Patents by Inventor David Gelfand
David Gelfand 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: 12352345Abstract: A disconnectable differential assembly has a reduced axial length and a side gear disconnectable from an axle shaft via a clutch unit. Various components of the disconnect mechanism are axially aligned and concentric to reduce the axial length. An output hub splined on the axle shaft and is actuatable, via an axially shiftable armature, into toothed engagement with the side gear via respective axially extending teeth. The output hub and armature include radially extending flanges that are axially adjacent and radially aligned with the teeth so that force is transmitted to the teeth at the same diameter. A thrust bearing is disposed between the flanges so that the output hub rotates relative to the armature. The side gear is supported for rotation on the axle shaft, and a bearing is disposed radially therebetween to improve radial alignment of the second side gear with the output hub.Type: GrantFiled: January 28, 2025Date of Patent: July 8, 2025Assignee: Magna Powertrain, Inc.Inventors: Dusan Milacic, Sean Steele, Myron Samila, Stephen Yang, David Gelfand
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Patent number: 12240321Abstract: A disconnectable differential assembly has a reduced axial length and a side gear disconnectable from an axle shaft via a clutch unit. Various components of the disconnect mechanism are axially aligned and concentric to reduce the axial length. An output hub splined on the axle shaft and is actuatable, via an axially shiftable armature, into toothed engagement with the side gear via respective axially extending teeth. The output hub and armature include radially extending flanges that are axially adjacent and radially aligned with the teeth so that force is transmitted to the teeth at the same diameter. A thrust bearing is disposed between the flanges so that the output hub rotates relative to the armature. The side gear is supported for rotation on the axle shaft, and a bearing is disposed radially therebetween to improve radial alignment of the second side gear with the output hub.Type: GrantFiled: April 13, 2022Date of Patent: March 4, 2025Assignee: Magna Powertrain, Inc.Inventors: Dusan Milacic, Sean Steele, Myron Samila, Stephen Yang, David Gelfand
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Publication number: 20240198794Abstract: A disconnectable differential assembly has a reduced axial length and a side gear disconnectable from an axle shaft via a clutch unit. Various components of the disconnect mechanism are axially aligned and concentric to reduce the axial length. An output hub splined on the axle shaft and is actuatable, via an axially shiftable armature, into toothed engagement with the side gear via respective axially extending teeth. The output hub and armature include radially extending flanges that are axially adjacent and radially aligned with the teeth so that force is transmitted to the teeth at the same diameter. A thrust bearing is disposed between the flanges so that the output hub rotates relative to the armature. The side gear is supported for rotation on the axle shaft, and a bearing is disposed radially therebetween to improve radial alignment of the second side gear with the output hub.Type: ApplicationFiled: April 13, 2022Publication date: June 20, 2024Inventors: Dusan Milacic, Sean Steele, Myron Samila, Stephen Yang, David Gelfand
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Patent number: 11519468Abstract: A bi-directional clutch assembly equipped with a pair of laterally-spaced, selectable one-way clutches configured in a compact arrangement. The bi-directional clutch assembly establishes a LOCK-LOCK mode when both SOWC's are non-actuated, establishes a FREEWHEEL mode when both SOWC's are actuated, and establishes a pair of LOCK-RATCHET mode when one SOWC is actuated and the other is not actuated. Coils units of the SOWC's are energized to shift an actuator toward active struts of an outer race. The actuator is rotationally fixed to the outer race. The active struts are biased toward the deployed position, and the actuator is biased toward the non-actuated position. The actuator includes a strut engagement feature that contacts the active struts and causes pivotal movement of the active struts to the non-deployed position.Type: GrantFiled: March 31, 2020Date of Patent: December 6, 2022Assignee: MAGNA POWERTRAIN INC.Inventors: David Gelfand, Adrian Cioc
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Publication number: 20220163073Abstract: A bi-directional clutch assembly equipped with a pair of laterally-spaced, selectable one-way clutches configured in a compact arrangement. The bi-directional clutch assembly establishes a LOCK-LOCK mode when both SOWC's are non-actuated, establishes a FREEWHEEL mode when both SOWC's are actuated, and establishes a pair of LOCK-RATCHET mode when one SOWC is actuated and the other is not actuated. Coils units of the SOWC's are energized to shift an actuator toward active struts of an outer race. The actuator is rotationally fixed to the outer race. The active struts are biased toward the deployed position, and the actuator is biased toward the non-actuated position. The actuator includes a strut engagement feature that contacts the active struts and causes pivotal movement of the active struts to the non-deployed position.Type: ApplicationFiled: March 31, 2020Publication date: May 26, 2022Inventors: David GELFAND, Adrian CIOC
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Patent number: 11255387Abstract: A controllable one-way clutch assembly having an electromagnetic actuator module equipped with an energizeable coil assembly, a strut moveable in response to energization of the coil assembly from a released position to a locked position, and a latching mechanism operable to releaseably hold the strut in the released position when the coil assembly is not energized.Type: GrantFiled: February 22, 2018Date of Patent: February 22, 2022Assignee: MAGNA POWERTRAIN INC.Inventors: Darrell Greene, Alberto Passos, Dennis (Tak Man) Loui, Dusan Milacic, David Gelfand, Adrian Cioc, Ranjit Uppal
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Publication number: 20210140492Abstract: A controllable one-way clutch assembly having an electromagnetic actuator module equipped with an energizeable coil assembly, a strut moveable in response to energization of the coil assembly from a released position to a locked position, and a latching mechanism operable to releaseably hold the strut in the released position when the coil assembly is not energized.Type: ApplicationFiled: February 22, 2018Publication date: May 13, 2021Inventors: Darrell GREENE, Alberto PASSOS, Dennis (Tak Man) LOUI, Dusan MILACIC, David GELFAND, Adrian CIOC, Ranjit UPPAL
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Patent number: 7890268Abstract: The present invention is directed to an improved analysis procedure for the comparative sequencing of nucleic acids using multistage mass spectrometry. More precisely, the invention is directed to a method enabling the de-novo sequencing of nucleic acid molecules using multistage mass spectrometry.Type: GrantFiled: December 14, 2005Date of Patent: February 15, 2011Assignee: Roche Molecular Systems, Inc.Inventors: Thomas Koch, Roderic Fuerst, Uwe Kobold, Dieter Heindl, Herbert von der Eltz, David Gelfand, Ivo Gut, Christoph Steinbeck
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Publication number: 20070154914Abstract: The present invention provides reaction mixtures that include blocked oligonucleotides comprising 2?-terminator nucleotides. The blocked oligonucleotides are rendered extendible when the 2?-terminator nucleotides are removed from the oligonucleotides, e.g., via pyrophosphorolysis. The reaction mixtures can be used in various nucleic acid polymerization and/or amplification assays, among many other applications. In addition to reaction mixtures, the invention also provides related methods and reaction mixtures.Type: ApplicationFiled: October 18, 2006Publication date: July 5, 2007Applicant: ROCHE MOLECULAR SYSTEMS, INC.Inventors: David Gelfand, Keith Bauer, Amar Gupta, Veeraiah Bodepudi, John Niemiec
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Publication number: 20060257885Abstract: A process of detecting a target nucleic acid using labeled oligonucleotides uses the 5? to 3? nuclease activity of a nucleic acid polymerase to cleave annealed labeled oligonucleotide from hybridized duplexes and release labeled oligonucleotide fragments for detection. This process is easily incorporated into a PCR amplification, assay.Type: ApplicationFiled: August 11, 2005Publication date: November 16, 2006Inventors: David Gelfand, Pamela Holland, Randall Saiki, Robert Watson
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Publication number: 20060084092Abstract: A process of detecting a target nucleic acid using labeled oligonucleotides uses the 5? to 3? nuclease activity of a nucleic acid polymerase to cleave annealed labeled oligonucleotide from hybridized duplexes and release labeled oligonucleotide fragments for detection. This process is easily incorporated into a PCR amplification assay.Type: ApplicationFiled: August 11, 2005Publication date: April 20, 2006Inventors: David Gelfand, Pamela Holland, Randall Saiki, Robert Watson
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Publication number: 20060078914Abstract: A process of detecting a target nucleic acid using labeled oligonucleotides uses the 5? to 3? nuclease activity of a nucleic acid polymerase to cleave annealed labeled oligonucleotide from hybridized duplexes and release labeled oligonucleotide fragments for detection. This process is easily incorporated into a PCR amplification, assay.Type: ApplicationFiled: August 11, 2005Publication date: April 13, 2006Inventors: David Gelfand, Pamela Holland, Randall Saiki, Robert Watson
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Publication number: 20050255499Abstract: A process of detecting a target nucleic acid using labeled oligonucleotides uses the 5? to 3? nuclease activity of a nucleic acid polymerase to cleave annealed labeled oligonucleotide from hybridized duplexes and release labeled oligonucleotide fragments for detection. This process is easily incorporated into a PCR amplification assay.Type: ApplicationFiled: January 27, 2005Publication date: November 17, 2005Inventors: David Gelfand, Pamela Holland, Randall Saiki, Robert Watson
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Publication number: 20050037398Abstract: The present invention provides methods of extending primer nucleic acids and sequencing target nucleic acids. The methods include the use of 2?-terminator nucleotides to effect chain termination. In addition to related reaction mixtures and kits, the invention also provides computers and computer readable media.Type: ApplicationFiled: June 28, 2004Publication date: February 17, 2005Applicant: Roche Molecular Systems, Inc.Inventors: David Gelfand, Fred Reichert, Veeraiah Bodepudi, Amar Gupta, Stephen Will, Thomas Myers
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Publication number: 20050037991Abstract: The invention provides compositions the comprise nucleotides and/or nucleosides having blocking groups at 2?-positions of sugar moieties. Methods of synthesizing these nucleic acids are also provided.Type: ApplicationFiled: June 28, 2004Publication date: February 17, 2005Applicant: Roche Molecular Systems, Inc.Inventors: Veeraiah Bodepudi, Stephen Will, David Gelfand