US3137160A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus to determine vacuum in sealed containers
Assignee: OI Glass Inc
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Filing: 1962-01-05
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Granted: 1964-06-16
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Expires: 1982-01-05
Abstract
No abstract record available.
Inventors
- 👤 Richard G Mathias
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:43
CPC Classifications
G; G01; G01M; G01M3/00; G01M3/40; G01M3/02; G01M3/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
APPARATUS FOR INDICATING THE PRESSURE CONDITIONS WITHIN SEALED CONTAINERS HAVING MAGNETICALLY CONDUCTING END CLOSURES, COMPRISING A SUPPORT, A GENERALLY U-SHAPED ID MAGNET CARRIED BY SAID SUPPORT, THE DISTANCE BETWEEN THE POLE FACES OF SAID MAGNET APPROXIMATING THE RADIUS OF THE END CLOSURE, A CIRCULAR RECESS FORMED IN THE BOTTOM OF SAID SUPPORT WITH ONE LEG OF SAID MAGNET TERMINATING IN ALIGNMENT WITH THE TOP SURFACE OF SAID RECESS, A HALL GENERATOR PROBE POSITIONED BENEATH SAID ONE LEG WITHIN SAID RECESS, AND VOLTAGE MEASURING MEANS CONNECTED TO SAID PROBE FOR PROVIDING AN INDICATION OF THE FLUX DENSITY OF THE MAGNETIC FIELD FORMED BETWEEN SAID ONE LEG OF SAID MAGNET AND A CONTAINER CLOSURE OVER WHICH THE SUPPORT IS PLACED.
Claim 2
Dependent Claim
118 words
APPARATUS FOR INDICATING THE PRESSURE CONDITIONS WITHIN SEALED CONTAINERS HAVING MAGNETICALLY CONDUCTING END CLOSURES, COMPRISING A SUPPORT, A GENERALLY U-SHAPED ID MAGNET CARRIED BY SAID SUPPORT, THE DISTANCE BETWEEN THE POLE FACES OF SAID MAGNET APPROXIMATING THE RADIUS OF THE END CLOSURE, A CIRCULAR RECESS FORMED IN THE BOTTOM OF SAID SUPPORT WITH ONE LEG OF SAID MAGNET TERMINATING IN ALIGNMENT WITH THE TOP SURFACE OF SAID RECESS, A HALL GENERATOR PROBE POSITIONED BENEATH SAID ONE LEG WITHIN SAID RECESS, AND VOLTAGE MEASURING MEANS CONNECTED TO SAID PROBE FOR PROVIDING AN INDICATION OF THE FLUX DENSITY OF THE MAGNETIC FIELD FORMED BETWEEN SAID ONE LEG OF SAID MAGNET AND A CONTAINER CLOSURE OVER WHICH THE SUPPORT IS PLACED.
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) | 1967-06-16 | 1967-12-16 | 1968-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-16 | 1971-12-16 | 1972-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-16 | 1975-12-16 | 1976-06-16 | $7700.00 | Window Closed / Lapsed |