and two synchronization gear teeth meshing with the gear teeth of the rollers. The mechanism further includes one retaining cage for the rollers including a plurality of pockets spaced apart one with another in the circumferential direction. At least the outer thread of each roller is located inside the associated pocket of the cage.Type: ApplicationFiled: August 7, 2015Publication date: July 26, 2018Inventors: Jerome Dubus, Folly Abevi
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Patent number: 10018257Abstract: A roller screw mechanism comprises a screw having an outer thread and a nut disposed around and coaxially with the screw. The nut comprises an inner thread. A plurality of rollers are disposed radially between the screw and the nut; each roller being provided with an outer thread engaged with the outer and inner threads of the screw and of the nut and with two outer gear teeth. The mechanism also comprises two synchronizing gear teeth that are each engaged with one of the gear teeth of the rollers. An outside diameter of each gear teeth of each roller is less than a diameter of a root of the thread of the roller. Each tooth of the gear teeth of the rollers comprises planar faces that engage with the synchronizing gear teeth.Type: GrantFiled: September 25, 2015Date of Patent: July 10, 2018Assignee: AKTIEBOLAGET SKFInventors: Folly Abevi, Eric Allegri
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Patent number: 9759298Abstract: A roller screw mechanism comprising a screw, provided with an outer thread, a nut positioned around and coaxially to the screw, the nut being provided with an inner thread, and a plurality of rollers inserted between the screw and the nut, each comprising an outer thread engaged with the outer thread of the screw and with the inner thread of the nut. Each of the threads of the screw, rollers and nut comprise first and second axially opposite flanks, respectively forming a first and second angle with a plane perpendicular to the central axis of the screw, the first and second flanks of each thread of the rollers respectively being in contact with the first and second flanks of the nut's thread and with the first and second flanks of the screw's thread. The value of the first angle is different from the value of the second angle.Type: GrantFiled: August 6, 2015Date of Patent: September 12, 2017Assignee: AKTIEBOLAGET SKFInventors: Folly Abevi, Christian Boch
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Publication number: 20160091068Abstract: A roller screw mechanism comprising a screw having an outer thread, a nut disposed around and coaxially with the screw. The nut includes an inner thread. A plurality of rollers are disposed radially between the screw and the nut and are each provided with an outer thread engaged with the outer and inner threads of the screw and of the nut and with two outer gear teeth. The mechanism additionally comprises two synchronizing gear teeth that are formed on the nut and are each engaged with one of the gear teeth of the rollers. The root diameter of each gear teeth is less than the inside diameter of the inner thread of the nut.Type: ApplicationFiled: September 25, 2015Publication date: March 31, 2016Applicant: AKTIEBOLAGET SKFInventors: Folly ABEVI, Christian BOCH
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Publication number: 20160091067Abstract: A roller screw mechanism comprises a screw having an outer thread and a nut disposed around and coaxially with the screw. The nut comprises an inner thread. A plurality of rollers are disposed radially between the screw and the nut; each roller being provided with an outer thread engaged with the outer and inner threads of the screw and of the nut and with two outer gear teeth. The mechanism also comprises two synchronizing gear teeth that are each engaged with one of the gear teeth of the rollers. An outside diameter of each gear teeth of each roller is less than a diameter of a root of the thread of the roller. Each tooth of the gear teeth of the rollers comprises planar faces that engage with the synchronizing gear teeth.Type: ApplicationFiled: September 25, 2015Publication date: March 31, 2016Applicant: AKTIEBOLAGET SKFInventors: Folly ABEVI, Eric ALLEGRI
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Publication number: 20160053874Abstract: A roller screw mechanism comprising a screw, provided with an outer thread, a nut positioned around and coaxially to the screw, the nut being provided with an inner thread, and a plurality of rollers inserted between the screw and the nut, each comprising an outer thread engaged with the outer thread of the screw and with the inner thread of the nut. Each of the threads of the screw, rollers and nut comprise first and second axially opposite flanks, respectively forming a first and second angle with a plane perpendicular to the central axis of the screw, the first and second flanks of each thread of the rollers respectively being in contact with the first and second flanks of the nut's thread and with the first and second flanks of the screw's thread. The value of the first angle is different from the value of the second angle.Type: ApplicationFiled: August 6, 2015Publication date: February 25, 2016Applicant: Aktiebolaget SKFInventors: Folly ABEVI, Christian BOCH
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Patent number: 9267587Abstract: A roller screw mechanism provided with a screw having an external thread, a nut surrounding and coaxial with the screw, the nut including an internal thread, two gear wheels mounted in a non-threaded part of the nut, each gear wheel providing a first set of teeth having a plurality of internal teeth, and a plurality of rollers radially located between the screw and the nut, each roller having an external thread designed to engage the external and internal threads of the screw and the nut, and axially at each end a first set of teeth having a plurality of gear teeth designed to engage with the internal gear teeth of the gear wheels. The outer diameter of the gear teeth of each roller is less or equal to the diameter of the thread root of the external thread of the roller.Type: GrantFiled: March 25, 2014Date of Patent: February 23, 2016Assignee: AKTIEBOLAGET SKFInventors: Folly Abevi, Eric Allegri
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Publication number: 20150300467Abstract: A roller screw mechanism including a screw provided with an outer thread, a nut surrounding and coaxial with the screw, the nut being provided with an inner thread, a plurality of rollers radially disposed between the screw and the nut and each provided with an outer thread and with two outer gear teeth two gear wheels each provided with gear teeth meshing with the gear teeth of the rollers, and two spacer rings for maintaining the rollers circumferentially spaced apart. The spacer rings are axially offset towards the inside relative to the gear teeth of the gear wheels.Type: ApplicationFiled: April 21, 2014Publication date: October 22, 2015Applicant: Aktiebolaget SKFInventors: Eric ALLEGRI, Folly Abevi
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Publication number: 20150276030Abstract: A roller screw mechanism provided with a screw having an external thread, a nut surrounding and coaxial with the screw, the nut including an internal thread, two gear wheels mounted in a non-threaded part of the nut, each gear wheel providing a first set of teeth having a plurality of internal teeth, and a plurality of rollers radially located between the screw and the nut, each roller having an external thread designed to engage the external and internal threads of the screw and the nut, and axially at each end a first set of teeth having a plurality of gear teeth designed to engage with the internal gear teeth of the gear wheels. The outer diameter of the gear teeth of each roller is less or equal to the diameter of the thread root of the external thread of the roller.Type: ApplicationFiled: March 25, 2014Publication date: October 1, 2015Applicant: Aktiebolaget SKFInventors: Folly Abevi, Eric Allegri