Patent US3206027A successfully refreshed from Google Patents.
US3206027A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for detecting loss of vacuum in sealed containers
Assignee: Continental Can Co Inc
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Filing: 1963-05-27
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Granted: 1965-09-14
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Expires: 1983-05-27
Abstract
No abstract record available.
Inventors
- 👤 Bailey Ralph Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:17
CPC Classifications
G; G01; G01M; G01M3/00; G01M3/40; B; B65; B65B; B65B57/00; B65B57/02; B65B57/04
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
192 words
A SYSTEM FOR DETERMINING THE DEGREE OF VARIATION IN HEIGHT OF PORTIONS OF METAL CLOSURE MEMBERS ON SEALED CONTAINERS DUE TO VARIATION IN VACUUM THEREIN COMPRISING: (A) A DETECTING TRANSDUCER HAVING A MAGNETIC CIRCUIT INCLUDING A MAGNETIC CORE ADAPTED TO BE ASSOCIATED WITH SAID CLOSURE MEMBERS, ONE BY ONE, WHERENY THE RELUCTANCE OF THE MAGNETIC CIRCUIT OF SAID CORE IS VARIED DEPENDING UPON THE POSITION WITH RESPECT THERETO OF SAID PORTION OF A CLOSURE MEMBER, (B) A REFERENCE TRANSDUCER HAVING A MAGNETIC CORE SUBSTANTIALLY EQUIVALENT TO SAID MAGNTIC CORE OF SAID DETECTING TRANSDUCER, (C) FIRST AND SECOND WINDING MEANS ON THE MAGNETIC CORE OF EACH OF SAID TRANSDUCERS, (D) MEANS FOR ENERGIZING SAID FIRST WINDING MEANS FROM AN ALTERNATING CURRENT SOURCE WHEREBY AN ALTERNATING VOLTAGE IS INDUCED IN THE RESPECTIVE SECOND WINDING MEANS ACCORDING TO THE R ELUCTANCE OF THE RESPECTIVE MAGNETIC CIRCUIT OF EACH CORE, (E) CIRCUIT MEANS CONNECTING SAID SECOND WINDING MEANS IN A BRIDGE CIRCUIT, AND (F) MEANS CONNECTED ACROSS SAID BRIDGE CIRCUIT AND RESPONSIVE TO THE ALTERNATING VOLTAGE THEREACROS RESULTING FROM THE PRESENCE OF SAID PORTION OF A CLOSURE MEMBER ADJACENT THE MAGNETIC CORE OF SAID DETECTING TRANSDUCER.
Claim 2
Independent Claim
192 words
A SYSTEM FOR DETERMINING THE DEGREE OF VARIATION IN HEIGHT OF PORTIONS OF METAL CLOSURE MEMBERS ON SEALED CONTAINERS DUE TO VARIATION IN VACUUM THEREIN COMPRISING: (A) A DETECTING TRANSDUCER HAVING A MAGNETIC CIRCUIT INCLUDING A MAGNETIC CORE ADAPTED TO BE ASSOCIATED WITH SAID CLOSURE MEMBERS, ONE BY ONE, WHERENY THE RELUCTANCE OF THE MAGNETIC CIRCUIT OF SAID CORE IS VARIED DEPENDING UPON THE POSITION WITH RESPECT THERETO OF SAID PORTION OF A CLOSURE MEMBER, (B) A REFERENCE TRANSDUCER HAVING A MAGNETIC CORE SUBSTANTIALLY EQUIVALENT TO SAID MAGNTIC CORE OF SAID DETECTING TRANSDUCER, (C) FIRST AND SECOND WINDING MEANS ON THE MAGNETIC CORE OF EACH OF SAID TRANSDUCERS, (D) MEANS FOR ENERGIZING SAID FIRST WINDING MEANS FROM AN ALTERNATING CURRENT SOURCE WHEREBY AN ALTERNATING VOLTAGE IS INDUCED IN THE RESPECTIVE SECOND WINDING MEANS ACCORDING TO THE R ELUCTANCE OF THE RESPECTIVE MAGNETIC CIRCUIT OF EACH CORE, (E) CIRCUIT MEANS CONNECTING SAID SECOND WINDING MEANS IN A BRIDGE CIRCUIT, AND (F) MEANS CONNECTED ACROSS SAID BRIDGE CIRCUIT AND RESPONSIVE TO THE ALTERNATING VOLTAGE THEREACROS RESULTING FROM THE PRESENCE OF SAID PORTION OF A CLOSURE MEMBER ADJACENT THE MAGNETIC CORE OF SAID DETECTING TRANSDUCER.
Claim 3
Dependent Claim
86 words
THE INVENTION, AS SET FORTH IN CLAIM 1, WHEREIN THE SYSTEM INCLUDES: (A) MEANS FOR FEEDING THE SEALED CONTAINERS, ONE BY ONE, PAST THE DETECTING TRANSDUCER, (B) MEAND FOR REMOVING A SELECTED CONTAINER FROM SAID FEEDING MEANS, AND (C) MEANS RESPONSIVE ONLY TO THE EXISTENCE OF A PREDETERMINED VOLTAGE ACROSS THE BRIDGE CIRCUIT FOR A PREDETERMINED TIME FOR OPERATING SAID CONTAINER REMOVING MEANS TO REMOVE A CONTAINER HAVING THE HEIGHT OF THE PORTION OF THE CLOSURE MEMBER VARYING WITH THE VACUUM THEREIN ABOVE A PREDETERMINED HEIGHT.
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) | 1968-09-13 | 1969-03-15 | 1969-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-13 | 1973-03-15 | 1973-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-13 | 1977-03-15 | 1977-09-14 | $7700.00 | Window Closed / Lapsed |