Braking system for exercise apparatus
Patent 4927136 Issued on May 22, 1990. Estimated Expiration Date: 
January 6, 2009. 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.
January 6, 2009. 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 ReferencesInventorAssigneeApplicationNo. 294478 filed on 01/06/1989US Classes:482/52, Stair climbing198/323, By means responsive to an unsafe operating characteristic of the system482/6, Regulates rate of movement482/901, HAVING COMPUTER CIRCUITRY482/903UTILIZING ELECTROMAGNETIC FORCE RESISTANCEExaminersPrimary: Apley, Richard J.Assistant: Chen, Jose V. Attorney, Agent or FirmForeign Patent References
International ClassA63B 023/06AbstractAn electromechanical and more particularly an electromagnetic brake is utilized in the control of exercise equipment including escalator type stair-climbing apparatus, in which electronically controllable torque, including a clamping torque, is applied to a rotary shaft to load the exercise equipment, thereby giving complete electronic control to the operation of the exercise apparatus including a safety locking function.Other References
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