US3094087A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Feed dog and throat plate for compound feed sewing machines
Assignee: Singer Co
•
Filing: 1960-11-23
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Granted: 1963-06-18
•
Expires: 1980-11-23
Abstract
No abstract record available.
Inventors
- 👤 Charles L Thorne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:40
CPC Classifications
D; D05; D05B; D05B73/00; D05B73/04; D05B73/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
IN A COMPOUND FEED SEWING MACHINE, A THROAT PLATE HAVING A PORTION FORMED WITH A NEEDLE APERTURE ELONGATE IN THE DIRECTION OF FEED SUBSTANTIALLY THE LENGTH OF THE LONGEST STITCH ADAPTED TO BE PRODUCED BY SAID SEWING MACHINE AND WITH PARALLEL FEED DOG SLOTS ELONGATE IN THE DIRECTION OF FEED AND DISPOSED ONE AT EACH SIDE OF SAID NEEDLE APERTURE, A FEED DOG, UPSTANDING WORK ENGAGING RIBS FORMED ON SAID FEED DOG AND OPERABLE UPWARDLY THROUGH SAID FEED DOG SLOTS IN THE THROAT PLATE, A WEB PORTION OF SAID FEED DOG EXTENDING BETWEEN SAID WORK ENGAGING RIBS AND DISPOSED BENEATH THAT PORTION OF SAID THROAT PLATE FORMED WITH SAID NEEDLE APERTURE, SAID FEED DOG WEB BEING FORMED WITH A LINT CLEARING APERTURE EXTENDING SUBSTANTIALLY THE ENTIRE WIDTH OF SAID WEB BETWEEN SAID WORK ENGAGING RIBS, AND SAID FEED DOG WEB BEING PROVIDED WITH A NEEDLE ACCOMMODATING APERTURE FORMED AS A NARROW SLOT EXTENDING FROM SAID LINT CLEARING APERTURE AND DISPOSED BENEATH SAID NEEDLE APERTURE IN SAID THROAT PLATE.
Claim 2
Dependent Claim
168 words
IN A COMPOUND FEED SEWING MACHINE, A THROAT PLATE HAVING A PORTION FORMED WITH A NEEDLE APERTURE ELONGATE IN THE DIRECTION OF FEED SUBSTANTIALLY THE LENGTH OF THE LONGEST STITCH ADAPTED TO BE PRODUCED BY SAID SEWING MACHINE AND WITH PARALLEL FEED DOG SLOTS ELONGATE IN THE DIRECTION OF FEED AND DISPOSED ONE AT EACH SIDE OF SAID NEEDLE APERTURE, A FEED DOG, UPSTANDING WORK ENGAGING RIBS FORMED ON SAID FEED DOG AND OPERABLE UPWARDLY THROUGH SAID FEED DOG SLOTS IN THE THROAT PLATE, A WEB PORTION OF SAID FEED DOG EXTENDING BETWEEN SAID WORK ENGAGING RIBS AND DISPOSED BENEATH THAT PORTION OF SAID THROAT PLATE FORMED WITH SAID NEEDLE APERTURE, SAID FEED DOG WEB BEING FORMED WITH A LINT CLEARING APERTURE EXTENDING SUBSTANTIALLY THE ENTIRE WIDTH OF SAID WEB BETWEEN SAID WORK ENGAGING RIBS, AND SAID FEED DOG WEB BEING PROVIDED WITH A NEEDLE ACCOMMODATING APERTURE FORMED AS A NARROW SLOT EXTENDING FROM SAID LINT CLEARING APERTURE AND DISPOSED BENEATH SAID NEEDLE APERTURE IN SAID THROAT PLATE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-17 | 1966-12-17 | 1967-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-17 | 1970-12-17 | 1971-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-17 | 1974-12-17 | 1975-06-18 | $7700.00 | Window Closed / Lapsed |