US3638595A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multipurpose presser foot
Assignee: Mefina SA
•
Filing: 1970-09-03
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Granted: 1972-02-01
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Expires: 1990-09-03
Abstract
Abstract A multipurpose presser foot for sewing machines comprises a sole pivotally mounted to a flange-plate for attaching the foot to a presser bar with an alignment so that, in operation, a part of the lower surface of the sole is adjacent to completed stitching. So as to facilitate passage thereunder of raised stitching, this part is retractable from the lower plane of the sole against the action of a spring. The retractable part is connected to the rest of the sole in the manner of a deformable parallelogram by means of a set of articulated members so that the retractable part, when displaced, remains parallel to the said plane.
Inventors
- 👤 Ramon Casas-Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:26
CPC Classifications
D; D05; D05B; D05B29/00; D05B29/06
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
119 words
A multipurpose presser foot for sewing machines, comprising a sole pivotally mounted on a member for attaching the foot to a presser bar with a given alignment, so that when in operation a part of the lower surface of the sole is located adjacent to completed stitching, the said part of the sole being retractable from a lower plane of the lower surface of the sole against the action of a spring, so as to facilitate passage thereunder of raised stitching, the retractable part being connected to the rest of the sole in the manner of a deformable parallelogram by means of a set of articulated members, so that the retractable part when displaced remains parallel to said plane.
Claim 2
Dependent Claim
119 words
A multipurpose presser foot for sewing machines, comprising a sole pivotally mounted on a member for attaching the foot to a presser bar with a given alignment, so that when in operation a part of the lower surface of the sole is located adjacent to completed stitching, the said part of the sole being retractable from a lower plane of the lower surface of the sole against the action of a spring, so as to facilitate passage thereunder of raised stitching, the retractable part being connected to the rest of the sole in the manner of a deformable parallelogram by means of a set of articulated members, so that the retractable part when displaced remains parallel to said plane.
Claim 3
Dependent Claim
58 words
A presser foot as claimed in claim 1, in which the retractable part of the sole is suspended in an opening in a rear part of the sole, a transversal bar defining a front end of the opening, and the retractable part of the sole abutting against the transversal bar when in a lowermost position in said plane.
Claim 4
Dependent Claim
65 words
A presser foot as claimed in claim 1, in which the set of articulated members comprises a stirrup piece pivotally mounted on the sole about an axis transversal to the sole, branches of the stirrup piece being pivotally mounted to the retractable part, and a pair of arms pivotally mounted at one end to the sole and at the other end to the retractable part.
Claim 5
Dependent Claim
128 words
A presser foot as claimed in claim 3, in which the set of articulated members comprises a stirruP piece pivotally mounted on the sole about an axis transversal to the sole, branches of the stirrup piece being pivotally mounted to the retractable part, and a pair of arms pivotally mounted at one end to the sole and at the other end to the retractable part, the sole being pivotally mounted on a flange-plate for attaching the foot to a presser bar about said transversal axis, a spring urging the retractable part about said transversal axis towards said lowermost position in said plane and tending, when the retractable part is in the lowermost position, to pivot the sole about the said transversal axis to raise a front end thereof.
References Cited (Backward Citations)
US1958233A
Cited
US2671422A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-31 | 1975-08-02 | 1976-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-31 | 1979-08-02 | 1980-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-31 | 1983-08-02 | 1984-02-01 | $7700.00 | Window Closed / Lapsed |