US5009682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for degassing fluids
Assignee: Storz Medical AG
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Filing: 1989-12-22
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Granted: 1991-04-23
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Expires: 2009-12-22
Abstract
Abstract An apparatus for degassing fluids uses a pressure-resistant container, in which the fluid to be degassed is stored and in which low pressure for carrying out the degassing process is produced. The apparatus further includes a supply vessel, containing the fluid to be degassed, which surrounds the pressure-resistant container; and a valve connecting the container and the supply vessel. Connected to the pressure-resistant container in such a manner that fluid can flow is a piston/cylinder unit, the working piston of which opens or closes the valve due to the low pressure in the container in such a manner that the fluid flows in from a fluid supply surrounding the pressure-resistant container and the separated gas escapes through the container opening.
Inventors
- 👤 Ulrich Hagelauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:56
CPC Classifications
B; B01; B01D; B01D19/00; B01D19/0063
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
140 words
An apparatus for degassing fluids comprising, a pressure-resistant container for storing a fluid to be degassed; a low pressure producing means for producing a low pressure in the pressure-resistant container for carrying out a degassing of fluids; a supply vessel for supplying the fluid to be degassed to the pressure-resistant container, the supply vessel surrounding the pressure-resistant container; a valve for connecting the pressure-resistant container to the supply vessel at a valve opening, the valve having open and closed positions; and a piston/cylinder unit having a working piston for moving the valve between the opened and closed positions due to a pressure differential across the working piston resulting from the low pressure in the pressure-resistant container so that fluid to be degassed flows into the pressure-resistant container from the surrounding supply vessel and separated gas escapes through the valve opening.
Claim 2
Independent Claim
140 words
An apparatus for degassing fluids comprising, a pressure-resistant container for storing a fluid to be degassed; a low pressure producing means for producing a low pressure in the pressure-resistant container for carrying out a degassing of fluids; a supply vessel for supplying the fluid to be degassed to the pressure-resistant container, the supply vessel surrounding the pressure-resistant container; a valve for connecting the pressure-resistant container to the supply vessel at a valve opening, the valve having open and closed positions; and a piston/cylinder unit having a working piston for moving the valve between the opened and closed positions due to a pressure differential across the working piston resulting from the low pressure in the pressure-resistant container so that fluid to be degassed flows into the pressure-resistant container from the surrounding supply vessel and separated gas escapes through the valve opening.
Claim 3
Dependent Claim
30 words
An apparatus according to claim 1, wherein the valve opening is placed at the highest point in the container and a mechanical means connects the working piston to the valve.
Claim 4
Dependent Claim
14 words
An apparatus according to claim 2, wherein said mechanical means is a piston rod.
Claim 5
Dependent Claim
24 words
An apparatus according to claim 2, wherein the mechanical means for transmitting force between the working piston and the valve contains a force/path transmission.
Claim 6
Dependent Claim
36 words
An apparatus according to claim 1, wherein the pressure differential across the working piston is varied by means of an additional valve connected to a side of the working piston facing away from the pressure-resistant container.
Claim 7
Dependent Claim
18 words
An apparatus according to claim 1, wherein hydraulic cross-sections of the working piston and of the valve differ.
Claim 8
Dependent Claim
50 words
An apparatus according to claim 1, wherein the working piston is a damping piston, a damping of which is varied by means of an inductor in such a a manner that there is a delay between balancing the pressure differential across the working piston and the closing of the valve.
Claim 9
Dependent Claim
30 words
An apparatus according to claim 1, wherein a control unit brings about a time delay between balancing the pressure differential across the working piston and the closing of the valve.
Claim 10
Dependent Claim
15 words
An apparatus according to claim 8, wherein said control unit is an electronic control unit.
Claim 11
Dependent Claim
16 words
An apparatus according to claim 1 wherein the degassing is additionally boosted by degassing boosting means.
Claim 12
Dependent Claim
34 words
An apparatus according to claim 10, wherein the degassing boosting means includes at least one of stirring means for stirring the fluid, heating means for heating the fluid, injecting means for injecting the fluid.
Claim 13
Dependent Claim
19 words
An apparatus according to claim 11, wherein the injecting means includes at least one of inductors and venturi tubes.
References Cited (Backward Citations)
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US3834136A
Cited
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Cited
JPS60210678A
Cited
US4718922A
Cited
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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) | 1994-04-22 | 1994-10-22 | 1995-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-04-22 | 1998-10-22 | 1999-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-04-22 | 2002-10-22 | 2003-04-23 | $7700.00 | Window Closed / Lapsed |