Gm Global Technolgoy Operations, Inc.

Omar S Dessouki

Mark T Riefe

Brent D Lowe

James Gregory Schroth

Michael D Hanna

Mohan Sundar

Richard Harry Hammar

Jeremy W Short

Mark William Verbrugge

Andrew Schertzer

Chia N Yang

Matthew T Doescher

Anil Kumar Sachdev

Patrick J Monsere

Kevin M Thompson

James J Yuhas

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.

Damped part with insert

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.

Brake assembly

A friction damped brake drum for reducing vibrations in a brake drum.

Friction damped brake drum

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.

Bi-metal disc brake rotor and method of manufacturing

Various embodiments of the invention include products and parts including a frictional damping means and methods of making and using the same.

Damped products and methods of making and using the same

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.

Active brake pulsation control

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.

Coulomb friction damped disc brake rotors

Method of manufacturing a friction damped disc brake rotor

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.

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.

Method of casting components with inserts for noise reduction

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.

Growing community of inventors

Beverly Hills, MI, United States of America

Omar S Dessouki