Patent US6402251B1 successfully refreshed from Google Patents.
US4239730A
Expired / Lapsed
US
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Autoclave apparatus for sterilizing objects
Assignee: Electrolux AB
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Filing: 1978-07-31
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Granted: 1980-12-16
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Expires: 1998-07-31
Abstract
Abstract An autoclave for treating products, such as sterilizing cans and ampoules, the apparatus having a chamber into which a supply conduit is connected provided with a medium, such as steam, and a further supply conduit provided with at least one control medium, for example compressed air. The apparatus is also provided with a discharge conduit and a vent conduit. The apparatus and method achieves the intended sterilization of the products by operating the system as near as possible to the temperature tolerance of the plastic packaging of the products being treated.
Inventors
- 👤 Hans A. Fahlvik
- 👤 Kurt E. Sandquist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:39
CPC Classifications
A; A61; A61L; A61L2/00; A61L2/24
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
145 words
In an autoclave for sterilizing objects comprising a treatment chamber, a supply conduit for steam, a supply conduit for compressed air, a discharge conduit, and a vent conduit, said autoclave being provided with a control system having a plurality of adjusting controlling valves, each of said adjusting controlling valves being operative with a respective steam supply conduit, compressed air supply conduit, discharge conduit and vent conduit whereby said steam supply conduit is opened for heating of said chamber with the objects therein to sterilizing temperatures, whereupon before the sterilizing period occurs a first valve in the vent conduit and a second valve in the compressed air conduit are opened so that initially only the steam is supplied to said chamber until a given condition has been reached therein, said steam being thereafter replaced by means of a mixture of said steam and said compressed air.
Claim 2
Dependent Claim
145 words
In an autoclave for sterilizing objects comprising a treatment chamber, a supply conduit for steam, a supply conduit for compressed air, a discharge conduit, and a vent conduit, said autoclave being provided with a control system having a plurality of adjusting controlling valves, each of said adjusting controlling valves being operative with a respective steam supply conduit, compressed air supply conduit, discharge conduit and vent conduit whereby said steam supply conduit is opened for heating of said chamber with the objects therein to sterilizing temperatures, whereupon before the sterilizing period occurs a first valve in the vent conduit and a second valve in the compressed air conduit are opened so that initially only the steam is supplied to said chamber until a given condition has been reached therein, said steam being thereafter replaced by means of a mixture of said steam and said compressed air.
Claim 3
Dependent Claim
95 words
An arrangement as set forth in claim 1 further comprising a top interior wall in said chamber and a plurality of spray nozzles mounted adjacent to said top interior wall of said chamber, and a conduit having a valve being provided for supply of water to said autoclave, said control system being arranged during the exchange of steam for a mixture of steam and compressed air to open said valve in said water conduit for supply of a small quantity of water to said spray nozzle adjacent to said top interior wall of said chamber.
Claim 4
Dependent Claim
30 words
An autoclave as claimed in claim 1 further comprising a conduit having spaced nozzles being located in the bottom of said chamber for supplying steam and air to said chamber.
Claim 5
Dependent Claim
48 words
An autoclave as claimed in claim 1 wherein said steam and compressed air supply conduits, discharge conduit and vent conduit and the control system have combined means for ensuring a continuous flow of air and/or steam through said chamber during sterilization depending on the pressure and temperature therein.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-12-16 | 1984-06-16 | 1984-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-16 | 1988-06-16 | 1988-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-16 | 1992-06-16 | 1992-12-16 | $7700.00 | Window Closed / Lapsed |