Magnetorheological fluid devices
Patent 5398917 Issued on March 21, 1995. Estimated Expiration Date: 
February 7, 2014. 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.
February 7, 2014. 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 2940749 3174587 Apparatus using a fluid whose viscosity varies with electric current applied thereto Mounting arrangement for automotive engine Vibration damping device Patent #: 5180145 InventorsAssigneeApplicationNo. 192838 filed on 02/07/1994US Classes:267/140.14, With electronic or magnetic control188/267.2, Magnetic fluid or material (e.g., powder)267/140.15With electronic or magnetic controlExaminersPrimary: Oberleitner, Robert J.Assistant: Schwartz, Christopher P. Attorney, Agent or FirmForeign Patent References
International ClassF16F 006/00AbstractA sealless magnetorheological fluid device is disclosed in the form of an engine mount which comprises a baffle plate (58) and a solenoid type coil (40) wrapped within a housing (20). The baffle plate diverts the flow of fluid into a more intimate contact with the coil to influence the characteristics of the fluid. The mount also comprises a first chamber (94), an elastomeric element 90 bonded to an attachment collar (88) and housing (20). An elastomeric bladder (95) is bonded to a lower surface of the housing to define a second chamber (96). Orifices (98) in housing (92) operate with coil (40) to define a valve for controlling the flow of the MR fluid. | |
