Speed control device for an electric sewing machine
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United States of America Patent
Stats
-
Aug 22, 1989
Grant Date -
N/A
app pub date -
Jul 8, 1987
filing date -
Jul 10, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A delay circuit is realized by a program, instead of a conventional one of a hard system, so that if a pedal controller is rapidly stepped, a suitable speed acceleration or reduction curve may be always provided and the delay circuit is not affected by changes in temperatures or variations in passing time.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
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