US3211349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aerosol dispenser with flexible dip tube
Assignee: Aerosol Techniques Inc
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Filing: 1963-05-15
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Granted: 1965-10-12
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Expires: 1983-05-15
Abstract
No abstract record available.
Inventors
- 👤 Samuel B Prussin
- 👤 Presant Fred
- 👤 Herman R Shepherd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:04
CPC Classifications
B; B65; B65D; B65D83/00; B65D83/14; B65D83/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
231 words
IN AN AEROSOL DISPENSER FOR USE WITH A THREE PHASE SYSTEM COMPRISING A VAPOR PHASE, A LIQUID PHASE TO BE DISPENSED, A LIQUID PROPELLENT PHASE OF A DIFFERENT SPECIFIC GRAVITY THAN THE LIQUID PHASE TO BE DISPENSED AND SUFFICIENTLY IMMISCIBLE WITH THE LIQUID PHASE TO BE DISPENSED SO THAT TWO LIQUID LAYERS ARE PRESENT, WHICH DISPENSER INCLUDES A CONTAINER AND A VALVE MEMBER HAVING A PASSAGEWAY THERETHROUGH PROVIDING COMMUNICATION BETWEEN THE INTERIOR AND EXTERIOR OF SAID CONTAINER, THE IMPROVEMENT WHICH COMPRISES A FLEXIBLE DIP TUBE ATTACHED THE VALVE COMMUNICATING WITH THE PASSAGEWAY THROUGH THE VALVE MEMBER, A FLOAT CONNECTED TO THE DIP TUBE, THE FLOAT HAVING A PASSAGEWAY THERETHROUGH COMMUNICATING AT ONE END ONLY WITH THE DIP TUBE AND AT THE OTHER END ONLY WITH THE LIQUID PHASE TO BE DISPENSED TO FORM AN INLET PORT FOR THE LIQUID PHASE TO BE DISPENSED, THE DIP TUBE BEING OF A LENGTH AT LEAST SUBSTANTIALLY EQUAL TO THE DISTANCE BETWEEN THE VALVE MEMBER AND THE PORTION OF THE CONTAINER MOST REMOTE FROM THE VALVE MEMBER, THE FLOAT HAVING A SPECIFIC GRAVITY GREATER THAN ONE OF THE LIQUID PHASES AND LESS THAN THE OTHER OF THE LIQUID PHASES WHEREBY THE FLOAT IS SUSPENDED AT THE INTERFACE OF THE LIQUID PHASES, AND THE INLET PORT OF THE FLOAT DISPOSED SUCH THAT IT IS ALWAYS AND ONLY IN COMMUNICATION WITH THE LIQUID PHASE TO BE DISPENSED.
Claim 2
Dependent Claim
231 words
IN AN AEROSOL DISPENSER FOR USE WITH A THREE PHASE SYSTEM COMPRISING A VAPOR PHASE, A LIQUID PHASE TO BE DISPENSED, A LIQUID PROPELLENT PHASE OF A DIFFERENT SPECIFIC GRAVITY THAN THE LIQUID PHASE TO BE DISPENSED AND SUFFICIENTLY IMMISCIBLE WITH THE LIQUID PHASE TO BE DISPENSED SO THAT TWO LIQUID LAYERS ARE PRESENT, WHICH DISPENSER INCLUDES A CONTAINER AND A VALVE MEMBER HAVING A PASSAGEWAY THERETHROUGH PROVIDING COMMUNICATION BETWEEN THE INTERIOR AND EXTERIOR OF SAID CONTAINER, THE IMPROVEMENT WHICH COMPRISES A FLEXIBLE DIP TUBE ATTACHED THE VALVE COMMUNICATING WITH THE PASSAGEWAY THROUGH THE VALVE MEMBER, A FLOAT CONNECTED TO THE DIP TUBE, THE FLOAT HAVING A PASSAGEWAY THERETHROUGH COMMUNICATING AT ONE END ONLY WITH THE DIP TUBE AND AT THE OTHER END ONLY WITH THE LIQUID PHASE TO BE DISPENSED TO FORM AN INLET PORT FOR THE LIQUID PHASE TO BE DISPENSED, THE DIP TUBE BEING OF A LENGTH AT LEAST SUBSTANTIALLY EQUAL TO THE DISTANCE BETWEEN THE VALVE MEMBER AND THE PORTION OF THE CONTAINER MOST REMOTE FROM THE VALVE MEMBER, THE FLOAT HAVING A SPECIFIC GRAVITY GREATER THAN ONE OF THE LIQUID PHASES AND LESS THAN THE OTHER OF THE LIQUID PHASES WHEREBY THE FLOAT IS SUSPENDED AT THE INTERFACE OF THE LIQUID PHASES, AND THE INLET PORT OF THE FLOAT DISPOSED SUCH THAT IT IS ALWAYS AND ONLY IN COMMUNICATION WITH THE LIQUID PHASE TO BE DISPENSED.
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) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |