Patent US3296987A successfully refreshed from Google Patents.
US3296987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control device for changing the range of starting point and swing amplitude of a needle in a zigzag sewing machine
Assignee: RICCAR SEWING MACHINE CO Ltd
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Filing: 1965-07-21
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Granted: 1967-01-10
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Expires: 1985-07-21
Abstract
No abstract record available.
Inventors
- 👤 Kawaguchi Shinichi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:12
CPC Classifications
D; D05; D05B; D05B19/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
IN A ZIGZAG SEWING MACHINE HAVING A PUSH ROD, A NEEDLE BAR WHICH MOVES SIDEWARDS IN RESPONSE TO SAID PUSH ROD ACTING THEREAGAINST, AN ADJUSTABLE SWING AMPLITUDE CONTROL MECHANISM COMPRISING A ROCKER BAR CONNECTED AT ONE END TO PIVOT ABOUT A FIXED POINT IN SAID MACHINE IN A PLANE PARALLEL TO SAID PUSH ROD, A CONNECTING ARM ALSO PIVOTED AT ONE END TO A FIXED POINT IN SAID MACHINE, A CONNECTING LINK PIVOTALLY CONNECTED AT ONE END TO THE OTHER END OF SAID CONNECTING ARM, THE OTHER END OF SAID CONNECTING LINK BEING PIVOTALLY AND SLIDABLY CONNECTED TO SAID ROCKER BAR AT SELECTABLE POINTS THEREALONG TO CONTROL THE SWING AMPLITUDE OF SAID NEEDLE BAR, AN ARCUATE ARM, MEANS MOUNTING SAID ARCUATE ARM PARALLEL TO AND ROTATABLE WITH SAID CONNECTING ARM, AN INTERLOCKING LEVER HAVING
Claim 2
Dependent Claim
134 words
IN A ZIGZAG SEWING MACHINE HAVING A PUSH ROD, A NEEDLE BAR WHICH MOVES SIDEWARDS IN RESPONSE TO SAID PUSH ROD ACTING THEREAGAINST, AN ADJUSTABLE SWING AMPLITUDE CONTROL MECHANISM COMPRISING A ROCKER BAR CONNECTED AT ONE END TO PIVOT ABOUT A FIXED POINT IN SAID MACHINE IN A PLANE PARALLEL TO SAID PUSH ROD, A CONNECTING ARM ALSO PIVOTED AT ONE END TO A FIXED POINT IN SAID MACHINE, A CONNECTING LINK PIVOTALLY CONNECTED AT ONE END TO THE OTHER END OF SAID CONNECTING ARM, THE OTHER END OF SAID CONNECTING LINK BEING PIVOTALLY AND SLIDABLY CONNECTED TO SAID ROCKER BAR AT SELECTABLE POINTS THEREALONG TO CONTROL THE SWING AMPLITUDE OF SAID NEEDLE BAR, AN ARCUATE ARM, MEANS MOUNTING SAID ARCUATE ARM PARALLEL TO AND ROTATABLE WITH SAID CONNECTING ARM, AN INTERLOCKING LEVER HAVING
References Cited (Backward Citations)
US592510A
Cited
US3217677A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-09 | 1970-07-11 | 1971-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-09 | 1974-07-11 | 1975-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-09 | 1978-07-11 | 1979-01-10 | $7700.00 | Window Closed / Lapsed |