Machine element or mechanism – Gearing
Patent
1983-03-31
1986-05-27
Staab, Lawrence J.
Machine element or mechanism
Gearing
74467, F16H 3704, F16H 5704
Patent
active
045908206
ABSTRACT:
An apparatus as described for transmitting rotational energy from a prime mover having a first shaft to a torque load driven by a second shaft through a spur gear train. A splined shaft (30) having a sun gear (32) at one end is coupled to the prime mover. The sun gear (32) meshes spur-wise with three compound star gears (50). These star gears are positioned at approximately the same distance from the axis of the splined shaft. The star gears (50) drive a second sun gear (56) carried at the end of a second quill shaft (54) which is adapted to be connected to the torque load. Preferably the sun gears and the star gears are fully crowned and machined to have a high contact ratio such that at least two pairs of gear teeth of each mesh are substantially in contact at all times. Because one end of each quill shaft is supported by the compound star gears, the pitch circles of the associated sun gear and star gears are substantially tangent to each other thereby minimizing vibration, noise, and stress.
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Dresser Industries Inc.
Novais David A.
Staab Lawrence J.
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