Planetary gear transmission systems or components – Planet pinion engages flexible belt or chain
Patent
1990-10-19
1991-12-24
Braun, Leslie A.
Planetary gear transmission systems or components
Planet pinion engages flexible belt or chain
475330, F16H 706
Patent
active
050748297
ABSTRACT:
A combination chain and gear reducing device which includes a housing, an input drive system characterized by an input shaft having one end projecting from one end of the housing and the opposite end rotatably terminating in one end of an output shaft, a spur and pinion gear mounted on the input shaft, a pair of spur gears in oppositely-disposed relationship on the spur and pinion gear and carrying corresponding auxiliary spur gears, a disc rotatably mounted on the output shaft and receiving the spur gears and auxiliary spur gears, and an output shaft spur gear keyed to the output shaft and rotatably engaging each of the auxiliary spur gears. The spur gears and auxiliary spur gears are rotatably seated in pairs on separate spur gear shafts which are press-fitted in spaced relationship along a first diameter of the disc. An output drive system is located in the housing on the opposite side of the disc from the input drive system and includes an output shaft sprocket keyed to the output shaft and connected by means of a leaf chain to a pair of double sprockets rotatably secured to the disc along a second diameter which is ninety degrees disposed from the first diameter. Another leaf chain extends from the double sprockets to a fixed sprocket which is bolt to the housing. Driving of the disc and the output shaft by operation of the input and output drive systems creates a high torque, low speed mechanical advantage at the output shaft.
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Braun Leslie A.
Harrison John M.
Stavish Mattew
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