Adjustable magneto-rheological fluid device
Patent 5956951 Issued on September 28, 1999. Estimated Expiration Date: 
September 20, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
September 20, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2667237 2846028 2973969 3006656 3059915 3321210 3599428 Magnetic viscous damper Feedback control type shock absorbing suspension system Flexible column viscous spring damper InventorAssigneeApplicationNo. 718199 filed on 09/20/1996US Classes:60/326, Utilizing a mixture, suspension, semisolid or electro-conductive liquid as motive fluid91/4A, With float mechanism188/267.1, Electroviscous or electrorheological fluid188/267.2Magnetic fluid or material (e.g., powder)ExaminersPrimary: Lopez, F. DanielAttorney, Agent or FirmForeign Patent References
International ClassF16D 037/02AbstractAn adjustable magneto-rheological fluid device includes a movable piston adjacent a first chamber containing a first hydraulic fluid for moving the piston. The first hydraulic fluid interacts with a flexible magneto-rheological compartment containing a magneto-rheological fluid that flows between a first magneto-rheological fluid chamber and a second magneto-rheological fluid chamber. By controlling the flow of the magneto-rheological fluid, the device controls the first hydraulic fluid in the first chamber to bias the piston in a first direction. Additionally, the magneto-rheological fluid device may include a second chamber, containing a second hydraulic fluid, spaced apart from the first chamber on the opposite side of the piston. The second hydraulic fluid interacts with the flexible magneto-rheological compartment allowing the device to control the second hydraulic fluid to bias the piston in a second direction opposite the first direction. | |
