Patents by Inventor Francesco Vignolo
Francesco Vignolo 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: 10145473Abstract: A gasket for sealing a compartment between a fixed and a roto-translatory member. The gasket has a metal support ring adapted to be connected to the fixed member; first sealing means in a position adjacent to a first ambient containing lubricant and defining two first annular sealing lips axially spaced to cooperate with the roto-translatory member and to counter the passage of lubricant/external contaminants between the first ambient and a second ambient connected with the outside; and second sealing means axially interposed between the first sealing means and the second ambient and defining a second sealing lip axially spaced from the first annular sealing lips and adapted to cooperate with the roto-translatory member to counter the passage of external contaminants towards the first sealing lips; the first sealing means comprise two first distinct sealing rings, axially arranged side by side and respectively carrying a relative first sealing lip.Type: GrantFiled: April 6, 2016Date of Patent: December 4, 2018Assignee: FREUDENBERG SEALING TECHNOLOGIES S.A.S. DI EXTERNA ITALIA S.R.L.U.Inventors: Pasquale Angiulli, Luca Breusa, Francesco Vignolo, Stefano Miletto, Maurizio Buro
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Patent number: 9915347Abstract: A cassette seal having an internal ring with a cylindrical portion; a cover portion radially projecting from the cylindrical portion, and a covering portion axially projecting from the cover portion, wherein the covering portion is radially spaced from the cylindrical portion, and an external ring with axial flange, and a radial flange projecting in the internal ring direction, with a sealing body of an elastomeric material associated with the axial flange, wherein from the sealing body sealing lips are formed, wherein a first sealing lip with radial preload sealingly rests against the cylindrical portion's outer circumference, wherein a second sealing lip axially projects from the radial flange and extends in the direction of the covering portion's side facing the cylindrical portion, wherein a third sealing lip axially projects beyond the radial flange and on the outer circumference at least partly projects beyond the covering portion.Type: GrantFiled: May 26, 2015Date of Patent: March 13, 2018Assignee: CARL FREUDENBERG KGInventors: Stefano Miletto, Luca Breusa, Francesco Vignolo, Pasquale Angiulli, Antonio Turaglio
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Publication number: 20160298770Abstract: A gasket for sealing a compartment between a fixed and a roto-translatory member. The gasket has a metal support ring adapted to be connected to the fixed member; first sealing means in a position adjacent to a first ambient containing lubricant and defining two first annular sealing lips axially spaced to cooperate with the roto-translatory member and to counter the passage of lubricant/external contaminants between the first ambient and a second ambient connected with the outside; and second sealing means axially interposed between the first sealing means and the second ambient and defining a second sealing lip axially spaced from the first annular sealing lips and adapted to cooperate with the roto-translatory member to counter the passage of external contaminants towards the first sealing lips; the first sealing means comprise two first distinct sealing rings, axially arranged side by side and respectively carrying a relative first sealing lip.Type: ApplicationFiled: April 6, 2016Publication date: October 13, 2016Inventors: Pasquale Angiulli, Luca Breusa, Francesco Vignolo, Stefano Miletto, Maurizio Buro
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Publication number: 20150337961Abstract: A cassette seal having an internal ring with a cylindrical portion; a cover portion radially projecting from the cylindrical portion, and a covering portion axially projecting from the cover portion, wherein the covering portion is radially spaced from the cylindrical portion, and an external ring with axial flange, and a radial flange projecting in the internal ring direction, with a sealing body of an elastomeric material associated with the axial flange, wherein from the sealing body sealing lips are formed, wherein a first sealing lip with radial preload sealingly rests against the cylindrical portion's outer circumference, wherein a second sealing lip axially projects from the radial flange and extends in the direction of the covering portion's side facing the cylindrical portion, wherein a third sealing lip axially projects beyond the radial flange and on the outer circumference at least partly projects beyond the covering portion.Type: ApplicationFiled: May 26, 2015Publication date: November 26, 2015Inventors: Stefano Miletto, Luca Breusa, Francesco Vignolo, Pasquale Angiulli, Antonio Turaglio
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Patent number: 7931278Abstract: There is described a seal assembly for sealing the gap between a rotary member and a fixed member, so as to prevent passage of a fluid from a first to a second environment located on opposite sides of the gap; the seal assembly has a first ring integral with the rotary member, a second ring integral with the fixed member, and an elastically deformable sealing member integral with the second ring and in turn having at least one lip cooperating in fluidtight manner with a mating portion of the first ring; and, on the side cooperating with the mating portion, the sealing member has a spiral groove which, in use, produces a fluid-dynamic pumping effect to pump the fluid away from the sealing area and towards the first environment.Type: GrantFiled: September 22, 2005Date of Patent: April 26, 2011Assignee: Corcos Industriale S.A.S. di Externa Italia S.R.LInventors: Filip Krulis, Francesco Vignolo
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Publication number: 20090127791Abstract: A seal assembly seals a gap between a fixed member and a rotating member housed therein, to prevent flow of oil from a first environment to a second environment of the gap. The assembly includes a first ring fitted to the rotating member, a second ring fitted to the fixed member, an elastically deformable seal attached to the second ring and comprising a first lip cooperating in a fluid-tight manner with a first mating portion of the first ring, and a spiral groove on the first lip to generate, during rotation of the rotating member, a fluid-dynamic pumping action to pump oil from a sealing area to the first environment. A second lip of the seal forms a contact seal with a second mating portion of the first ring when the rotating member is stopped, and a configuration detached from the second mating portion during rotation of the rotating member.Type: ApplicationFiled: November 5, 2008Publication date: May 21, 2009Applicant: CORCOS INDUSTRIALE DI FREUDENBERG & COSSO S.R.L. S.A.S.Inventors: Maurizio Buro, Francesco Vignolo
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Publication number: 20070063450Abstract: There is described a seal assembly for sealing the gap between a rotary member and a fixed member, so as to prevent passage of a fluid from a first to a second environment located on opposite sides of the gap; the seal assembly has a first ring integral with the rotary member, a second ring integral with the fixed member, and an elastically deformable sealing member integral with the second ring and in turn having at least one lip cooperating in fluidtight manner with a mating portion of the first ring; and, on the side cooperating with the mating portion, the sealing member has a spiral groove which, in use, produces a fluid-dynamic pumping effect to pump the fluid away from the sealing area and towards the first environment.Type: ApplicationFiled: September 22, 2005Publication date: March 22, 2007Applicant: Corcos Industriale S.p.A.Inventors: Filip Krulis, Francesco Vignolo