Patent US3854433A successfully refreshed from Google Patents.
US3854433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Zipper foot for use with sewing machine
Assignee: Janome Corp
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Filing: 1973-05-02
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Granted: 1974-12-17
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Expires: 1993-05-02
Abstract
Abstract A supporting member is attached to an upright presser bar of a sewing machine. A zipper foot is attached to the supporting member so as to be releasable therefrom. The position of the zipper foot on the supporting member can be changed, in direction transversely of the upright presser bar, so as to adjust the zipper foot for different types of zippers to be sewn onto a garment or other article.
Inventors
- 👤 S Hanyu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:23
CPC Classifications
D; D05; D05B; D05B29/00; D05B29/06
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
216 words
A zipper foot for use with sewing machines having a needle for sewing of material that is being fed in a longitudinal direction, and a supporting member provided with a zipper-foot retaining spring, said zipper foot comprising a base plate having a top face and a bottom face for contacting the material, a pair of opposite longitudinal edges extending in said direction and formed with respective inwardly extending needle recesses, and a pair of upstanding walls each projecting upwardly from said top face and being transversely spaced by a first width; a mounting pin extending transversely of said longitudinal edges from one to the other of said upstanding walls; and adjusting means axially shiftable on said mounting pin and having in axial direction of the same a second width smaller than said first width so that an axially extending portion of said mounting pin is always exposed for engagement with said supporting member and said retaining spring, said adjusting means being axially shiftable on said mounting pin between two first positions in each of which an imaginary line passing through said needle in said longitudinal direction intersects one of said needle recesses inwardly of the respectively associated edge, and two second positions in each of which said imaginary line coincides with one of said longitudinal edges.
Claim 2
Dependent Claim
216 words
A zipper foot for use with sewing machines having a needle for sewing of material that is being fed in a longitudinal direction, and a supporting member provided with a zipper-foot retaining spring, said zipper foot comprising a base plate having a top face and a bottom face for contacting the material, a pair of opposite longitudinal edges extending in said direction and formed with respective inwardly extending needle recesses, and a pair of upstanding walls each projecting upwardly from said top face and being transversely spaced by a first width; a mounting pin extending transversely of said longitudinal edges from one to the other of said upstanding walls; and adjusting means axially shiftable on said mounting pin and having in axial direction of the same a second width smaller than said first width so that an axially extending portion of said mounting pin is always exposed for engagement with said supporting member and said retaining spring, said adjusting means being axially shiftable on said mounting pin between two first positions in each of which an imaginary line passing through said needle in said longitudinal direction intersects one of said needle recesses inwardly of the respectively associated edge, and two second positions in each of which said imaginary line coincides with one of said longitudinal edges.
Claim 3
Dependent Claim
15 words
A combination as defined in claim 1, and a presser bar having a vertical orientation.
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) | 1977-12-16 | 1978-06-17 | 1978-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-16 | 1982-06-17 | 1982-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-16 | 1986-06-17 | 1986-12-17 | $7700.00 | Window Closed / Lapsed |