SPIRAL SPRING DEVICE
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United States of America Patent
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Issued Date -
Apr 25, 2024
app pub date -
Feb 16, 2022
filing date -
Feb 16, 2022
priority date (Note) -
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status (Latency Note)
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Abstract
Provided is a spiral spring device that increases the rotational range of the rotary shaft of an apparatus, that secures the strength of the rotary shaft, and that makes the functional components to be more easily housed inside of the rotary shaft, in which an inner end of a spiral spring is coupled to a shaft, and an outer end of the spiral spring is coupled to a sub shaft that is different from the shaft of the apparatus. The inner end of the spiral spring is shaped to follow the outline of the shaft to be coupled to the shaft by tightening.
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