US3933428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for the sterilization of packaging material
Assignee: RIC RESEARCH INVESTMENT Corp
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Filing: 1973-12-04
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Granted: 1976-01-20
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Expires: 1993-12-04
Abstract
Abstract A sterilization apparatus for plastic webbing comprises a chamber containing one or more rollers having a porous surface. Disinfectant is fed through the porous roller surface as the webbing passes thereover, thus sterilizing the surface of the webbing.
Inventors
- 👤 Hermann Egger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:52
CPC Classifications
B; B65; B65B; B65B55/00; B65B55/02; B65B55/04; B65B55/10; B65B55/103
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
220 words
A device for the sterilization of packaging material comprising: a closed sterilization chamber; a plurality of drums rotably mounted within said chamber, each of said drums comprises a hollow external cylinder having a permeable cylindrical surface impregnated with a heated sterilant, said hollow external cylinder enclosing a smaller cylinder, both said external cylinder and said smaller cylinder being coaxially and rigidly attached to a common shaft, said hollow cylinder and said smaller cylinder having a space therebetween; guide means for leading packaging material along said impregnated drum surfaces; overpressurizing means for keeping an overpressure of sterile air within said sterilization chamber to prevent unsterile external atmosphere from penetrating into the interior of said chamber; and means for circulating the heated sterilant within said space which comprises: a stationary distributor having an inlet compartment having an interior and an outlet compartment for the sterilant; a hollow shaft surrounding said common shaft to define a fluid chamber with said common shaft and extending from the interior of said inlet compartment to said space; inlet and outlet apertures in the walls of said hollow shaft corresponding respectively to said inlet compartment and said space to permit the inflow of sterilant to said space; and an axially extending passage within said common shaft to communicate said space with said outlet compartment of said distributor.
Claim 2
Independent Claim
220 words
A device for the sterilization of packaging material comprising: a closed sterilization chamber; a plurality of drums rotably mounted within said chamber, each of said drums comprises a hollow external cylinder having a permeable cylindrical surface impregnated with a heated sterilant, said hollow external cylinder enclosing a smaller cylinder, both said external cylinder and said smaller cylinder being coaxially and rigidly attached to a common shaft, said hollow cylinder and said smaller cylinder having a space therebetween; guide means for leading packaging material along said impregnated drum surfaces; overpressurizing means for keeping an overpressure of sterile air within said sterilization chamber to prevent unsterile external atmosphere from penetrating into the interior of said chamber; and means for circulating the heated sterilant within said space which comprises: a stationary distributor having an inlet compartment having an interior and an outlet compartment for the sterilant; a hollow shaft surrounding said common shaft to define a fluid chamber with said common shaft and extending from the interior of said inlet compartment to said space; inlet and outlet apertures in the walls of said hollow shaft corresponding respectively to said inlet compartment and said space to permit the inflow of sterilant to said space; and an axially extending passage within said common shaft to communicate said space with said outlet compartment of said distributor.
Claim 3
Dependent Claim
27 words
A device according to claim 1, wherein means for reheating the sterilant is connected to said outlet compartment and said inlet compartment to reheat sterilant flowing therebetween.
References Cited (Backward Citations)
US2209759A
Cited
US3170382A
Cited
US3383831A
Cited
US3468286A
Cited
US3513627A
Cited
US3692468A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-19 | 1979-07-21 | 1980-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-19 | 1983-07-21 | 1984-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-19 | 1987-07-21 | 1988-01-20 | $7700.00 | Window Closed / Lapsed |