Feed device for sewing machine
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United States of America Patent
Stats
-
May 24, 1994
Grant Date -
N/A
app pub date -
Jan 21, 1993
filing date -
Mar 23, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A feed device for a sewing machine incorporates an upper feed dog above a throat plate and a lower feed dog below the throat plate and conveys material fabrics to a needle drop point by way of sandwiching the material fabrics between the upper and lower feed dogs. The feed device incorporates an energizing member for energizing the upper feed dog in the direction of the throat plate and controls the sandwiching force between the upper and lower feed dogs by constraining the energizing force generated by the energizing member.
First Claim
Family
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Cited Art Landscape
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