Machine element or mechanism – Rotary member or shaft indexing – e.g. – tool or work turret – Preselected indexed position
Patent
1983-04-19
1985-06-25
Braun, Leslie A.
Machine element or mechanism
Rotary member or shaft indexing, e.g., tool or work turret
Preselected indexed position
74573R, 74805, F16H 128
Patent
active
045246440
ABSTRACT:
A speed reduction mechanism having an orbital drive system. A first crank arm drives the orbital system and a second crank arm, offset by 180 degrees, carries a counterweight for counter balancing the off center forces produced by the orbital system.
To minimize inertia, the counterweight is symmetrically shaped about its axis and is mounted for free rotation about the second crank arm. Such a counterweight may have a smaller degree of eccentricity and a correspondingly greater mass than a conventional counterweight, but because the inertia is a function of the square of the eccentricity of the counterweight, the inertia may be significantly less.
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patent: 4271726 (1981-06-01), Ryffel
"Dojen Orbital Drive", Dolan-Jenner Industries, Bulletin 1200B.
Barrett E. Thorpe
Braun Leslie A.
Diehl Dwight G.
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