Invention Grant
- Patent Title: Split torque geared power transmissions with composite output shafts
- Patent Title (中): 具有复合输出轴的分体扭矩齿轮传动
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Application No.: US11835841Application Date: 2007-08-08
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Publication No.: US07896287B2Publication Date: 2011-03-01
- Inventor: Stepan V. Lunin
- Applicant: Stepan V. Lunin
- Applicant Address: US IL Chicago
- Assignee: The Boeing Company
- Current Assignee: The Boeing Company
- Current Assignee Address: US IL Chicago
- Agency: Haynes and Boone, LLP
- Main IPC: B64D35/00
- IPC: B64D35/00 ; F16H37/06

Abstract:
A light weight, split torque, geared power transmission having a reduced number of gears and useful for, e.g., transmitting power from an engine to the main rotor of a rotorcraft, includes a ring gear having a pair of oppositely facing angular bevel gears respectively formed on opposite sides of a medial plane thereof, and a first pinion having an elongated drive shaft extending through the medial plane of the ring gear and disposed at an oblique angle relative thereto. The first pinion includes a pair of cylindrical gears mounted coaxially on the drive shaft and respectively disposed in conjugate meshing engagement with respective ones of the bevel gears of the ring gear. An elongated annular output shaft made of a strong, light weight composite material is coupled to a circumferential periphery of the ring gear.
Public/Granted literature
- US20090038435A1 SPLIT TORQUE GEARED POWER TRANSMISSIONS WITH COMPOSITE OUTPUT SHAFTS Public/Granted day:2009-02-12
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