US2651586A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Constant viscosity method of lining container closures
Assignee: Dewey and Almy Chemical Co
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Filing: 1949-03-01
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Granted: 1953-09-08
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Expires: 1969-03-01
Abstract
No abstract record available.
Inventors
- 👤 Henry E Cooper
- 👤 Dunbar L Shanklin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:31
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/68; B29C70/78; B29C70/80; Y; Y10; Y10S; Y10S264/00; Y10S264/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
THE PROCESS OF LINING CONTAINER CLOSURE WITH CONTROLLED UNIFORM AMOUNTS OF A HEATED, PASTE-TYPE LINING COMPOUND, WHICH IS CHARACTERIZED BY A LARGE CHANGE IN VISCOSITY WITH A SMALL CHANGE IN TEMPERATURE, WHICH INCLUDES MAINTAINING A LARGE VOLUME OF THE COMPOUND AT A SUBSTANTIALLY UNIFORM VISCOSITY BY RECIRCULATING THE COMPOUND THROUGH A CONDUIT SYSTEM BY MEANS OF A POSITIVE DISPLACEMENT PUMP, ADJUSTING THE SPEED AND THE DELIVERY PRESSURE OF THE PUMP TO SECURE THE RELEASE OF THE HEAT EQUIVALENT OF THE WORK PERFORMED ON THE COMPOUND AS SENSIBLE HEAT WITHIN THE COMPOUND IN SUCH AMOUNT AND AT SUCH A RATE THAT THE COMPOUND BEING CIRCULATED IS MAINTAINED AT A SUBSTANTIALLY UNIFORM ELEVATED TEMPERATURE, INTERMITTENYLY DISCHARGING A MINOR FRACTION ONLY OF SAID CIRCULATING COMPOUND AT A SUBSTANTIALLY UNIFORM RATE
Claim 2
Dependent Claim
127 words
THE PROCESS OF LINING CONTAINER CLOSURE WITH CONTROLLED UNIFORM AMOUNTS OF A HEATED, PASTE-TYPE LINING COMPOUND, WHICH IS CHARACTERIZED BY A LARGE CHANGE IN VISCOSITY WITH A SMALL CHANGE IN TEMPERATURE, WHICH INCLUDES MAINTAINING A LARGE VOLUME OF THE COMPOUND AT A SUBSTANTIALLY UNIFORM VISCOSITY BY RECIRCULATING THE COMPOUND THROUGH A CONDUIT SYSTEM BY MEANS OF A POSITIVE DISPLACEMENT PUMP, ADJUSTING THE SPEED AND THE DELIVERY PRESSURE OF THE PUMP TO SECURE THE RELEASE OF THE HEAT EQUIVALENT OF THE WORK PERFORMED ON THE COMPOUND AS SENSIBLE HEAT WITHIN THE COMPOUND IN SUCH AMOUNT AND AT SUCH A RATE THAT THE COMPOUND BEING CIRCULATED IS MAINTAINED AT A SUBSTANTIALLY UNIFORM ELEVATED TEMPERATURE, INTERMITTENYLY DISCHARGING A MINOR FRACTION ONLY OF SAID CIRCULATING COMPOUND AT A SUBSTANTIALLY UNIFORM RATE
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) | 1956-09-07 | 1957-03-09 | 1957-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-07 | 1961-03-09 | 1961-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-07 | 1965-03-09 | 1965-09-08 | $7700.00 | Window Closed / Lapsed |