US3196815A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sewing machine having lower and upper work-feeding members
Assignee: Duerkoppwerke GmbH
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Filing: 1962-12-31
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Granted: 1965-07-27
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Expires: 1982-12-31
Abstract
No abstract record available.
Inventors
- 👤 Hagen Wolf-Rudiger Von
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:50
CPC Classifications
D; D05; D05B; D05B27/00; D05B27/02; D05B27/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
236 words
A SEWING MACHING HAVING A FEED DEVICE WITH LOWER AND UPPER FEED MEMBERS, A PRESSER MEMBER HAVING A PRESSER FOOT AO ONE END THEREOF, THE UPPER FEED MEMBER OF SAID DEVICE COMPRISING A FEEDER FOOT, TOGGLE MEANS HAVING A CENTERED POSITION AND BEING POSITIONABLE ON EITHER SIDE OF CENTER FOR ALTERNATELY RAISING SAID PRESSER FOOT AND UPPER FEED FOOT AND FOR ALTERNATELY LOWERING SAID PRESSER FOOT AND SAID FEED FOOT, OPERATING MEANS CONNECTED TO SAID TOGGLE MEANS, SAID TOGGLE MEANS COMPRISING A DOUBLE TOGGLE FORMED FROM A TRIANGULAR LEVER HAVING THREE ARTICULATION POINTS, AND COMPRESSION SPRING AND SPRING MEMBER, WHICH SERVE AS THE ONE COMMON ARM OF THE DOUBLE TOGGLE AND ARE ARTICULATED ON ONE OF THE THREE ARTICULATION POINTS OF THE TRIANGULAR LEVER, A PORTION OF THE TRIANGULAR LEVER CONNECTING THE ONE OF THE THREE ARTICULATION POINTS TO A SECOND OF THE THREE ARTICULATION POINTS AND CONSTITUTION THE SECOND ARM OF ONE TOGGLE OF THE DOUBLE TOGGLE AND A PORTION OF THE TRIANGULAR LEVER CONNECTING THE ONE OF THE THREE ARTICULATION POINTS TO THE THIRD OF SAID THREE ARTICULATION POINTS CONSTITUTING THE SECOND ARM OF THE SECOND TOGGLE OF SAID DOUBLE TOGGLE, MEANS CONNECTING THE PRESSER MEMBER TO THE LEVER AT THE SECOND ARTICULATION POINT, MEANS CONNECTING THE UPPER FEED MEMBER TO THE LEVER AT THE THIRD ARTICULATION POINT, AND MEANS CONNECTED TO SAID UPPER FEED MEMBER TO IMPART FEEDING MOTION TO SAID FEEDER FOOT.
Claim 2
Dependent Claim
236 words
A SEWING MACHING HAVING A FEED DEVICE WITH LOWER AND UPPER FEED MEMBERS, A PRESSER MEMBER HAVING A PRESSER FOOT AO ONE END THEREOF, THE UPPER FEED MEMBER OF SAID DEVICE COMPRISING A FEEDER FOOT, TOGGLE MEANS HAVING A CENTERED POSITION AND BEING POSITIONABLE ON EITHER SIDE OF CENTER FOR ALTERNATELY RAISING SAID PRESSER FOOT AND UPPER FEED FOOT AND FOR ALTERNATELY LOWERING SAID PRESSER FOOT AND SAID FEED FOOT, OPERATING MEANS CONNECTED TO SAID TOGGLE MEANS, SAID TOGGLE MEANS COMPRISING A DOUBLE TOGGLE FORMED FROM A TRIANGULAR LEVER HAVING THREE ARTICULATION POINTS, AND COMPRESSION SPRING AND SPRING MEMBER, WHICH SERVE AS THE ONE COMMON ARM OF THE DOUBLE TOGGLE AND ARE ARTICULATED ON ONE OF THE THREE ARTICULATION POINTS OF THE TRIANGULAR LEVER, A PORTION OF THE TRIANGULAR LEVER CONNECTING THE ONE OF THE THREE ARTICULATION POINTS TO A SECOND OF THE THREE ARTICULATION POINTS AND CONSTITUTION THE SECOND ARM OF ONE TOGGLE OF THE DOUBLE TOGGLE AND A PORTION OF THE TRIANGULAR LEVER CONNECTING THE ONE OF THE THREE ARTICULATION POINTS TO THE THIRD OF SAID THREE ARTICULATION POINTS CONSTITUTING THE SECOND ARM OF THE SECOND TOGGLE OF SAID DOUBLE TOGGLE, MEANS CONNECTING THE PRESSER MEMBER TO THE LEVER AT THE SECOND ARTICULATION POINT, MEANS CONNECTING THE UPPER FEED MEMBER TO THE LEVER AT THE THIRD ARTICULATION POINT, AND MEANS CONNECTED TO SAID UPPER FEED MEMBER TO IMPART FEEDING MOTION TO SAID FEEDER FOOT.
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) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |