US3244307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tamper-proof closures
Assignee: WR Grace and Co
•
Filing: 1963-12-27
•
Granted: 1966-04-05
•
Expires: 1983-12-27
Abstract
No abstract record available.
Inventors
- 👤 Edward W Merrill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:00
CPC Classifications
B; B65; B65D; B65D41/00; B65D41/32; B65D41/40; B65D41/42; B65D41/425; B65D2251/00; B65D2251/20; B65D2251/205; Y; Y10; Y10S; Y10S260/00; Y10S260/37
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
A SEALED CONTAINER HAVING AN OPEN MOUTH SURROUNDED BY AN OUTWARDLY EXTENDING SEALING SURFACE, A METALLIC CLOSURE HAVING A MOUTH CLOSING PANEL AND A SURROUNDING DOWNTURNED PERIPHERAL CURL, AN ADHESIVE SEALING SUBSTANCE INTERPOSED BETWEEN SAID SEALING SURFACE AND THE CLOSURE AND ADHERENT TO BOTH CLOSURE AND CONTAINER, THE CURL OF SAID CLOSURE BEING ENFOLDED AND LOCKED ABOUT THE SEALING SURFACE THEREBY SEALING THE CONTAINER AND PREVENTING OPENING UNLESS THE PANEL IS REMOVED HEAD SPACE ABOVE THE CONTAINER CONTENTS AT A SUBATMOSPHERIC PRESSURE, A STEP IN THE INTERIOR FINISH OF SAID CONTAINER, A SUPPORTING DISC SEATED ON SAID STEP, THE SAID DISC AFFORDING SUPPORT AGAINST IMPLOSION OF THE CLOSURE AND CAPABLE, AFTER THE CONTAINER IS OPENED, OF BEING REINSERTED ON ITS SEAT TO FORM A TEMPORARY COVER FOR THE CONTAINER.
Claim 2
Dependent Claim
129 words
A SEALED CONTAINER HAVING AN OPEN MOUTH SURROUNDED BY AN OUTWARDLY EXTENDING SEALING SURFACE, A METALLIC CLOSURE HAVING A MOUTH CLOSING PANEL AND A SURROUNDING DOWNTURNED PERIPHERAL CURL, AN ADHESIVE SEALING SUBSTANCE INTERPOSED BETWEEN SAID SEALING SURFACE AND THE CLOSURE AND ADHERENT TO BOTH CLOSURE AND CONTAINER, THE CURL OF SAID CLOSURE BEING ENFOLDED AND LOCKED ABOUT THE SEALING SURFACE THEREBY SEALING THE CONTAINER AND PREVENTING OPENING UNLESS THE PANEL IS REMOVED HEAD SPACE ABOVE THE CONTAINER CONTENTS AT A SUBATMOSPHERIC PRESSURE, A STEP IN THE INTERIOR FINISH OF SAID CONTAINER, A SUPPORTING DISC SEATED ON SAID STEP, THE SAID DISC AFFORDING SUPPORT AGAINST IMPLOSION OF THE CLOSURE AND CAPABLE, AFTER THE CONTAINER IS OPENED, OF BEING REINSERTED ON ITS SEAT TO FORM A TEMPORARY COVER FOR THE CONTAINER.
References Cited (Backward Citations)
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Cited
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GB308078A
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US2256483A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |