US3884636A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steam sterilizing apparatus
Assignee: BARANOWSKI HANS#PETER
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Filing: 1971-06-11
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Granted: 1975-05-20
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Expires: 1991-06-11
Abstract
Abstract A sterilizing apparatus having interconnected sterilization chamber, a liquid evaporization tank and a liquid storage and condensation tank with said condensation tank located above said sterilization chamber and evaporization tank, communication means controlling the flow of liquid between said condensation tank and a lower end of said evaporization tank which communication is located at a lower level than the lowest level of liquid in said condensation tank during operation of the apparatus, means controlling communication between said sterilizing chamber, a high end of said evaporization tank and a portion of said condensation tank above the highest level of liquid in said condensation tank during operation and a means for maintaining the desired working pressure in said sterilization chamber without requiring the refilling of liquid in the apparatus when being used.
Inventors
- 👤 Willi Knoblauch
- 👤 Hans-Peter Baranowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:04
CPC Classifications
A; A61; A61L; A61L2/00; A61L2/02; A61L2/04; A61L2/06; A61L2/07
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
163 words
Steam sterilizing apparatus comprising a sterilization chamber, a liquid and condensing container located at a higher level than said sterilization chamber, an evaporization container located at a lower level than said liquid and condensing container, means providing communication between said evaporization container and said sterilization chamber being permanently open and having a common point being located at a higher level than the highest level of the liquid in said liquid and condensing container during the operation of the sterilizing apparatus, an interruptable air escape way between said common point and the liquid and condensing container, interruptable communication means between at the one hand a point in the liquid and condensing container being located at a lower level than the lowest level of the liquid in the latter during the operation of the sterilizing apparatus and at the other hand said evaporization container, means for directing the liquid stream towards said evaporization container and separate means for heating a jacket surrounding said sterilization chamber.
Claim 2
Dependent Claim
163 words
Steam sterilizing apparatus comprising a sterilization chamber, a liquid and condensing container located at a higher level than said sterilization chamber, an evaporization container located at a lower level than said liquid and condensing container, means providing communication between said evaporization container and said sterilization chamber being permanently open and having a common point being located at a higher level than the highest level of the liquid in said liquid and condensing container during the operation of the sterilizing apparatus, an interruptable air escape way between said common point and the liquid and condensing container, interruptable communication means between at the one hand a point in the liquid and condensing container being located at a lower level than the lowest level of the liquid in the latter during the operation of the sterilizing apparatus and at the other hand said evaporization container, means for directing the liquid stream towards said evaporization container and separate means for heating a jacket surrounding said sterilization chamber.
Claim 3
Dependent Claim
42 words
Apparatus as described in claim 1, comprising controllable means for introducing steam in said sterilization chamber which means can be controlled to permit the steam to be introduced in said chamber only when the average temperature has reached almost its operation value.
Claim 4
Dependent Claim
40 words
Apparatus according to claim 1, characterized in that the first mentioned communication between the sterilization chamber, the evaporizing tank, and the tank (2) for liquid and condensate comprising pipes (9 - 11), which only exhibit horizontal or upwards directed parts.
Claim 5
Dependent Claim
89 words
Apparatus according to claim 3, characterized in that the pipes (10, 11) parting from the upper portion of the inner hollow chamber of the evaporizinG cylinder (4) join together in a common pipe (9) at a point located before the tank (2) for liquid, by a first shutoff valve (8) being arranged in the common branch, and by a second shutoff valve (5) being arranged in a pipe (6, 7) forming the communication between the lower portion of the interior cavity of the evaporizing tank and the liquid tank.
Claim 6
Dependent Claim
45 words
Apparatus according to claim 4, characterized in that a check valve (48) is arranged in the last mentioned pipe, which control valve is intended to prevent liquid from flowing in the direction from the evaporizing tank (4) to the tank (2) for liquid and condensate.
Claim 7
Dependent Claim
87 words
Apparatus according to claim 4, characterized in that said shutoff valves (5, 8) are actuated by controlling means in such a way that said valves are kept closed during the heating period of the evaporizing cylinder (4) and until the sterilization chamber has reached the desired sterilization temperature, whereafter they open up with a predetermined delay of time, and thus the communication between the sterilization chamber and on one hand the evaporizing tank and on the other hand the tank (2) for liquid and condensate is opened.
Claim 8
Dependent Claim
32 words
Apparatus according to claim 1, characterized in that the evaporizing tank (4) exhibits a greater cubic content than the one required for the maximum volume of liquid to be evaporated for sterilization.
Claim 9
Dependent Claim
24 words
Apparatus according to claim 1, characterized in that the evaporizing tank (4) is a long cylinder occupying an inclined position in the vertical plane.
Claim 10
Dependent Claim
28 words
Apparatus according to claim 8, characterized in that a heating rod is arranged in centric position in the evaporizing cylinder and extending in longitudinal direction in said cylinder.
References Cited (Backward Citations)
US2526974A
Cited
US3431065A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-19 | 1978-11-18 | 1979-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-19 | 1982-11-18 | 1983-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-19 | 1986-11-18 | 1987-05-20 | $7700.00 | Window Closed / Lapsed |