Invention Grant
- Patent Title: Speed control device for an electric sewing machine
- Patent Title (中): 电动缝纫机调速装置
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Application No.: US73692Application Date: 1987-07-08
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Publication No.: US4859917APublication Date: 1989-08-22
- Inventor: Michio Hisatake , Satoru Ishikawa
- Applicant: Michio Hisatake , Satoru Ishikawa
- Applicant Address: JPX Tokyo
- Assignee: Janome Sewing Machine Co. Ltd.
- Current Assignee: Janome Sewing Machine Co. Ltd.
- Current Assignee Address: JPX Tokyo
- Priority: JPX61-105015[U] 19860710
- Main IPC: H02P25/04
- IPC: H02P25/04 ; D05B69/18 ; H02P23/00 ; H02P27/02
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.
Public/Granted literature
- USD414373S Toaster Public/Granted day:1999-09-28
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