Patent US3303804A successfully refreshed from Google Patents.
US3303804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unitary presser bar spring regulating devices
Assignee: Singer Co
•
Filing: 1964-10-15
•
Granted: 1967-02-14
•
Expires: 1984-10-15
Abstract
No abstract record available.
Inventors
- 👤 Lesort Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:04
CPC Classifications
D; D05; D05B; D05B29/00; D05B29/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A UNITARY REGULATING DEVICE FOR REGULATING THE PRESSURE WHICH A PRESSER BAR SPRING APPLIES TO THE PRESSER BAR OF A SEWING MACHINE, SAID UNITARY REGULATING DEVICE COMPRISING, AN ELONGATED GUIDE MEMBER PROVIDED AT ONE END WITH AN OPEN ENDED SLOT, AN ADJUSTING KNOB, A CAM TRACK ON SAID KNOB, MEANS FOR PIVOTALLY MOUNTING SAID KNOB ON SAID GUIDE MEMBER, AN ABUTMENT BRACKET ENTIRELY SUPPORTED BY AND SLIDABLY MOUNTED ON SAID GUIDE MEMBER, AN ARM ON SAID BRACKET ADAPTED TO ENGAGE SAID PRESSER BAR SPRING, A CAM FOLLOWER FORMED ON SAID BRACKET AND POSITIONED TO EXTEND THROUGH THE OPEN ENDED SLOT IN SAID GUIDE MEMBER TO ENGAGE THE CAM TRACK ON SAID KNOB, AND MEANS FOR SECURING SAID GUIDE MEMBER TO THE SAID SEWING MACHINE.
Claim 2
Dependent Claim
124 words
A UNITARY REGULATING DEVICE FOR REGULATING THE PRESSURE WHICH A PRESSER BAR SPRING APPLIES TO THE PRESSER BAR OF A SEWING MACHINE, SAID UNITARY REGULATING DEVICE COMPRISING, AN ELONGATED GUIDE MEMBER PROVIDED AT ONE END WITH AN OPEN ENDED SLOT, AN ADJUSTING KNOB, A CAM TRACK ON SAID KNOB, MEANS FOR PIVOTALLY MOUNTING SAID KNOB ON SAID GUIDE MEMBER, AN ABUTMENT BRACKET ENTIRELY SUPPORTED BY AND SLIDABLY MOUNTED ON SAID GUIDE MEMBER, AN ARM ON SAID BRACKET ADAPTED TO ENGAGE SAID PRESSER BAR SPRING, A CAM FOLLOWER FORMED ON SAID BRACKET AND POSITIONED TO EXTEND THROUGH THE OPEN ENDED SLOT IN SAID GUIDE MEMBER TO ENGAGE THE CAM TRACK ON SAID KNOB, AND MEANS FOR SECURING SAID GUIDE MEMBER TO THE SAID SEWING MACHINE.
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) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |