Patent US3578210A successfully refreshed from Google Patents.
US3578210A
Expired / Lapsed
US
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Aerosol dispensing container with reserve propellant chambers
Assignee: THOMAS B PITROLFFY SZABO
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Filing: 1970-01-12
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Granted: 1971-05-11
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Expires: 1990-01-12
Abstract
Abstract An aerosol dispensing container of the gas-propelled type which includes a plurality of reserve chambers for the propellant gas which are adapted to sequentially release their contained reserve gas supply as the pressure of the propellant gas in the main chamber drops below a predetermined level.
Inventors
- 👤 Thomas B Pitrolffy-Szabo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:09
CPC Classifications
B; B65; B65D; B65D83/00; B65D83/14; B65D83/60; B65D83/673
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
39 words
A product as defined in claim 1 wherein said reserve chambers include a spring-loaded valve adapted to open and to release substantially the entire contents thereof when the pressure in the next adjacent compartment drops to a predetermined level.
Claim 2
Dependent Claim
22 words
A product as defined in claim 1 wherein said reserve chambers include a diaphragm adapted to rupture at a predetermined pressure differential.
Claim 3
Dependent Claim
14 words
A product as defined in claim 1 wherein said container includes three reserve chambers.
Claim 4
Dependent Claim
12 words
A product as defined in claim 1 wherein said propellant comprises freon.
Claim 5
Dependent Claim
26 words
A product as defined in claim 1 wherein said reserve chambers include check valves whereby said reserve chambers are charged with propellant through said check valves.
References Cited (Backward Citations)
US1959815A
Cited
US3258163A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-10 | 1974-11-09 | 1975-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-10 | 1978-11-09 | 1979-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-10 | 1982-11-09 | 1983-05-11 | $7700.00 | Window Closed / Lapsed |