Planetary gear transmission systems or components – Differential planetary gearing – Worm drive on input shaft
Patent
1997-02-10
2000-06-13
Ta, Khoi Q.
Planetary gear transmission systems or components
Differential planetary gearing
Worm drive on input shaft
475230, 74425, F16H 116, H02K 2400
Patent
active
060743220
ABSTRACT:
A new type of apparatus for transmitting rotation utilizing an oscillating input utilizes a self-locking worm (1) and worm gear (3) combination with different types of means for rotating said worm about its axis of rotation relative to said worm gear described. An input to the worm gear (3) is transmitted without relative movement to the thread of the worm (1) to cause the thread and hence the rotor to rotate about an axis of the worm gear. The means preferably rotates the worm thread relative to the worm gear teeth under certain conditions when it is not desired to transmit rotation. A system for transmitting an oscillating input (4) to a single directional output (5) incorporates some of the worm and worm gear combinations with spider or bevel differentials.
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"Standard Handbook of Machine Design", by Joseph Shigley and Charles Mischke, 36-8-1, McGrawHill, 1992.
Design of Industrial Double-Enveloping Wormgears (ANSI/AGMA-6030-C87).
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