Patent US3251635A successfully refreshed from Google Patents.
US3251635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid sealing means for stirring apparatus
Assignee: Individual
•
Filing: 1962-08-08
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Granted: 1966-05-17
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Expires: 1982-08-08
Abstract
No abstract record available.
Inventors
- 👤 Edwin D Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:55
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/40; F16J15/34; F16J15/3496
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
FOR USE IN A LABORATORY STIRRING SYSTEM EMBODYING THE USE OF A FLASK HAVING A MOUTH, AN ELONGATE SEALING SLEEVE OF AN ELASTOMER HAVING A TAPERED END FOR INSERTION IN, AND SEALING ENGAGEMENT WITH, THE MOUTH OF A FLASK AND HAVING AN AXIAL BORE THERETHROUGH, A SMOOTH SURFACED STIRRING ROD EXTENDING THROUGH SAID BORE OF THE SLEEVE AND HAVING ROTATABLE ENGAGEMENT WITH THE SURFACE OF THE BORE, THE ROD HAVING A LOWER END EXTENDING BEYOND THE TAPERED END OF THE SLEEVE, AND A SEALING UNIT COMPRISING AT LEAST TWO MEMBERS ENCIRCLING THE ROD AND HAVING ENGAGING SEALING SURFACES, AND ONE OF SAID MEMBERS BEING IN STATIONARY SEALING CONNECTION WITH SAID SLEEVE AND THE OTHER MEMBER BEING IN ENGAGEMENT WITH, AND ROTATING, WITH, THE ROD WHILE BEARING AGAINST THE SAID ONE MEMBER.
Claim 2
Dependent Claim
131 words
FOR USE IN A LABORATORY STIRRING SYSTEM EMBODYING THE USE OF A FLASK HAVING A MOUTH, AN ELONGATE SEALING SLEEVE OF AN ELASTOMER HAVING A TAPERED END FOR INSERTION IN, AND SEALING ENGAGEMENT WITH, THE MOUTH OF A FLASK AND HAVING AN AXIAL BORE THERETHROUGH, A SMOOTH SURFACED STIRRING ROD EXTENDING THROUGH SAID BORE OF THE SLEEVE AND HAVING ROTATABLE ENGAGEMENT WITH THE SURFACE OF THE BORE, THE ROD HAVING A LOWER END EXTENDING BEYOND THE TAPERED END OF THE SLEEVE, AND A SEALING UNIT COMPRISING AT LEAST TWO MEMBERS ENCIRCLING THE ROD AND HAVING ENGAGING SEALING SURFACES, AND ONE OF SAID MEMBERS BEING IN STATIONARY SEALING CONNECTION WITH SAID SLEEVE AND THE OTHER MEMBER BEING IN ENGAGEMENT WITH, AND ROTATING, WITH, THE ROD WHILE BEARING AGAINST THE SAID ONE MEMBER.
References Cited (Backward Citations)
US2218839A
Cited
US2669370A
Cited
US2829931A
Cited
US2787448A
Cited
US2816743A
Cited
US2918264A
Cited
US2907189A
Cited
US2901295A
Cited
US3084943A
Cited
US3006494A
Cited
US2979925A
Cited
US3169014A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-16 | 1969-11-15 | 1970-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-16 | 1973-11-15 | 1974-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-16 | 1977-11-15 | 1978-05-17 | $7700.00 | Window Closed / Lapsed |