Patent 5664534 Issued on September 9, 1997. Estimated Expiration Date: May 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.
A flywheel system for a machine includes a rotary body affixed to a rotary shaft of the machine for rotating with the shaft as a unit; an additional rotary body forming a flywheel mass and being mounted on the shaft for rotation relative thereto; an electromagnetic device for torque-transmittingly coupling the rotary bodies to one another in a contactless manner; and a control for actuating the electromagnetic device.