Patent US3583604A successfully refreshed from Google Patents.
US3583604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aerosol valve
Assignee: Novartis Corp
•
Filing: 1969-07-25
•
Granted: 1971-06-08
•
Expires: 1989-07-25
Abstract
Abstract An aerosol dispensing unit of the type wherein the propellant and the material to be dispensed are kept separate until aspiration. The unit has an outer container and an inner cartridge. A valve with a pushbutton is mounted on the inner cartridge. A double dip tube extends from the valve through the inner cartridge into the outer container. The first of the tubes connects to a first passageway through the valve into the pushbutton. A second passageway extends from the inner cartridge through the valve into the pushbutton. The second tube is part of an air return passageway which relieves the vacuum in the outer container.
Inventors
- 👤 Jean Marand
- 👤 Marvin L Thornton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:01
CPC Classifications
B; B65; B65D; B65D83/00; B65D83/14; B65D83/36; B65D83/32; B65D83/60; B65D83/66
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
209 words
An aerosol dispensing unit comprising an outer container containing the material to be dispensed; an inner cartridge containing the propellant and sealingly seated in said outer container; a valve portion having a pushbutton attached thereto, said valve portion comprising a body having a recess and a valve stem positioned in said recess; means for sealingly attaching said valve portion to said inner cartridge; a first dip tube sealingly attached to said valve portion and extending through and sealed to said inner cartridge; a second dip tube sealingly attached to said valve portion, said second dip tube extending adjacent to the bottom of said outer container; a first flow passage from said inner cartridge through said valve portion to said pushbutton; a second flow passage from said second dip tube through said valve portion to said pushbutton, said second flow passage being sealingly separate from said first flow passage; an air return passage through said pushbutton, said valve portion and said first dip tube into said outer container, said air return passage being sealingly separate from said first and second flow passages; and obturating means in said valve portion for sealing each of said passages, said obturating means being operable to open said passages upon the depression of said pushbutton.
Claim 2
Dependent Claim
209 words
An aerosol dispensing unit comprising an outer container containing the material to be dispensed; an inner cartridge containing the propellant and sealingly seated in said outer container; a valve portion having a pushbutton attached thereto, said valve portion comprising a body having a recess and a valve stem positioned in said recess; means for sealingly attaching said valve portion to said inner cartridge; a first dip tube sealingly attached to said valve portion and extending through and sealed to said inner cartridge; a second dip tube sealingly attached to said valve portion, said second dip tube extending adjacent to the bottom of said outer container; a first flow passage from said inner cartridge through said valve portion to said pushbutton; a second flow passage from said second dip tube through said valve portion to said pushbutton, said second flow passage being sealingly separate from said first flow passage; an air return passage through said pushbutton, said valve portion and said first dip tube into said outer container, said air return passage being sealingly separate from said first and second flow passages; and obturating means in said valve portion for sealing each of said passages, said obturating means being operable to open said passages upon the depression of said pushbutton.
Claim 3
Dependent Claim
22 words
An aerosol dispensing unit as claimed in claim 1 wherein said second dip tube is located concentrically with said first dip tube.
Claim 4
Dependent Claim
42 words
An aerosol dispensing unit as claimed in claim 2 wherein said flow passages comprise passageways through both said body and said valve stem, and saId obturating means sealing said flow passages comprise flexible gaskets positioned between said body and said valve stem.
Claim 5
Dependent Claim
30 words
An aerosol dispensing unit as claimed in claim 3 wherein said obturating means sealing said air return passage comprises a flexible gasket positioned between said pushbutton and said valve stem.
Claim 6
Dependent Claim
23 words
An aerosol dispensing unit as claimed in claim 1 wherein said first dip tube extends to near the bottom of said outer container.
Claim 7
Dependent Claim
33 words
An aerosol dispensing unit as claimed in claim 5 wherein the end of said first dip tube extends to within one-half inch to 1 inch of the end of said second dip tube.
Claim 8
Dependent Claim
35 words
An aerosol dispensing unit as claimed in claim 1 wherein said outer container has a flexible bag therein containing the material to be dispensed, said flexible bag being sealingly attached to said second dip tube.
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) | 1974-06-07 | 1974-12-07 | 1975-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-07 | 1978-12-07 | 1979-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-07 | 1982-12-07 | 1983-06-08 | $7700.00 | Window Closed / Lapsed |