Sewing machine

Details Sewing machine Sewing machine

2011-07-19

2011-07-19

Welch, Gary L. (Department: 3765)

Data processing: generic control systems or specific application

Specific application, apparatus or process

Product assembly or manufacturing

C112S470040, C112S470060

Reexamination Certificate

active

07983780

ABSTRACT:
A sewing machine including an input unit that inputs a thread cut instruction; a thread cutting mechanism that cuts a needle thread and a bobbin thread based on the thread cut instruction; a feed dog vertically moving mechanism that vertically drives a feed dog for feeding a workpiece cloth; a feed dog activating switch unit that switches the feed dog between an active state in which the feed dog is vertically driven by the feed dog vertically moving mechanism and an inactive state in which an upper surface of the feed dog is positioned in a lowered position below an upper surface of a needle plate provided in a sewing machine bed; and a control unit that drives the thread cutting mechanism based on the thread cut instruction inputted from the input unit and that controls the feed dog activating switch unit to switch the feed dog to the inactive state in which the feed dog is positioned in the lowered position.

REFERENCES:
patent: 4236469 (1980-12-01), Takenoya et al.
patent: 4368683 (1983-01-01), Takenoya
patent: 4823715 (1989-04-01), Horie et al.
patent: 6082279 (2000-07-01), Ito et al.
patent: B2 63-46711 (1988-02-01), None
patent: A 2000-24353 (2000-01-01), None

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