Speed control device for an electric sewing machine

Details Speed control device for an electric sewing machine Speed control device for an electric sewing machine

1987-07-08

1989-08-22

Shoop, Jr., William M.

Electricity: motor control systems

Closed loop speed control system for dc motor with commutator

Armature control by digital or combined analog and digital...

364174, H02P 500

Patent

active

048599174

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.

REFERENCES:
patent: 4386301 (1983-05-01), Neki et al.
patent: 4486693 (1984-12-01), Hamati et al.
patent: 4488103 (1984-12-01), Morinaga et al.
patent: 4556001 (1985-12-01), Neki et al.
patent: 4680515 (1987-07-01), Crook

Affiliated with

Also associated with

Rating

Speed control device for an electric sewing machine does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Speed control device for an electric sewing machine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Speed control device for an electric sewing machine will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2418807