Bidirectional driving device
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United States of America Patent
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Feb 4, 2014
Grant Date -
Aug 19, 2010
app pub date -
Oct 10, 2008
filing date -
Oct 12, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
A bidirectional driving device includes a ratchet wheel, a movable handle, a fixed casing, a pawl reset spring, a handle reset spring and a central shaft. The handle reset spring is in an inner hole of the ratchet wheel. A positioning column of the handle reset spring is placed in sliding slots of the movable handle and of the fixed casing. First and second pawls are disposed between the ratchet wheel and the movable handle. Tooth sections of the first and second pawls are engaged with ratchet teeth of the ratchet wheel. Positioning columns of the first and second pawls are connected with the movable handle. Bosses of the first and second pawls are placed in sliding slots of the fixed casing, each composed of two circular arc slot sections with different radius. The pawl reset spring is connected with the bosses and with the central shaft.
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