Planetary gear transmission systems or components – Planet periphery surrounds axis of interacting gear – Means to change speed ratio between input and output
Patent
1990-06-11
1991-09-10
Braun, Leslie A.
Planetary gear transmission systems or components
Planet periphery surrounds axis of interacting gear
Means to change speed ratio between input and output
475162, 475166, 74887, F16H 128, F16H 132
Patent
active
050469959
ABSTRACT:
This invention is a steplessly variable power transmission, comprising: an input driven planet gear, having axially disposed teeth, confined to reciprocate in straight diametrical channels in a output driving ring gear. When the teeth also move on a straight line as related to the housing, no rotary drive can be placed on the output ring gear, and the transmission is in a neutral mode. But, when the teeth are forced to curve, as related to the housing, the output gear must rotate accordingly. For example: if the input driven teeth veer away one degree, from a straight line, while the input rotates a full 360 degree rotation, then the input-output ratio is 360 to 1 underdrive. When the teeth path is a circle, the ratio is 1 to 1, but, the extreme lows, allow built-in overdrive gearing. The preferred embodiment has a stepless range from neutral to 3 to 1 overdrive. There are numerous methods to curve the path of the input driven teeth. This application discloses two basic methods and the preferred embodiment uses a combination of the two methods.
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Braun Leslie A.
Ta Khoi Q.
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