Method and apparatus for optically measuring drive train backlash
Patent 6255645 Issued on July 3, 2001. Estimated Expiration Date: 
June 4, 2019. 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.
June 4, 2019. 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 ReferencesMethod and a device for setting backlash between gears in a gear train Calibration system for an imaging apparatus and method Patent #: 6194697 InventorsApplicationNo. 326790 filed on 06/04/1999US Classes:250/231.13, Shaft angle transducers74/409, Backlash take-up250/231.15With plural gear driven discsExaminersPrimary: Lee, John D.Assistant: Pyo, Kevin International ClassesG01D 005/26F16H 055/18 AbstractMethods and apparatus for quantifying the amount of backlash in drive trains. Using two optical transducers techniques are disclosed that lend themselves to self diagnosis of backlash in drive train systems. The techniques are useful in autochanger drive systems, but are also applicable to all systems involving the driven motion of devices.Field of SearchShaft angle transducersIncremental shaft readers; i.e., with means to generate increments of angular shaft rotation With plural gear driven discs Position indicating shaft encoders with means to generate a unique signal for each specific angular shaft position Optical or pre-photocell system Plural photosensitive image detecting element arrays Backlash take-up Backlash take-up | |
