US3362834A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Defrost indicator for frozen food packages
Assignee: Individual
•
Filing: 1965-05-11
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Granted: 1968-01-09
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Expires: 1985-05-11
Abstract
No abstract record available.
Inventors
- 👤 Charles F Kaye
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:31
CPC Classifications
G; G01; G01K; G01K11/00; G01K11/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
A DEFROST INDICATOR FOR INSERTION INTO FROZEN FOOD PACKAGES, COMPRISING A TUBE HAVING A BORE OF RELATIVELY SMALL DIAMETER, AND HAVING RECESSED CHAMBERS OF RELATIVELY LARGE DIAMETER AT ITS OPPOSITE ENDS; A RESILIENT DIAPHRAGM SECURED IN THE BOTTOM OF ONE OF SAID CHAMBERS AND EXPANDED INTO BULB FORM WITHIN SAID CHAMBER; A FROZEN COLORED LIQUID DISPOSED IN SAID BORE AND SAID EXPANDED DIAPHRAGM BULB; A SEALING DISC SECURED OVER THE MOUTH OF THE BORE IN THE OTHER CHAMBER; SAID SEALING DISC HAVING AN APERTURE COMMUNICATING WITH THE BORE, WHILE THE LIQUID IS FROZEN; AND A LIQUID ABSORBENT DISC SECURED TO THE OUTER SURFACE OF THE SEALING DISC OVER ITS APERTURE, AND ADAPTED TO ABSORB THE COLORED LIQUID WHEN THE LIQUID IS MELTED AND CONVEYED THROUGH SAID APERTURE UPON THE DEFLECTION OF THE RESILIENT DIAPHRAGM THEREBY INDICATING THAT THAWING OF THE FROZEN FOOD TO WHICH THE INDICATOR IS ASSOCIATED HAS OCCURRED.
Claim 2
Dependent Claim
150 words
A DEFROST INDICATOR FOR INSERTION INTO FROZEN FOOD PACKAGES, COMPRISING A TUBE HAVING A BORE OF RELATIVELY SMALL DIAMETER, AND HAVING RECESSED CHAMBERS OF RELATIVELY LARGE DIAMETER AT ITS OPPOSITE ENDS; A RESILIENT DIAPHRAGM SECURED IN THE BOTTOM OF ONE OF SAID CHAMBERS AND EXPANDED INTO BULB FORM WITHIN SAID CHAMBER; A FROZEN COLORED LIQUID DISPOSED IN SAID BORE AND SAID EXPANDED DIAPHRAGM BULB; A SEALING DISC SECURED OVER THE MOUTH OF THE BORE IN THE OTHER CHAMBER; SAID SEALING DISC HAVING AN APERTURE COMMUNICATING WITH THE BORE, WHILE THE LIQUID IS FROZEN; AND A LIQUID ABSORBENT DISC SECURED TO THE OUTER SURFACE OF THE SEALING DISC OVER ITS APERTURE, AND ADAPTED TO ABSORB THE COLORED LIQUID WHEN THE LIQUID IS MELTED AND CONVEYED THROUGH SAID APERTURE UPON THE DEFLECTION OF THE RESILIENT DIAPHRAGM THEREBY INDICATING THAT THAWING OF THE FROZEN FOOD TO WHICH THE INDICATOR IS ASSOCIATED HAS OCCURRED.
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) | 1971-01-08 | 1971-07-10 | 1972-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-08 | 1975-07-10 | 1976-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-08 | 1979-07-10 | 1980-01-09 | $7700.00 | Window Closed / Lapsed |