Faramarz Gordaninejad - Reno NV Shawn P. Kelso - Fremont CA
Assignee:
Board of Regents of the University and Community College System on Behalf of the University of Nevada-Reno, The University of Reno - Reno NV
International Classification:
F16F 953
US Classification:
1882671, 18832219, 18832222
Abstract:
A magneto-rheological fluid device including a housing defining a cavity, a piston slidably disposed in the cavity to divide the cavity into first and second portions, a passage defined on an exterior surface of the piston fluidly coupling the first and second portions of the cavity, a magneto-rheological fluid disposed in the cavity such that motion of the piston is damped by flow of the magneto-rheological fluid through the passage and a magnet disposed to produce a magnetic field within the cavity substantially parallel to the motion of the piston at the exterior surface of the piston.
Faramarz Gordaninejad - Reno NV Everet O. Ericksen - Newport MI
Assignee:
The Board of Regents of the University and Community College System of Nevada - Reno NV
International Classification:
F16F 953
US Classification:
1882672, 188320, 26714014
Abstract:
A damper includes a housing, a piston, and a magneto-rheological (MR) fluid. The piston is movably disposed within the housing such that the piston divides an interior of the housing into first and second cavities and a passage defined in the piston couples the first and second cavities. The passage includes at least a disk shape space within the piston defined between by two substantially parallel surfaces. The MR fluid damps motion of the piston by a flow of MR fluid through the passage, and a magnet produces a magnetic field within at least the disk shape space of the passage.
Alan Fuchs - Reno NV Faramarz Gordaninejad - Reno NV Daniel Blattman - Reno NV Gustav H. Hamann - Reno NV
Assignee:
The Board of Regents of the University and Community College System of Nevada - Reno NV
International Classification:
H01R 144
US Classification:
252 6254, 252 6253, 252 6252
Abstract:
Magnetorheological materials are provided comprising magnetic particles, a polymeric gel and a carrier material. The polymerization of the gel is preferentially accomplished in the presence of the magnetic particles and the carrier material. Magnetorheological materials are provided having a selected off-state viscosity and a selected on-state apparent viscosity. The method of preparing these magnetorheological materials is also provided. The carrier material, the polymeric gel and the magnetic particles are selected so that the resulting magnetorheological material has the desired off-state viscosity and on-state apparent viscosity. These materials have good dispersion characteristics, reduced settling, superior off-state viscosity and superior apparent viscosity in the presence of a magnetic field.
The Board of Regents of the University and Community College System of Nevada on Behalf of the University of Nevada - Reno NV
International Classification:
F15C 104
US Classification:
137827, 1372511, 137909
Abstract:
The disclosure describes a magnetorheological fluid control valve. The magnetorheological fluid control valve comprises an electromagnetic coil having a first end and a second end. A first arm is magnetically coupled to the first end of the electromagnetic coil. A second arm is magnetically coupled to the second end of the electromagnetic coil. The second arm has a passage. A ferromagnetic rod having a diameter less than that of the passage is disposed in the passage and magnetically coupled to the first and second arms. A first manifold is coupled to the second arm at one end of the passage. A second manifold is coupled between the second arm and the first arm at an end of the passage opposite the first manifold. A magnetorheological fluid is disposed in the passage.
Magneto-Rheological Fluid Encased In Flexible Materials For Vibration Control
Faramarz Gordaninejad - Reno NV, US Alan Fuchs - Reno NV, US Xiaojie Wang - Reno NV, US Gregory Henry Hitchcock - Reno NV, US Mei Xin - Reno NV, US
Assignee:
The Board of Regents of the University and Community College System of Nevada, on behalf of the University of Nevada, Reno - Reno NV
International Classification:
F16F009/53
US Classification:
1882672, 1882681
Abstract:
The disclosed device is directed toward magneto-rheological fluid encasement device. The magneto-rheological fluid encasement device comprises a body having at least one containment element defining an interior and an exterior. A magneto-rheological fluid is disposed in the interior of the at least one containment element. At least one magnetic field is in operative communication with the magneto-rheological fluid.
Gregory H. Hitchcock - Reno NV, US Faramarz Gordaninejad - Reno NV, US Alan Fuchs - Reno NV, US
Assignee:
The Board of Regents of the University and Community College System of Nevada on behalf of the University of Nevada, Reno - Reno NV
International Classification:
F16F 15/03
US Classification:
1882672, 26714013
Abstract:
A tunable vibration isolation device comprising a magneto-rheological elastomer (MRE), and methods of using such a device, are provided. By manipulating a magnetic field within the MRE the device's stiffness is controlled. The vibration isolator can be constructed to provide shock absorption in one, two and three dimensions. Coupling the tunable device to a sensor feedback and a control system provides fast and accurate vibration isolation and energy dissipation for shock events in a variety of applications.
Alan Fuchs - Reno NV, US Faramarz Gordaninejad - Reno NV, US Hatice Gecol - Reno NV, US Ben Hu - Reno NV, US Beril Kavlicoglu - Reno NV, US
Assignee:
The Board of Regents of the University and Community College System of Nevada - Reno NV
International Classification:
H01F 1/44
US Classification:
252 6254, 252 6252
Abstract:
Magnetorheological materials having a supramolecular polymer gel as a component of the carrier are disclosed. Useful supramolecular polymers for gels include those having terpyridine ligands which can participate in metal coordination bonding. The magnetizable particles of magnetorheological materials can have supramolecular surfactant-polymer coatings.
Controllable Magneto-Rheological Fluid Devices For Motion-Damping
Faramarz Gordaninejad - Reno NV, US Xiaojie Wang - Reno NV, US Gregory Hitchcock - Reno NV, US Barkan M. Kavlicoglu - Reno NV, US
Assignee:
University of Nevada - Reno NV
International Classification:
F16F 9/53
US Classification:
1882672, 188267
Abstract:
Variably controllable motion-damping devices are disclosed that utilize a magneto-rheological fluid (MRF). One configuration of such a device includes a first valving region and a second valving region connected to the first valving region. Between the first and second valving regions is a plate having a first surface adjacent the first valving region and a second surface adjacent the second valving region. At least one of the first and second surfaces is treated to impart a significantly increased shear yield stress to columnized MRF particles passing over the surface, compared to an otherwise similar untreated surface. An MRF is contained in the first and second valving regions such that the MRF can flow through the first and second valving regions. Motion of a first object relative to a second object is damped by causing flow of MRF through the first and second valving regions. A magnet produces a magnetic field within at least one of the valving regions.
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