Adjustment drive for adjusting the string tension of a stringed instrument
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United States of America Patent
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Jul 8, 2014
Issued Date -
N/A
app pub date -
Mar 24, 2011
filing date -
Mar 24, 2010
priority date (Note) -
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Abstract
A combined manual and motorized adjustment drive for adjusting the string tension of a stringed instrument having a tuning peg, a drive motor, a force-transmitting member for transmitting a drive force to the tuning peg and a manually operable adjustment element which couples with the force-transmitting member for manual adjustability of the rotary position of the tuning peg wherein said adjustment drive is improved in that in allows a compact design in addition to reliable self-retention and good adjustability of the manual drive. The force-transmitting member is an at least three-stage reduction gear having a first gear stage on which the drive motor acts with an output shaft and a last gear stage which acts on the tuning peg in order to rotate the latter, and the adjustment element acts on a gear stage of the reduction gear between the first and the last gear stages to introduce the force.
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