Patents by Inventor Mark Golden
Mark Golden 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).
-
Publication number: 20090260932Abstract: A component defines at least one chamber that is confined by the component. The chamber has an inner surface. A filler material is disposed inside the chamber. Relative movement between the inner surface and the filler material helps dampen vibrations and other oscillations if and when the component is vibrated.Type: ApplicationFiled: April 18, 2008Publication date: October 22, 2009Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Michael D. Hanna, Mark A. Golden, John C. Ulicny
-
Patent number: 7521002Abstract: A magnetorheological fluid composition comprising a low aspect ratio magnetizable particle comprising a unimodal particle distribution and an aspect ratio less than 1.5, a high aspect ratio magnetizable particle comprising an aspect ratio greater than 1.5, and a carrier fluid.Type: GrantFiled: August 11, 2005Date of Patent: April 21, 2009Assignee: GM Global Technology Operations, Inc.Inventors: Yang-Tse Cheng, John C. Ulicny, Mark A. Golden, Keith S. Snavely
-
Publication number: 20090032353Abstract: An apparatus is provided having an active material forming a surface thereof in contact with a rheological fluid. The active material is controllable to vary a surface geometry thereof between a rough or nonsmooth surface geometry to increase drag, and achieve an increase in stress transmitted through the fluid, when a field is applied, while allowing a smooth surface geometry and an associated reduction in stress transmitted through the fluid when the field is removed. A method of enhancing performance of an apparatus that includes a rdeological fluid is also provided.Type: ApplicationFiled: August 3, 2007Publication date: February 5, 2009Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Mark A. Golden, John C. Ulicny, Yang T. Cheng
-
Patent number: 7430788Abstract: A releasable fastener system comprises a loop portion and a hook portion. The loop portion includes a support and a loop material disposed on one side thereof whereas the hook portion includes a support and a plurality of closely spaced upstanding hook elements extending from one side thereof. When the hook portion and loop portion are pressed together they interlock to form a releasable engagement. The resulting joint created by the engagement is relatively resistant to shear and pull forces and weak in peel strength forces. The hook elements are formed of a magnetorheological elastomer that provides a change in shape orientation and/or flexural modulus of the hook elements. In this manner, the shape orientation and/or flexural modulus of the hook elements can be remotely changed to provide a reduction or magnification in the shear and/or pull-off forces in addition to providing variable damping capabilities to the fastener system.Type: GrantFiled: March 30, 2006Date of Patent: October 7, 2008Assignee: General Motors CorporationInventors: Robert A. Ottaviani, John C. Ulicny, Mark A. Golden
-
Patent number: 7419616Abstract: A magnetorheological fluid composition comprising a carrier fluid; and a plurality of high aspect ratio magnetizable particles, wherein the aspect ratio of the high aspect ratio magnetizable particles is greater than 1.5. Optionally, the high aspect ratio magnetizable particles can have interlocking structures comprising male component and a female component. Still further, a magnetorheological fluid composition can comprise low aspect ratio magnetizable particles having the interlocking structures, wherein the aspect ratio of the low aspect ratio magnetizable particles is 1 to 1.5.Type: GrantFiled: August 11, 2005Date of Patent: September 2, 2008Assignee: GM Global Technology Operations, Inc.Inventors: John C. Ulicny, Yang-Tse Cheng, Mark A. Golden, Keith S. Snavely
-
Publication number: 20080185554Abstract: Magnetizable particles treated with a silane precursor comprising a hydrophobic group.Type: ApplicationFiled: January 9, 2008Publication date: August 7, 2008Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: John C. Ulicny, Tao Xie, Mark A. Golden, Andrew M. Mance, Keith S. Snavely
-
Patent number: 7393463Abstract: A magnetorheological fluid composition comprising magnetizable particles in a liquid metal carrier fluid, wherein the liquid metal carrier fluid comprises a metal, a metal alloy, or a solder composition having a melting point from about ?40° C. to about 300° C., a boiling point greater than 300° C., and a viscosity greater than about 0.1 centipoise (cp) at the melting point of the liquid based metal carrier fluid. The magnetizable particles can comprise low aspect ratio magnetizable particles, high aspect magnetizable particles, or a combination thereof. Also disclosed herein are high temperature magnetorheological devices operating at temperatures greater than 100° C., and comprising the magnetorheological fluid composition.Type: GrantFiled: September 16, 2005Date of Patent: July 1, 2008Assignee: GM Global Technology Operations, Inc.Inventors: John C. Ulicny, Mark A. Golden
-
Patent number: 7354528Abstract: A magnetorheological fluid composition comprising a low aspect ratio magnetizable particle comprising a unimodal particle distribution and an aspect ratio less than 1.5, a high aspect ratio magnetizable particle comprising an aspect ratio greater than 1.5, and a carrier fluid.Type: GrantFiled: September 22, 2005Date of Patent: April 8, 2008Assignee: GM Global Technology Operations, Inc.Inventors: Yang-Tse Cheng, John C. Ulicny, Thomas A. Perry, Mark A. Golden
-
Patent number: 7334670Abstract: A magnetorheological (MR) fluid coupling for vectoring torque with respect to a shaft capable of rotary motion is disclosed. The coupling includes a stator, a rotor having a rotational degree of freedom with respect to the stator and configured for physical communication with the shaft, and a magnetic field generator. The stator and rotor define an annular space therebetween and are coupled via a MR fluid disposed within the annular space. The magnetic field generator is in field communication with the MR fluid and is disposed to produce a substantially radially directed magnetic field across the annular space. The rotor is rotationally responsive to the application of a magnetic field at the MR fluid.Type: GrantFiled: April 22, 2005Date of Patent: February 26, 2008Assignee: GM Global Technology Operations, Inc.Inventors: Chandra S. Namuduri, Balarama V. Murty, Anthony L. Smith, Jie Tong, Mark A. Golden, John C. Ulicny
-
Patent number: 7306083Abstract: A device employing a magneto rheological (MR) fluid in combination with a stator and a rotor is disclosed, where the stator includes a magnetic field generator. The rotor has a rotational axis and a rotational degree of freedom with respect to the stator. The stator and rotor define an annular space therebetween and are coupled via the MR fluid disposed within the annular space, and the magnetic field generator is in field communication with the MR fluid at the annular space. The device includes a means for promoting the formation of stationary stripes of MR fluid within the annular space in response to rotation of the rotor.Type: GrantFiled: July 27, 2005Date of Patent: December 11, 2007Assignees: GM Global Technology Operations, Inc., Wisconsin Alumni Research FoundationInventors: John C. Ulicny, Daniel J. Klingenberg, Anthony L. Smith, Mark A. Golden
-
Patent number: 7303679Abstract: A method of recovering spilled hydrocarbon fluids from a body of water utilizing the increased oleophilic properties of reacted iron particles suspended in a magnetorheological (MR) fluid. The iron particles normally used to create MR fluids, are reacted with an organic compound containing an oleophilic chain end which attaches to the surface of the iron, prior to suspension in a liquid vehicle such as an organic oil. The reacted iron particles in the MR fluid are then applied to and mixed with a hydrocarbon spill on a body of water such as an oil spill, whereby subsequent exposure to a significant magnetic field provides for subsequent recovery of both the reacted magnetic particles and the hydrocarbon spill.Type: GrantFiled: December 10, 2004Date of Patent: December 4, 2007Assignee: General Motors CorporationInventors: John C Ulicny, Mark A Golden
-
Publication number: 20070063167Abstract: A magnetorheological fluid composition comprising a low aspect ratio magnetizable particle comprising a unimodal particle distribution and an aspect ratio less than 1.5, a high aspect ratio magnetizable particle comprising an aspect ratio greater than 1.5, and a carrier fluid.Type: ApplicationFiled: September 22, 2005Publication date: March 22, 2007Inventors: Yang-Tse Cheng, John Ulicny, Thomas Perry, Mark Golden
-
Publication number: 20070063166Abstract: A magnetorheological fluid composition comprising magnetizable particles in a liquid metal carrier fluid, wherein the liquid metal carrier fluid comprises a metal, a metal alloy, or a solder composition having a melting point from about ?40° C. to about 300° C., a boiling point greater than 300° C., and a viscosity greater than about 0.1 centipoise (cp) at the melting point of the liquid based metal carrier fluid. The magnetizable particles can comprise low aspect ratio magnetizable particles, high aspect magnetizable particles, or a combination thereof. Also disclosed herein are high temperature magnetorheological devices operating at temperatures greater than 100° C., and comprising the magnetorheological fluid composition.Type: ApplicationFiled: September 16, 2005Publication date: March 22, 2007Inventors: John Ulicny, Mark Golden
-
Publication number: 20070023247Abstract: A device employing a magnetorheological (MR) fluid in combination with a stator and a rotor is disclosed, where the stator includes a magnetic field generator. The rotor has a rotational axis and a rotational degree of freedom with respect to the stator. The stator and rotor define an annular space therebetween and are coupled via the MR fluid disposed within the annular space, and the magnetic field generator is in field communication with the MR fluid at the annular space. The device includes a means for promoting the formation of stationary stripes of MR fluid within the annular space in response to rotation of the rotor.Type: ApplicationFiled: July 27, 2005Publication date: February 1, 2007Inventors: John Ulicny, Daniel Klingenberg, Anthony Smith, Mark Golden
-
Publication number: 20060168780Abstract: A releasable fastener system comprises a loop portion and a hook portion. The loop portion includes a support and a loop material disposed on one side thereof whereas the hook portion includes a support and a plurality of closely spaced upstanding hook elements extending from one side thereof. When the hook portion and loop portion are pressed together they interlock to form a releasable engagement. The resulting joint created by the engagement is relatively resistant to shear and pull forces and weak in peel strength forces. The hook elements are formed of a magnetorheological elastomer that provides a change in shape orientation and/or flexural modulus of the hook elements. In this manner, the shape orientation and/or flexural modulus of the hook elements can be remotely changed to provide a reduction or magnification in the shear and/or pull-off forces in addition to providing variable damping capabilities to the fastener system.Type: ApplicationFiled: March 30, 2006Publication date: August 3, 2006Inventors: Robert Ottaviani, John Ulicny, Mark Golden
-
Patent number: 7020938Abstract: A releasable fastener system comprises a loop portion and a hook portion. The loop portion includes a support and a loop material disposed on one side thereof whereas the hook portion includes a support and a plurality of closely spaced upstanding hook elements extending from one side thereof. When the hook portion and loop portion are pressed together they interlock to form a releasable engagement. The resulting joint created by the engagement is relatively resistant to shear and pull forces and weak in peel strength forces. The hook elements are formed of a magnetorheological elastomer that provides a change in shape orientation and/or flexural modulus of the hook elements. In this manner, the shape orientation and/or flexural modulus of the hook elements can be remotely changed to provide a reduction or magnification in the shear and/or pull-off forces in addition to providing variable damping capabilities to the fastener system.Type: GrantFiled: April 15, 2004Date of Patent: April 4, 2006Assignee: General Motors CorporationInventors: Robert A. Ottaviani, John C. Ulicny, Mark A. Golden
-
Patent number: 7013536Abstract: A releasable fastener system comprises a loop portion and a hook portion. The loop portion includes a support and a loop material disposed on one side thereof. The hook portion generally includes a support and a plurality of closely spaced upstanding hook elements extending from one side thereof. A selected one of the hook elements or the loop material is formed from a thermally and/or electrically conductive material. The other one is formed of a material adapted to melt, flow or volatize at a defined temperature. When the hook portion and loop portion are pressed together they interlock to form a releasable engagement. The resulting joint created by the engagement is relatively resistant to shear and pull forces and weak in peel strength forces. Introducing an activation signal to the thermally and/or electrically conductive hook elements or loop material, causes the opposing material to melt, flow, soften, or volatize upon contact therewith.Type: GrantFiled: April 8, 2003Date of Patent: March 21, 2006Assignee: General Motors CorporationInventors: Mark A. Golden, John C. Ulicny, Alan Lampe Browne, Nancy L. Johnson, William Barvosa-Carter, Thomas B. Stanford, Leslie A. Momoda
-
Publication number: 20060052198Abstract: A magnetorheological (MR) fluid coupling for vectoring torque with respect to a shaft capable of rotary motion is disclosed. The coupling includes a stator, a rotor having a rotational degree of freedom with respect to the stator and configured for physical communication with the shaft, and a magnetic field generator. The stator and rotor define an annular space therebetween and are coupled via a MR fluid disposed within the annular space. The magnetic field generator is in field communication with the MR fluid and is disposed to produce a substantially radially directed magnetic field across the annular space. The rotor is rotationally responsive to the application of a magnetic field at the MR fluid.Type: ApplicationFiled: April 22, 2005Publication date: March 9, 2006Inventors: Chandra Namuduri, Balarama Murty, Anthony Smith, Jie Tong, Mark Golden, John Ulicny
-
Publication number: 20060033069Abstract: A magnetorheological fluid composition comprising a carrier fluid; and a plurality of high aspect ratio magnetizable particles, wherein the aspect ratio of the high aspect ratio magnetizable particles is greater than 1.5. Optionally, the high aspect ratio magnetizable particles can have interlocking structures comprising male component and a female component. Still further, a magnetorheological fluid composition can comprise low aspect ratio magnetizable particles having the interlocking structures, wherein the aspect ratio of the low aspect ratio magnetizable particles is 1 to 1.5.Type: ApplicationFiled: August 11, 2005Publication date: February 16, 2006Inventors: John Ulicny, Yang-Tse Cheng, Mark Golden, Keith Snavely
-
Publication number: 20060033068Abstract: A magnetorheological fluid composition comprising a low aspect ratio magnetizable particle comprising a unimodal particle distribution and an aspect ratio less than 1.5, a high aspect ratio magnetizable particle comprising an aspect ratio greater than 1.5, and a carrier fluid.Type: ApplicationFiled: August 11, 2005Publication date: February 16, 2006Inventors: Yang-Tse Cheng, John Ulicny, Mark Golden, Keith Snavely