Patents by Inventor Omar S. Dessouki
Omar S. Dessouki 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: 9527132Abstract: One embodiment of the invention may include a product including a body portion including a first face and a frictional damping insert overlying the first face of the body portion. The body portion may include a second face overlying the insert. The insert may have a throughhole and a portion of the body portion may extend from the first face through the throughhole and the insert to the second face of the body portion.Type: GrantFiled: July 16, 2008Date of Patent: December 27, 2016Assignee: GM Global Technology Operations LLCInventors: Brent D. Lowe, Mark T. Riefe, Omar S. Dessouki, Mohan Sundar, Kevin M. Thompson
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Patent number: 9441686Abstract: A brake assembly includes a brake pad, a bracket supporting the brake pad and having a first portion, a second portion spaced apart from the first portion, and a linkage interconnecting the first and second portions. The linkage is configured to transfer tensile loads between the first and second portion, but is characterized by the absence of any bending modes. The absence of bending modes prevents excitation of the linkage, thereby reducing sound generated during application of the brake assembly.Type: GrantFiled: May 24, 2013Date of Patent: September 13, 2016Assignee: GM Global Technology Operations LLCInventors: Brent D. Lowe, Mark T. Riefe, Omar S. Dessouki, Mohan Sundar, Chia N. Yang
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Patent number: 9163682Abstract: A friction damped brake drum for reducing vibrations in a brake drum.Type: GrantFiled: July 24, 2008Date of Patent: October 20, 2015Assignee: GM Global Technology Operations LLCInventors: Omar S. Dessouki, Brent D. Lowe, Mark T. Riefe, Patrick J. Monsere, Mohan Sundar
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Patent number: 8820491Abstract: The invention provides a method for manufacturing a friction damped disc brake rotor, including the steps of: (A) providing a ceramic coating on an insert, wherein the insert has a body with tabs extending therefrom to hold the insert in a desired position within a mold; (B) washing the ceramic coating off of the tabs; (C) positioning the insert into the mold; and (D) casting a rotor cheek of the disc brake rotor in the mold around the insert such that a portion of each tab is bonded with the rotor cheek, and such that the coating is substantially non-bonded with the rotor cheek so that the coating provides a proper interfacial boundary between the body and the cheek for damping, and the at least partial bonding of each tab with the rotor cheek prevents corrosion-causing exterior elements from reaching the interfacial boundary when the friction damped disc brake rotor is in use.Type: GrantFiled: April 26, 2011Date of Patent: September 2, 2014Assignee: GM Global Technology Operations LLCInventors: Michael D. Hanna, James G. Schroth, Richard H. Hammar, Omar S. Dessouki, Brent D. Lowe, Mark T. Riefe, Jeremy W. Short, Andrew Schertzer
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Publication number: 20130256069Abstract: A brake assembly includes a brake pad, a bracket supporting the brake pad and having a first portion, a second portion spaced apart from the first portion, and a linkage interconnecting the first and second portions. The linkage is configured to transfer tensile loads between the first and second portion, but is characterized by the absence of any bending modes. The absence of bending modes prevents excitation of the linkage, thereby reducing sound generated during application of the brake assembly.Type: ApplicationFiled: May 24, 2013Publication date: October 3, 2013Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Brent D. Lowe, Mark T. Riefe, Omar S. Dessouki, Mohan Sundar, Chia N. Yang
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Patent number: 8469159Abstract: A brake assembly includes a brake pad, a bracket supporting the brake pad and having a first portion, a second portion spaced apart from the first portion, and a linkage interconnecting the first and second portions. The linkage is configured to transfer tensile loads between the first and second portion, but is characterized by the absence of any bending modes. The absence of bending modes prevents excitation of the linkage, thereby reducing sound generated during application of the brake assembly.Type: GrantFiled: June 7, 2010Date of Patent: June 25, 2013Assignee: GM Global Technology Operations LLCInventors: Brent D. Lowe, Mark T. Riefe, Omar S. Dessouki, Mohan Sundar, Chia N. Yang
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Patent number: 8163399Abstract: Various embodiments of the invention include products and parts including a frictional damping means and methods of making and using the same.Type: GrantFiled: February 5, 2008Date of Patent: April 24, 2012Assignee: GM Global Technology Operations LLCInventors: James G. Schroth, Michael D. Hanna, Richard H. Hammar, Omar S. Dessouki, Brent D. Lowe, Mark T. Riefe, Mohan Sundar
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Publication number: 20110297491Abstract: A brake assembly includes a brake pad, a bracket supporting the brake pad and having a first portion, a second portion spaced apart from the first portion, and a linkage interconnecting the first and second portions. The linkage is configured to transfer tensile loads between the first and second portion, but is characterized by the absence of any bending modes. The absence of bending modes prevents excitation of the linkage, thereby reducing sound generated during application of the brake assembly.Type: ApplicationFiled: June 7, 2010Publication date: December 8, 2011Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Brent D. Lowe, Mark T. Riefe, Omar S. Dessouki, Mohan Sundar, Chia N. Yang
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Publication number: 20110198169Abstract: The invention provides a method for manufacturing a friction damped disc brake rotor, including the steps of: (A) providing a ceramic coating on an insert, wherein the insert has a body with tabs extending therefrom to hold the insert in a desired position within a mold; (B) washing the ceramic coating off of the tabs; (C) positioning the insert into the mold; and (D) casting a rotor cheek of the disc brake rotor in the mold around the insert such that a portion of each tab is bonded with the rotor cheek, and such that the coating is substantially non-bonded with the rotor cheek so that the coating provides a proper interfacial boundary between the body and the cheek for damping, and the at least partial bonding of each tab with the rotor cheek prevents corrosion-causing exterior elements from reaching the interfacial boundary when the friction damped disc brake rotor is in use.Type: ApplicationFiled: April 26, 2011Publication date: August 18, 2011Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Michael D. Hanna, James G. Schroth, Richard H. Hammar, Omar S. Dessouki, Brent D. Lowe, Mark T. Riefe, Jeremy W. Short, Andrew Schertzer
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Patent number: 8000870Abstract: A brake system is provided for minimizing brake pulsation feedback caused by surface variations of a brake system corner component. The brake system includes at least one sensing device configured to measure a pressure pulse caused by the surface variation of a brake system corner component. A controller module is in communication with the at least one sensing device and a hydraulic brake circuit. The controller module is configured to receive an output from the at least one sensing device and to adjust line pressure in the hydraulic brake circuit to substantially minimize brake pulsation feedback.Type: GrantFiled: August 24, 2007Date of Patent: August 16, 2011Assignee: GM Global Technology Operations LLCInventors: Omar S. Dessouki, Brent D. Lowe, Mark T. Riefe
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Patent number: 7975750Abstract: A Coulomb friction damped disc brake rotor, wherein damping is provided Coulomb friction in generally coextensive relation with the braking surfaces of the one or more rotor cheeks. The Coulomb friction damped disc brake rotor has at least one interfacial boundary formed in at least one rotor cheek disposed in generally coextensive relation to the braking surface thereof. The interfacial boundary provides a mechanically distinguishable surface boundary between two surfaces which are in mutual contact such that a state of Coulomb friction exists therebetween.Type: GrantFiled: October 8, 2004Date of Patent: July 12, 2011Assignee: GM Global Technology Operations LLCInventors: Omar S. Dessouki, Brent D. Lowe, Mark T. Riefe, Matthew T. Doescher, Anil K. Sachdev, Mark W. Verbrugge, James G. Schroth, Michael D. Hanna
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Publication number: 20110127124Abstract: A Coulomb friction damped disc brake caliper bracket, wherein damping is provided by Coulomb friction, most preferably at the outboard tie-bar thereof, by a Coulomb bar peripherally welded thereto. An inner surface of the Coulomb friction bar is in abutting contact with the external surface of the tie-bar, whereby because of the continuous peripheral edge welding, corrosion cannot find entry into the interface of the two surfaces, yet the two surfaces form are free to vibrate one as to the other in Coulomb friction fashion to thereby provide damping and reduction of brake squeal and other noise.Type: ApplicationFiled: December 1, 2009Publication date: June 2, 2011Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Brent D. Lowe, Mark T. Riefe, Omar S. Dessouki, Mohan Sundar, Chia N. Yang
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Patent number: 7937819Abstract: The invention provides a method for manufacturing a friction damped disc brake rotor, including the steps of: (A) providing a ceramic coating on an insert, wherein the insert has a body with tabs extending therefrom to hold the insert in a desired position within a mold; (B) washing the ceramic coating off of the tabs; (C) positioning the insert into the mold; and (D) casting a rotor cheek of the disc brake rotor in the mold around the insert such that a portion of each tab is bonded with the rotor cheek, and such that the coating is substantially non-bonded with the rotor cheek so that the coating provides a proper interfacial boundary between the body and the cheek for damping, and the at least partial bonding of each tab with the rotor cheek prevents corrosion-causing exterior elements from reaching the interfacial boundary when the friction damped disc brake rotor is in use.Type: GrantFiled: June 27, 2006Date of Patent: May 10, 2011Assignee: GM Global Technology Operations LLCInventors: Michael D. Hanna, James G. Schroth, Richard H. Hammar, Omar S. Dessouki, Brent D. Lowe, Mark T. Riefe, Jeremy W. Short, Andrew Schertzer
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Patent number: 7775332Abstract: The invention provides a method for manufacturing a friction damped disc brake rotor, including the steps of: (A) positioning at least one insert into a mold, wherein the insert has a body with tabs extending therefrom to hold the insert in a desired position within the mold; and (B) casting a rotor cheek of the disc brake rotor in the mold around the insert such that a portion of each tab is bonded with the rotor cheek and the body is substantially non-bonded with the rotor cheek so that the body provides a proper interfacial boundary with the cheek for damping while the bonding of the tabs with the rotor cheek prevents corrosion-causing exterior elements from reaching the interfacial boundary.Type: GrantFiled: May 25, 2006Date of Patent: August 17, 2010Assignee: GM Global Technology Operations, Inc.Inventors: Michael D. Hanna, James G. Schroth, Omar S. Dessouki
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Publication number: 20100018819Abstract: A friction damped brake drum for reducing vibrations in a brake drum.Type: ApplicationFiled: July 24, 2008Publication date: January 28, 2010Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Omar S. Dessouki, Brent D. Lowe, Mark T. Riefe, Patrick J. Monsere, Mohan Sandar
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Patent number: 7644750Abstract: The invention provides a method for manufacturing a powertrain component enclosure member, including the steps of: (A) positioning at least one insert into a mold, wherein the insert is provided with a coating to prevent bonding between the insert and the casting material; and (B) casting a wall of the powertrain component enclosure member in the mold around the insert such that a major portion of the insert is substantially non-bonded with the casting material to provide a proper interfacial boundary with the casting material for damping.Type: GrantFiled: June 27, 2006Date of Patent: January 12, 2010Assignee: GM Global Technology Operations, Inc.Inventors: James G. Schroth, Michael D. Hanna, Richard H. Hammar, Omar S. Dessouki, Brent D. Lowe, Mark T. Riefe, Jeremy W. Short, Mark W. Verbrugge
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Patent number: 7604098Abstract: A Coulomb friction damped disc brake caliper bracket, wherein damping is provided by Coulomb friction, most preferably at the outboard tie-bar thereof. In one form, at least one clamping member applies compressive force externally to the caliper bracket, and in a second form, at least one interfacial boundary is internally disposed in the caliper bracket. Provided thereby is a mechanically distinguishable surface boundary between two surfaces which are in mutual contact such that a state of Coulomb friction exists therebetween.Type: GrantFiled: August 1, 2005Date of Patent: October 20, 2009Assignee: GM Global Technology Operations, Inc.Inventors: Omar S. Dessouki, Brent D. Lowe, Mark T. Riefe, Matthew T. Doescher, James J. Yuhas
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Publication number: 20090240414Abstract: A method of brake noise suppression via brake system pressure modulation is disclosed that includes detecting a brake apply and modulating a brake system pressure to disrupt formation of a friction instability upon detection of the brake apply. The brake system pressure can be modulated at each brake apply detected, only when the brake apply detected is of a brake apply type that is indicative of brake noise, or when the system actually detects brake noise. Further, the system can determine whether a brake apply is associated with a noise-inducing friction instability; and modulate the brake system pressure to disrupt formation of the noise-inducting friction instability by hindering development of the limit cycle associated with the noise-inducing friction instability.Type: ApplicationFiled: March 20, 2008Publication date: September 24, 2009Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Omar S. Dessouki, Brent D. Lowe, Mark T. Riefe
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Publication number: 20090071779Abstract: One embodiment of the invention may include a product including a body portion including a first face and a frictional damping insert overlying the first face of the body portion. The body portion may include a second face overlying the insert. The insert may have a throughhole and a portion of the body portion may extend from the first face through the throughhole and the insert to the second face of the body portion.Type: ApplicationFiled: July 16, 2008Publication date: March 19, 2009Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Brent D. Lowe, Mark T. Riefe, Omar S. Dessouki, Mohan Sundar, Kevin M. Thompson
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Publication number: 20090055065Abstract: A brake system is provided for minimizing brake pulsation feedback caused by surface variations of a brake system corner component. The brake system includes at least one sensing device configured to measure a pressure pulse caused by the surface variation of a brake system corner component. A controller module is in communication with the at least one sensing device and a hydraulic brake circuit. The controller module is configured to receive an output from the at least one sensing device and to adjust line pressure in the hydraulic brake circuit to substantially minimize brake pulsation feedback.Type: ApplicationFiled: August 24, 2007Publication date: February 26, 2009Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Omar S. Dessouki, Brent D. Lowe, Mark T. Riefe