US3719425A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for measuring the dimension of an object
Assignee: Ernst Leitz Wetzlar GmbH
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Filing: 1970-05-15
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Granted: 1973-03-06
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Expires: 1990-05-15
Abstract
Abstract A METHOD OF MEASURING THE DIMENSION OF AN OBJECT, FOR EXAMPLE THE DIAMETER OF SPINNING FIBERS, COMPRISES THE STEPS OF EMPLOYING A TOPLER OPTICAL ARRANGEMENT AND INTRODUCING THE OBJECT INTO A BEAM OF PARALLEL LIGHT RAYS. THE TOPLER OPTICAL ARRANGEMENT COMPRISES A LIGHT SOURCE TOGETHER WITH OPTICAL MEANS FOR GENERATING A BEAM OF PARALLEL LIGHT RAYS AND A BEAM TRAP FOR ABSORBING THOSE PARALLEL RAYS. THE LIGHT RAYS REFLECTED FROM THE PARALLEL PATH BY THE OBJECT ARE CONDUCTED TO A PHOTOELECTRIC RECEIVER WHICH PROVIDES AN ELECTRICAL OUTPUT SIGNAL RESPONSIVE TO THE INTENSITY OF THE DEFLECTED LIGHT RAYS. THIS INTENSITY BEING A MEASURE OF THE DIMENSION OF THE OBJECT.
Inventors
- 👤 L Leitz
- 👤 W Horn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:14
CPC Classifications
G; G01; G01B; G01B11/00; G01B11/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-05 | 1976-09-04 | 1977-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-05 | 1980-09-04 | 1981-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-05 | 1984-09-04 | 1985-03-06 | $7700.00 | Window Closed / Lapsed |