US3393799A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for measuring the thickness of dielectric members
Assignee: OI Glass Inc
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Filing: 1966-12-21
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Granted: 1968-07-23
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Expires: 1986-12-21
Abstract
No abstract record available.
Inventors
- 👤 Larry J Schmersal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:40
CPC Classifications
B; B07; B07C; B07C5/00; B07C5/04; B07C5/12; B07C5/122; B07C5/128
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
APPARATUS FOR MEASURING THE THICKNESS OF AN ARTICLE FORMED OF A DIELECTRIC MATERIAL COMPRISING, MEANS FOR MOVING THE ARTICLE IN A REGULAR PATTERN, AT LEAST ONE INSPECTION HEAD, MEANS CONNECTED TO SAID HEAD FOR MAINTAINING SAID HEAD AT A FIXED SPACING FROM THE MOVING ARTICLE, SAID HEAD COMPRISING AN ANNULAR ANTENNA FOR ESTABLISHING A RADIO FREQUENCY FIELD IN FRONT OF THE HEAD AND EXTENDING OUTWARDLY THEREFROM IN THE DIRECTION OF THE ARTICLE POSITIONED ADJACENT THERETO, A PROBE POSITIONED COAXIALLY OF SAID ANNULAR ANTENNA AND ELECTRICALLY INSULATED THEREFROM, THE OUTER END OF SAID PROBE EXTENDING INTO THE FIELD ADJACENT THE ARTICLE, AND VOLTAGE MEASURING MEANS CONNECTED TO SAID PROBE FOR MEASURING THE VOLTAGE INDUCED IN THE PROBE AS AN INDEX OF THE THICKNESS OF THAT PORTION OF THE ARTICLE IMMEDIATELY IN FRONT OF THE HEAD.
Claim 2
Dependent Claim
134 words
APPARATUS FOR MEASURING THE THICKNESS OF AN ARTICLE FORMED OF A DIELECTRIC MATERIAL COMPRISING, MEANS FOR MOVING THE ARTICLE IN A REGULAR PATTERN, AT LEAST ONE INSPECTION HEAD, MEANS CONNECTED TO SAID HEAD FOR MAINTAINING SAID HEAD AT A FIXED SPACING FROM THE MOVING ARTICLE, SAID HEAD COMPRISING AN ANNULAR ANTENNA FOR ESTABLISHING A RADIO FREQUENCY FIELD IN FRONT OF THE HEAD AND EXTENDING OUTWARDLY THEREFROM IN THE DIRECTION OF THE ARTICLE POSITIONED ADJACENT THERETO, A PROBE POSITIONED COAXIALLY OF SAID ANNULAR ANTENNA AND ELECTRICALLY INSULATED THEREFROM, THE OUTER END OF SAID PROBE EXTENDING INTO THE FIELD ADJACENT THE ARTICLE, AND VOLTAGE MEASURING MEANS CONNECTED TO SAID PROBE FOR MEASURING THE VOLTAGE INDUCED IN THE PROBE AS AN INDEX OF THE THICKNESS OF THAT PORTION OF THE ARTICLE IMMEDIATELY IN FRONT OF THE HEAD.
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) | 1971-07-23 | 1972-01-22 | 1972-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-23 | 1976-01-22 | 1976-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-23 | 1980-01-22 | 1980-07-23 | $7700.00 | Window Closed / Lapsed |