Patent US3333100A successfully refreshed from Google Patents.
US3333100A
Expired / Lapsed
US
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Coating thickness measuring apparatus wherein a scanning electron beam produces characteristic x-rays detected by plural detectors
Assignee: United States Steel Corp
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Filing: 1964-07-06
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Granted: 1967-07-25
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Expires: 1984-07-06
Abstract
No abstract record available.
Inventors
- 👤 Frank F Cilyo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:09
CPC Classifications
G; G01; G01N; G01N23/00; G01N23/02; G01N23/06; G01N23/16; G01N23/083; G01N23/22; G01N23/225
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
APPARATUS FOR MEASURING THE THICKNESS OF A COATING ON A LONGITUDINALLY MOVING STRIP AT A PLURALITY OF FIXED POSITIONS ACROSS THE WIDTH THEREOF WHICH COMPRISES A CHAMBER THROUGH WHICH THE STRIP PASSES, MEANS FOR PRODUCING A VACUUM IN SAID CHAMBER, MEANS IN CHAMBER SPACED FROM THE COATED SIDE OF SAID STRIP FOR PORDUCING A NARROW BEAM OF ELECTRONS, A PAIR OF PARALLEL BEAM DEFLECTOR PLATES BETWEEN SAID LAST NAMED MEANS AND SAID STRIP, MEANS FOR SEQUENTIALLY CHANGING THE POLARITY OF ONE OF SAID DEFLECTOR PLATES WITH RESPECT TO THE OTHER DEFLECTOR PLATE TO CAUSE THE ELECTRON BEAM TO TRAVERSE THE WIDTH OF THE STRIP, A PLURALITY OF X-RAY DETECTORS POSITIONED TO DETECT CHARACTERISTIC X-RAYS SEQUENTIALLY FROM SAID STRIP AT DIFFERENT TRANSVERSE POSITIONS OF THE STRIP, AND MEANS CONNECTED TO EACH OF SAID DETECTORS TO MEASURE THE THICKNESS OF THE COATING AT THE RESPECTIVE TRANSVERSE POSITIONS.
Claim 2
Dependent Claim
145 words
APPARATUS FOR MEASURING THE THICKNESS OF A COATING ON A LONGITUDINALLY MOVING STRIP AT A PLURALITY OF FIXED POSITIONS ACROSS THE WIDTH THEREOF WHICH COMPRISES A CHAMBER THROUGH WHICH THE STRIP PASSES, MEANS FOR PRODUCING A VACUUM IN SAID CHAMBER, MEANS IN CHAMBER SPACED FROM THE COATED SIDE OF SAID STRIP FOR PORDUCING A NARROW BEAM OF ELECTRONS, A PAIR OF PARALLEL BEAM DEFLECTOR PLATES BETWEEN SAID LAST NAMED MEANS AND SAID STRIP, MEANS FOR SEQUENTIALLY CHANGING THE POLARITY OF ONE OF SAID DEFLECTOR PLATES WITH RESPECT TO THE OTHER DEFLECTOR PLATE TO CAUSE THE ELECTRON BEAM TO TRAVERSE THE WIDTH OF THE STRIP, A PLURALITY OF X-RAY DETECTORS POSITIONED TO DETECT CHARACTERISTIC X-RAYS SEQUENTIALLY FROM SAID STRIP AT DIFFERENT TRANSVERSE POSITIONS OF THE STRIP, AND MEANS CONNECTED TO EACH OF SAID DETECTORS TO MEASURE THE THICKNESS OF THE COATING AT THE RESPECTIVE TRANSVERSE POSITIONS.
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) | 1970-07-24 | 1971-01-23 | 1971-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-24 | 1975-01-23 | 1975-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-24 | 1979-01-23 | 1979-07-25 | $7700.00 | Window Closed / Lapsed |