Reversible anti-backlash power transmission
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United States of America Patent
Stats
-
Feb 5, 1991
Grant Date -
N/A
app pub date -
Jan 12, 1989
filing date -
Jan 12, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A reversible anti-backlash power transmission for selectively transmitting power in opposite directions without backlash in the gear train. The transmission includes interconnected first and second gear boxes. Each gear box includes a drive shaft having a worm associated with the drive shaft for rotation therewith, a worm gear in meshing engagement with the worm, a driven shaft associated with the worm gear for rotation therewith, and a pinion gear structurally associated with the drive shaft for rotation therewith. A rack gear is in meshing engagement with the pinion gear of each of the first and second gear boxes. An electro-magentic coupler interconnects the drive shafts of the gear boxes. The coupler allows the automatic angular displacement of the drive shafts of the two gear boxes relative to each other to eliminate gear backlash in any of the mating gears.
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