US3159123A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thread break detection device
Assignee: West Virginia Pulp and Paper Co
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Filing: 1961-10-20
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Granted: 1964-12-01
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Expires: 1981-10-20
Abstract
No abstract record available.
Inventors
- 👤 Homer A Godwin
- 👤 Frank G Brockardt
- 👤 Joseph H Koch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:30
CPC Classifications
D; D05; D05B; D05B51/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A THREAD BREAK DETECTION DEVICE FOR A SEWING MACHINE COMPRISING A HOUSING, SAID HOUSING SUITABLE FOR MOUNTING ON A SEWING MACHINE, STATIONARY THREAD GUIDE MEANS ATTACHED TO THE BOTTOM OF SAID HOUSING, A VERTICALLY MOVABLE ELONGATED THREAD GUIDE MEMBER EXTENDING THROUGH THE BOTTOM OF SAID HOUSING, A LOWER STOP ATTACHED TO THE VERTICALLY MOVABLE THREAD GUIDE MEMBER, AN ELECTRICAL SWITCH ATTACHED WITHIN SAID HOUSING, A LEVER ARM PIVOTALLY ATTACHED TO SAID ELECTRICAL SWITCH AND COACTING WITH THE LOWER STOP TO CLOSE THE ELECTRICAL SWITCH WHEN THE VERTICALLY MOVABLE MEMBER HAS MOVED DOWNWARD A PREDETERMINED DISTANCE.
Claim 2
Dependent Claim
95 words
A THREAD BREAK DETECTION DEVICE FOR A SEWING MACHINE COMPRISING A HOUSING, SAID HOUSING SUITABLE FOR MOUNTING ON A SEWING MACHINE, STATIONARY THREAD GUIDE MEANS ATTACHED TO THE BOTTOM OF SAID HOUSING, A VERTICALLY MOVABLE ELONGATED THREAD GUIDE MEMBER EXTENDING THROUGH THE BOTTOM OF SAID HOUSING, A LOWER STOP ATTACHED TO THE VERTICALLY MOVABLE THREAD GUIDE MEMBER, AN ELECTRICAL SWITCH ATTACHED WITHIN SAID HOUSING, A LEVER ARM PIVOTALLY ATTACHED TO SAID ELECTRICAL SWITCH AND COACTING WITH THE LOWER STOP TO CLOSE THE ELECTRICAL SWITCH WHEN THE VERTICALLY MOVABLE MEMBER HAS MOVED DOWNWARD A PREDETERMINED DISTANCE.
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) | 1967-12-01 | 1968-06-01 | 1968-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-01 | 1972-06-01 | 1972-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-01 | 1976-06-01 | 1976-12-01 | $7700.00 | Window Closed / Lapsed |