US2744408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for continuously determining mass per unit length
Assignee: EIDP Inc
•
Filing: 1950-10-25
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Granted: 1956-05-08
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Expires: 1970-10-25
Abstract
No abstract record available.
Inventors
- 👤 John S Seney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:25
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/36; G01N33/365
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
AN APPARATUS FOR DETERMINING MASS PER UNIT LENGTH OF YARN OR THE LIKE WHICH COMPRISES TWO SUPPORTS SPACED A FIXED DISTANCE APART, YARN FEEDING MEANS FOR ADVANCING YARN OVER SAID SUPPORTS UNDER CONSTANT TENSION, A PHOTOELECTRICAL CIRCUIT RESPONSIVE TO VIBRATIONS OF THE YARN PASSING BETWEEN SAID SUPPORTS FOR TRANSFORMING SAID VIBRATIONS INTO ELECTRICAL OSCILLATIONS OF CORRESPONDING FREQUENCY, YARN VIBRATING MEANS RESPONSIVE TO SAID OSCILLATIONS FOR MAINTAINING THE YARN IN CONTINUOUS VIBRATION AT ITS NATURAL FREQUENCY AS IT PASSES BETWEEN SAID SUPPORTS, CONVERTOR MEANS FOR GENERATING A DIRECT CURRENT VOLTAGE PROPORTIONAL TO SAID FREQUENCY, AND AN ELECTRONIC POTENTIOMETER RESPONSIVE TO SAID VOLTAGE AND CALIBRATED TO READ DIRECTLY IN MASS PER UNIT LENGTH OF THE YARN.
Claim 2
Independent Claim
114 words
AN APPARATUS FOR DETERMINING MASS PER UNIT LENGTH OF YARN OR THE LIKE WHICH COMPRISES TWO SUPPORTS SPACED A FIXED DISTANCE APART, YARN FEEDING MEANS FOR ADVANCING YARN OVER SAID SUPPORTS UNDER CONSTANT TENSION, A PHOTOELECTRICAL CIRCUIT RESPONSIVE TO VIBRATIONS OF THE YARN PASSING BETWEEN SAID SUPPORTS FOR TRANSFORMING SAID VIBRATIONS INTO ELECTRICAL OSCILLATIONS OF CORRESPONDING FREQUENCY, YARN VIBRATING MEANS RESPONSIVE TO SAID OSCILLATIONS FOR MAINTAINING THE YARN IN CONTINUOUS VIBRATION AT ITS NATURAL FREQUENCY AS IT PASSES BETWEEN SAID SUPPORTS, CONVERTOR MEANS FOR GENERATING A DIRECT CURRENT VOLTAGE PROPORTIONAL TO SAID FREQUENCY, AND AN ELECTRONIC POTENTIOMETER RESPONSIVE TO SAID VOLTAGE AND CALIBRATED TO READ DIRECTLY IN MASS PER UNIT LENGTH OF THE YARN.
References Cited (Backward Citations)
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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) | 1959-05-08 | 1959-11-07 | 1960-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-08 | 1963-11-07 | 1964-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-08 | 1967-11-07 | 1968-05-08 | $7700.00 | Window Closed / Lapsed |