Rotary hook
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United States of America Patent
Stats
-
Oct 20, 1987
Grant Date -
N/A
app pub date -
Jun 12, 1985
filing date -
Feb 21, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A fully rotating hook includes an inner bobbin case, an outer loop taker mounted about the bobbin case, the loop taker having a track groove formed therein, a rotating member for rotating the loop taker such that relative rotation occurs between the loop taker and the bobbin case, and a stopper member for preventing rotation of the bobbin case with the loop taker while the loop taker is rotating. The bobbin case includes a case body having a bottom and accommodated in the loop taker, and a track projection member made of synthetic resin material having a substantially small friction coefficient and removably fixed to the case body. The track projection member includes a flange-like track projection fitting within the track groove of the loop taker and a surrounding portion for surrounding the bottom of the loop taker.
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