Fully rotating hook for a lock stitch sewing machine
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 9, 1987
Issued Date -
N/A
app pub date -
Oct 2, 1985
filing date -
Sep 6, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A fully rotating hook includes an outer member or rotary loop taker having a track groove therein and an inner shuttle member or bobbin case a projection extending into the groove. A spaced relation between the track groove and the projection is maintained by feeding compressed air into a clearance therebetween. The compressed air is fed through a plurality of air holes opening into the track groove to direct air jets to upper, lower and radially outermost surfaces of the projection on the bobbin case. Furthermore, the loop taker is rotated on a hollow shaft which has an air passage therethrough for feeding compressed air to the plurality of air holes which open into the track groove of the loop taker.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully