Patent US3143094A successfully refreshed from Google Patents.
US3143094A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure foot for sewing machine
Assignee: KOSHIN SEIMITSU KIKAI KK
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Filing: 1962-10-12
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Granted: 1964-08-04
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Expires: 1982-10-12
Abstract
No abstract record available.
Inventors
- 👤 Yamada Kaichi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:35
CPC Classifications
D; D05; D05B; D05B29/00; D05B29/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A PRESSURE FOOT FOR SEWING MACHINES HAVING A PRESSURE FOOT BAR COMPRISING A SHANK DETACHABLY CONNECTABLE TO THE SEWING MACHINE PRESSURE FOOT BAR, SAID SHANK HAVING A BOTTOM SLOT AND A BORE EXTENDING TO ONE SIDE OF SAID SLOT, A PIN SLIDEABLY MOUNTED IN SAID BORE, RESILIENT MEANS TENDING TO RETAIN SAID PIN EXTENDING FROM SAID BORE INTO SAID SLOT, A PRESSURE SHOE, AN AXLE MOUNTED ON SAID PRESSURE SHOE INSERTABLE IN SAID SLOT FOR BEING DETACHABLY RETAINED BY SAID PIN WHEREBY SAID PRESSURE SHOE IS DETACHABLY CONNECTED TO SAID SHANK AND SAID SHANK BOTTON SLOT BEING DEFINED AT THE INNER END THEREOF BY A CONVEX WALL AGAINST WHICH SAID AXLE ABUTS WHEN IN SAID SLOT TO PERMIT A ROCKING OF SAID SHOE RELATIVE TO SAID SHANK WHEN IN USE.
Claim 2
Dependent Claim
130 words
A PRESSURE FOOT FOR SEWING MACHINES HAVING A PRESSURE FOOT BAR COMPRISING A SHANK DETACHABLY CONNECTABLE TO THE SEWING MACHINE PRESSURE FOOT BAR, SAID SHANK HAVING A BOTTOM SLOT AND A BORE EXTENDING TO ONE SIDE OF SAID SLOT, A PIN SLIDEABLY MOUNTED IN SAID BORE, RESILIENT MEANS TENDING TO RETAIN SAID PIN EXTENDING FROM SAID BORE INTO SAID SLOT, A PRESSURE SHOE, AN AXLE MOUNTED ON SAID PRESSURE SHOE INSERTABLE IN SAID SLOT FOR BEING DETACHABLY RETAINED BY SAID PIN WHEREBY SAID PRESSURE SHOE IS DETACHABLY CONNECTED TO SAID SHANK AND SAID SHANK BOTTON SLOT BEING DEFINED AT THE INNER END THEREOF BY A CONVEX WALL AGAINST WHICH SAID AXLE ABUTS WHEN IN SAID SLOT TO PERMIT A ROCKING OF SAID SHOE RELATIVE TO SAID SHANK WHEN IN USE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-04 | 1968-02-03 | 1968-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-04 | 1972-02-03 | 1972-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-04 | 1976-02-03 | 1976-08-04 | $7700.00 | Window Closed / Lapsed |