US3872810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Needle protector
Assignee: LEES Manufacturing CO
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Filing: 1973-10-10
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Granted: 1975-03-25
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Expires: 1993-10-10
Abstract
Abstract A needle protector and guard for sewing machines arranged to receive the needle at the bottom of its stroke. The protector includes a generally U-shaped member designed to receive the needle between the upstanding arms thereof, while permitting the loopers of the machine to move thereover for proper looping and holding of the thread.
Inventors
- 👤 Lloyd B Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:30
CPC Classifications
D; D05; D05B; D05B55/00; D05B55/06
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
157 words
In a sewing machine provided with a needle, a pair of looping mechanisms, which looping mechanisms have loopers arranged on opposite sides of the needle and which are alternatively actuated to receive the thread loop from the needle, a needle protective device including: a. a first mounting arm; b. said mounting arm having means for attaching the same to the machine; c. a needle receiving area provided on said mounting arm in position to receive the needle therein during at least a portion of its upward and downward stroke, said area being defined by a downwardly directed portion of said mounting arm and a laterally spaced, upwardly extending arm, said upwardly extending arm having a plurality of angularly arranged surfaces on the upper portion thereof to normally direct the needle into said receiving area; and, d. said protective device being positioned relative to the loopers to permit the loopers to pass upwardly and across said receiving area.
Claim 2
Dependent Claim
157 words
In a sewing machine provided with a needle, a pair of looping mechanisms, which looping mechanisms have loopers arranged on opposite sides of the needle and which are alternatively actuated to receive the thread loop from the needle, a needle protective device including: a. a first mounting arm; b. said mounting arm having means for attaching the same to the machine; c. a needle receiving area provided on said mounting arm in position to receive the needle therein during at least a portion of its upward and downward stroke, said area being defined by a downwardly directed portion of said mounting arm and a laterally spaced, upwardly extending arm, said upwardly extending arm having a plurality of angularly arranged surfaces on the upper portion thereof to normally direct the needle into said receiving area; and, d. said protective device being positioned relative to the loopers to permit the loopers to pass upwardly and across said receiving area.
Claim 3
Dependent Claim
42 words
The structure as set forth in claim 1 and said receiving area including said first laterally spaced, upwardly extending arm and a second upwardly extending arm, said second upwardly extending arm being attachable to said downwardly directed portion of said mounting arm.
Claim 4
Dependent Claim
34 words
The structure as set forth in claim 2 and said second arm being spaced from said first arm a dimension to permit said downwardly directed portion of said mounting arm to be received therebetween.
Claim 5
Dependent Claim
43 words
The structure as set forth in claim 1 and said downwardly directed portion of said mounting arm being smoothly contoured at the upper portion thereof to direct the needle into said receiving area should the needle contact the same on its downward stroke.
Claim 6
Dependent Claim
17 words
The structure set forth in claim 1 and said receiving area being open at the ends thereof.
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) | 1978-03-24 | 1978-09-23 | 1979-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-24 | 1982-09-23 | 1983-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-24 | 1986-09-23 | 1987-03-25 | $7700.00 | Window Closed / Lapsed |