Patent US3705562A successfully refreshed from Google Patents.
US3705562A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary shuttle for sewing machines
Assignee: Janome Corp
•
Filing: 1971-04-27
•
Granted: 1972-12-12
•
Expires: 1991-04-27
Abstract
Abstract A rotary shuttle for a sewing machine is made of two plates which are press-formed to have dished wall portions and partcircular flanges circumferentially abutting each other, and being brazed or welded together. The plates are cut out to form a recess for the passage of a sewing needle, and a hook for catching a thread.
Inventors
- 👤 Susumu Hanyu
- 👤 Takashi Amano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:31
CPC Classifications
D; D05; D05B; D05B33/00; D05B57/00; D05B57/08; D05B57/10; D05B57/14; D05D; D05D2207/00; D05D2207/02; D05D2303/00; D05D2303/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
174 words
For use with a sewing machine, a rotary shuttle having an axis, and comprising: a main body having a central wall portion through which said axis passes, a first dished wall portion on one side of said central wall portion continuing the same, a peripheral hook portion, and an arcuate first flange projecting parallel to said axis in one direction from a part of the periphery of said first dished wall portion; and a front body having a second dished wall portion confronting said first dished wall portion, and an arcuate second flange projecting parallel to said axis in a direction opposite to said one direction from a part of the periphery of said second dished wall portion, said first and second flanges having first and second circumferential surfaces abutting each other and being bonded together to form an arcuate rim along and between said first and second dished wall portions so that the same form a cavity for a bobbin case, and have outer surfaces adapted to guide and enlarge a thread loop.
Claim 2
Dependent Claim
174 words
For use with a sewing machine, a rotary shuttle having an axis, and comprising: a main body having a central wall portion through which said axis passes, a first dished wall portion on one side of said central wall portion continuing the same, a peripheral hook portion, and an arcuate first flange projecting parallel to said axis in one direction from a part of the periphery of said first dished wall portion; and a front body having a second dished wall portion confronting said first dished wall portion, and an arcuate second flange projecting parallel to said axis in a direction opposite to said one direction from a part of the periphery of said second dished wall portion, said first and second flanges having first and second circumferential surfaces abutting each other and being bonded together to form an arcuate rim along and between said first and second dished wall portions so that the same form a cavity for a bobbin case, and have outer surfaces adapted to guide and enlarge a thread loop.
Claim 3
Dependent Claim
39 words
A rotary shuttle as claimed in claim 1 comprising a pin secured to said central portion and projecting from the same in said one direction concentric with said axis for supporting a bobbin case for rotation about said axis.
Claim 4
Dependent Claim
31 words
A rotary shuttle as claimed in claim 1 wherein said main body includes a supporting wall portion having a tongue located on said first flange for supporting and reinforcing said hook.
Claim 5
Dependent Claim
42 words
A rotary shuttle as claimed in claim 1 wherein said front body is formed with a slot for passage of a needle and located adjacent said second flange; and a pair of projections defining said slot and being spaced in axial direction.
Claim 6
Dependent Claim
57 words
A rotary shuttle as claimed in claim 1 wherein said main body has a shoulder located between said first dished wall portion and said first flange and being perpendicular to the latter; wherein said second flange is located within said first flange; and wherein the edge of said second flange abuts the inner surface of said shoulder.
Claim 7
Dependent Claim
32 words
A rotary shuttle as claimed in claim 5 wherein said front body has a narrow shoulder between said second dished portion and said second flange and being perpendicular to said second flange.
Claim 8
Dependent Claim
32 words
A rotary shuttle as claimed in claim 1 wherein said main body and said front body are first and second plates, each of said first and second plates being of uniform thickness.
Claim 9
Dependent Claim
31 words
A rotary shuttle as claimed in claim 7 wherein said first flange has a cutout adjacent said hook; and wherein said hook is formed of a portion of said first flange.
Claim 10
Dependent Claim
21 words
A rotary shuttle as claimed in claim 1 wherein said first and second flanges extend along circles concentric with said axis.
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) | 1975-12-12 | 1976-06-12 | 1976-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-12 | 1980-06-12 | 1980-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-12 | 1984-06-12 | 1984-12-12 | $7700.00 | Window Closed / Lapsed |