Sewing machine
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 26, 2009
Grant Date -
Oct 2, 2008
app pub date -
Mar 26, 2008
filing date -
Mar 27, 2007
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A sewing machine includes an upper looper formed with a thread hole, an upper looper shaft which oscillates the upper looper between an upper position and a lower position, switching means operable to switch a coupled state and a decoupled state between the upper looper and the upper looper shaft, moving means for moving the upper looper, which has been decoupled from the upper looper shaft by the switching means, to the lower position, a thread guiding pipe formed with a thread discharging port, and first operating means operable to decouple the upper looper and the upper looper shaft via the switching means, and to move the thread discharging port of the thread guiding pipe to a position at which the thread discharging port is aligned with the thread hole of the upper looper in the lower position.
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Family
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Cited Art Landscape
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