Deflection compensating gear system with radially displaceable ring gear
Patent 4674350 Issued on June 23, 1987. Estimated Expiration Date: 
May 20, 2005. 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.
May 20, 2005. 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 ReferencesInventorsApplicationNo. 06/735975 filed on 05/20/1985US Classes:74/438, External and internal teeth74/402, Automatic control74/410, Pressure distributing74/411Yieldability in gear trainsExaminersPrimary: Staab, Lawrence J.Attorney, Agent or FirmInternational ClassesF16D 3/18 (20060101)F16D 3/16 (20060101) F16H 55/17 (20060101) F16H 1/02 (20060101) F16H 1/26 (20060101) Foreign Application Priority Data1984-05-23 DEAbstractA gear system includes a housing and an intermediate ring gear movably carried on a support hub coupled to an output shaft. The ring gear is driven by an input pinion gear through a running tooth system and drives the support hub through a coupling tooth system. Misalignment of the gearings due to housing, shaft or support deflections under load are compensated by providing an arcuate axial tooth profile and radial clearance in the coupling tooth system. The coupling tooth system includes lubricant confined between a pair of sealing discs. In an alternate embodiment, the ring gear is carried on spherically configured rings of the support and the ring gear includes mating spherically configured rings with suitable clearance between the spherical surfaces. Engagement between the mating spherical surfaces generates the radial force required for adjustment of the ring gear while maintaining radial tooth clearance within the coupling tooth system. As a result, the coupling tooth system transmits torque forces exclusively.Other References
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