US4259913A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic pattern control sewing machine
Assignee: Janome Corp
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Filing: 1979-05-21
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Granted: 1981-04-07
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Expires: 1999-05-21
Abstract
Abstract A sewing machine has stitch forming instrumentalities synchronously operated with the upper drive shaft to produce a variety of stitch patterns using a plurality of manual pattern selecting switches to produce pattern selecting signals specific to the pattern selected in conjunction with a pulse generator which produces a pulse per rotation of the upper shaft which pulse triggers a free-running pulse from an oscillator which are then progressively registered by a counter that addresses a static memory to produce a signal for stopping the operation of the oscillator, and control means for selectively applying the counter contents to the stitch forming instrumentalities.
Inventors
- 👤 Hideaki Takenoya
- 👤 Hachiro Makabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:33
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/04; G05B19/10; G05B19/106; D; D05; D05B; D05B19/00; D05B19/02; D05B19/04; D05B19/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
A sewing machine having stitch forming instrumentalities operated in synchronism with the upper drive shaft to change the relative positions of the needle and the sewn material to stitch patterns, comprising a plurality of pattern selecting switches (SW 1 -SW 5 ) manually operated to produce pattern selecting signals each specific to the patterns to be selected; a pulse generator (P.S) producing a pulse per rotation of the upper drive shaft at a predetermined angular position thereof; an oscillator (AM) producing a free-running pulse in response to the pulse from the pulse generator; a counter (C) progressively counting the number of the pulses produced by the oscillator; a static memory (ROM) addressed by the progressive counting of the counter to produce a signal for stopping the operation of the oscillator; and control means for selectively applying the counting contents of the counter to the stitch forming instrumentalities.
Claim 2
Dependent Claim
147 words
A sewing machine having stitch forming instrumentalities operated in synchronism with the upper drive shaft to change the relative positions of the needle and the sewn material to stitch patterns, comprising a plurality of pattern selecting switches (SW 1 -SW 5 ) manually operated to produce pattern selecting signals each specific to the patterns to be selected; a pulse generator (P.S) producing a pulse per rotation of the upper drive shaft at a predetermined angular position thereof; an oscillator (AM) producing a free-running pulse in response to the pulse from the pulse generator; a counter (C) progressively counting the number of the pulses produced by the oscillator; a static memory (ROM) addressed by the progressive counting of the counter to produce a signal for stopping the operation of the oscillator; and control means for selectively applying the counting contents of the counter to the stitch forming instrumentalities.
References Cited (Backward Citations)
US4145982A
Cited
DE2825736A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-04-06 | 1984-10-06 | 1985-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-06 | 1988-10-06 | 1989-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-06 | 1992-10-06 | 1993-04-07 | $7700.00 | Window Closed / Lapsed |