US1548186A - Device for the withdrawal of liquids under gaseous pressure - Google Patents

Device for the withdrawal of liquids under gaseous pressure Download PDF

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Publication number
US1548186A
US1548186A US535192A US53519222A US1548186A US 1548186 A US1548186 A US 1548186A US 535192 A US535192 A US 535192A US 53519222 A US53519222 A US 53519222A US 1548186 A US1548186 A US 1548186A
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Prior art keywords
pressure
receptacle
withdrawal
liquid
resistance
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US535192A
Inventor
Claude Georges
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LAZOTE Inc
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LAZOTE Inc
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0104—Shape cylindrical
    • F17C2201/0119—Shape cylindrical with flat end-piece
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F17C2221/013—Carbone dioxide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
    • F17C2223/033—Small pressure, e.g. for liquefied gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/04—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by other properties of handled fluid before transfer
    • F17C2223/042—Localisation of the removal point
    • F17C2223/043—Localisation of the removal point in the gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/04—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by other properties of handled fluid before transfer
    • F17C2223/042—Localisation of the removal point
    • F17C2223/046—Localisation of the removal point in the liquid
    • F17C2223/047—Localisation of the removal point in the liquid with a dip tube
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
    • F17C2225/0107—Single phase
    • F17C2225/0123—Single phase gaseous, e.g. CNG, GNC
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/04—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by other properties of handled fluid after transfer
    • F17C2225/042—Localisation of the filling point
    • F17C2225/043—Localisation of the filling point in the gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/04—Indicating or measuring of parameters as input values
    • F17C2250/0404—Parameters indicated or measured
    • F17C2250/0408—Level of content in the vessel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/04—Indicating or measuring of parameters as input values
    • F17C2250/0404—Parameters indicated or measured
    • F17C2250/043—Pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/04—Indicating or measuring of parameters as input values
    • F17C2250/0486—Indicating or measuring characterised by the location
    • F17C2250/0495—Indicating or measuring characterised by the location the indicated parameter is a converted measured parameter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/07—Actions triggered by measured parameters
    • F17C2250/072—Action when predefined value is reached
    • F17C2250/077—Action when predefined value is reached when empty
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2931—Diverse fluid containing pressure systems
    • Y10T137/3115—Gas pressure storage over or displacement of liquid
    • Y10T137/3127—With gas maintenance or application
    • Y10T137/313—Gas carried by or evolved from liquid
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8158—With indicator, register, recorder, alarm or inspection means
    • Y10T137/8326—Fluid pressure responsive indicator, recorder or alarm

Definitions

  • T is invention relates to devices for the at Paris, Republic withdrawal of liquids under gaseous pressure from receptacles therefor and has for its object the provision-of an indicator permitting determination, without the necessity of employing a level indicating gauge, of the instant when the receptacle is practically emptied of 1i uid and the liquid atthe point of withdrawa is re laced by gas.
  • the present invention is o s ecial applicability to apparatus where liqui s such as liquefied carhon-dioxide and cerned.
  • piping through liquid ammonia are conto the present invention the whichthe liquid under gaseous pressure is withdrawn from thereceptacle containing it and delivered to a space at ressure than that of the receptacle. is provi ed with means for opposing a resistance to the flow of fluids at or near the exit from the receptacle, means for opposing a second resistance to the flow of fluids after passage past the first resistance and prior to dehvery, and means such as a pressure gauge located between the two resistshoes for the purpose hereinafter described.
  • the first resistance to the asconsist of a valve w ich sage of fluids may pens or closes the opening throu h WhlCh the liquid is drawn ofi and whic can be tube 0 duit D dips into the liq at will to vary the extent of opening.
  • the second resistance, placed. in front of the extremity through which the dlschar 0 takes place, may consist of a small diameter and of sufiicient length, preferably in the form of a coil. The second resistance may also be created by.
  • A is the receptacle intended to contain the liquid under pressure which enters through the tube B, together with the gas which escapes through the tube C.
  • a withdrawal tube or conuid and its upper portion is provided with any adjustable valve E.
  • the valve is connected also to a conduit K and a vtube F which is adapted to ensure a considerable loss of pressure in the current of fluid traversing it.
  • the tube F is, for example, formed of a coiled tube of small diameter.
  • a pressure gauge G capable of indicating the highest pressure prevailing in the receptacle A, is connected to the conduit K.
  • the tube F terminates in a low pressure conduit H into which it is intended to pass the liquid coming from the receptacle It should be mentioned that if, during the withdrawal operation, an obstruction should for some reason occur in the tube beyond the pressure gau e connection, the pressure indicated by t e gauge will increase until it reaches the pressure in the receptacle A; the pressure gauge G therefore must be capable of resisting this pressure.
  • a device for the withdrawal from a receptacle of liquid under gaseous pressure contained therein having a conduit through which the liquid is withdrawn from the receptacle and delivered to a space ata lower pressure than that of the receptacle, means for opposing a resistance to the flow of fluids from the receptacle, means for oposing a second resistance to the flow of fluids aftertheir passage past the first resistance and prior to their delivery, and pressure indicating means located between the twp resistances-for the purpose hereinbefore specified.
  • a device for the withdrawal from a receptacle of liquid under gaseous pressure contained therein having a conduit through which the liquid is withdrawn from the re-.
  • a device for separating liquids from receptacle therefor havin an outlet for the liquid, a conduit for the hquid leading from the outlet, means at the opposite ends of the conduit to resist the passage of the liquid therethrough and pressure indicating means connected to the conduit between the resistance means.
  • a receptacle therefor havin an outlet for the liquid, a conduit for the hquid leading from the outlet, an adjustable valve at the end of the conduit near the outlet, means at the other end of the conduit to resist the. passage of liquld, and pressure indicatin means connected to the conduit between t e valve and resistance means.
  • a receptacle therefor having an outlet for the liquid, a conduit for the liquid leading from the outlet, an adjustable valve at the outlet from the receptacle, a coiled tube of small internal diameter connected to the other end of the conduit to resist the passage of liquid therethrough, and pressure indicating means connected to the conduit between the valve and tube.

Description

Aug. 4, 1925.
G. CLAUDE DEVICE FOR THE WITHDRAWAL OF LIQUIDS UNDERv GASEOUS PRESSURE Filed Feb. 9, 1922 INVENTOR i @zm 83y 4v ATT 'VEY3 7 Patented Aug.
oneness caavnp,
,nazo'rn moi,
UNITED STATES OI PARIS, IBANCE, ASSIGNOB, BY IESNE ASSIGNMENTS, TO
CORPORATION 01 DELAWARE.
v 1, s4s,18 PATENT OFFICE.
DEVICE FOR THE WITHDBAWAL O1 LIQUIDS UNDER GASEO'UB PRESSURE.
f Application and Ifebruary a, 1m. Serial Io. seam.
' To all whom it may concern: 1
Be it known that I, Gnomes CLAUDE, a
I citizen of the Republic of France, residing of France, have invente certain new and useful Improvements in Devices for zthe Withdrawal of Liquids Under Gaseous Pressure; and I do hereby declare the followin to. be a full, clear, and exact description 0 the invention, such as will enable others skilled in the art to which it a pertains to make and use the same.
T is invention relates to devices for the at Paris, Republic withdrawal of liquids under gaseous pressure from receptacles therefor and has for its object the provision-of an indicator permitting determination, without the necessity of employing a level indicating gauge, of the instant when the receptacle is practically emptied of 1i uid and the liquid atthe point of withdrawa is re laced by gas.- The present invention is o s ecial applicability to apparatus where liqui s such as liquefied carhon-dioxide and cerned.
According piping, through liquid ammonia are conto the present invention the whichthe liquid under gaseous pressure is withdrawn from thereceptacle containing it and delivered to a space at ressure than that of the receptacle. is provi ed with means for opposing a resistance to the flow of fluids at or near the exit from the receptacle, means for opposing a second resistance to the flow of fluids after passage past the first resistance and prior to dehvery, and means such as a pressure gauge located between the two resistshoes for the purpose hereinafter described.
It results from these resistances, which are so arranged as to create relatively important pressure reductions, that the pressure in 'the part of the piping which is between the two resistances is intermediate between the pressure in the receptacle and the pressure in the space of discharge. A pressure gauge is connected with this part of the piping so as to indicate the intermediate, pressure, and at the moment when, upon drawing off, the liquid is replaced bygas, a rise of pressure is indicated by the pressure gauge which thus shows that the'drawing oil of the liquid is terminated.
In practice the first resistance to the asconsist of a valve w ich sage of fluids may pens or closes the opening throu h WhlCh the liquid is drawn ofi and whic can be tube 0 duit D dips into the liq at will to vary the extent of opening. The second resistance, placed. in front of the extremity through which the dlschar 0 takes place, may consist of a small diameter and of sufiicient length, preferably in the form of a coil. The second resistance may also be created by. msertmg in the discharge tube a diap ragm having ,a small orifice throu h which the fluid is permitted to pass, or by terminating this tube with an orifice or mouthpiece of reduced cross-section. These arrangements may also be combined by using a tube of small diameter terminating in an orifice or mouthpiece of still further reduced section then that of the tube.
In order that the invention may be clearly understood and readil carried into effeet, the same will now e described more regulated fully with reference to the accompanymg drawing which shows diagrammatically and by way of'example one method of carrying out the present invention as applied to a separating receptacle for liquids and gases.-
, In .the drawing A is the receptacle intended to contain the liquid under pressure which enters through the tube B, together with the gas which escapes through the tube C. A withdrawal tube or conuid and its upper portion is provided with any adjustable valve E. The valve is connected also to a conduit K and a vtube F which is adapted to ensure a considerable loss of pressure in the current of fluid traversing it. For this purpose the tube F is, for example, formed of a coiled tube of small diameter. Between the tube F and thevalve E a pressure gauge G, capable of indicating the highest pressure prevailing in the receptacle A, is connected to the conduit K. The tube F terminates in a low pressure conduit H into which it is intended to pass the liquid coming from the receptacle It should be mentioned that if, during the withdrawal operation, an obstruction should for some reason occur in the tube beyond the pressure gau e connection, the pressure indicated by t e gauge will increase until it reaches the pressure in the receptacle A; the pressure gauge G therefore must be capable of resisting this pressure.
From the foregoing, it will be seen that .the
a simple and useful device is rovided whereby the separation of liqui s from gases under pressure may be accom lished.
he operator is enabled to accurate y note the termination of flow of the liquid at the instant when such flow ceases. This is a material advantage in many Operations and a result which is not obtainable so simply by use of ordinary level gauges.
Various changes may be made in the details of construction and arrangement of parts without, departing from the invention or thereof.
I claim: 1. A device for the withdrawal from a receptacle of liquid under gaseous pressure contained therein, having a conduit through which the liquid is withdrawn from the receptacle and delivered to a space ata lower pressure than that of the receptacle, means for opposing a resistance to the flow of fluids from the receptacle, means for oposing a second resistance to the flow of fluids aftertheir passage past the first resistance and prior to their delivery, and pressure indicating means located between the twp resistances-for the purpose hereinbefore specified. 2. A device for the withdrawal from a receptacle of liquid under gaseous pressure contained therein, having a conduit through which the liquid is withdrawn from the re-. ceptacle and delivered to a space at a lower pressure than that of the receptacle, a valve to oppose a resistance to the flow of fluids from the receptacle, a constricted tube to oppose a second resistance to the flow of fluids after their passage past the first resistance and prior to then delivery, and pressure-indicating means located between the two resistances tor the purpose hereinbefore specified. H
3. A device for the withdrawal from a receptacle of liquid under gaseous pressure contained therein, having a conduit through sacrificing any of the advantages gasesiunder pressure, the combination of a which the liquid is withdrawn from the receptacle and delivered to a space at a lower pressure than that of the receptacle, means for opposing a resistance to the flow of fluids from the receptacle, a tube of small diameter and considerable length to oppose a second resistance to the ow of fluids after their passage past the first resistance and prior to their delivery, and pressure-indicating means located between the two resisfiaices for the purpose hereinbefore speci- 4, In a device for separating liquids from receptacle therefor havin an outlet for the liquid, a conduit for the hquid leading from the outlet, means at the opposite ends of the conduit to resist the passage of the liquid therethrough and pressure indicating means connected to the conduit between the resistance means.
5. In a device for separating liquids from gases under pressure, the combination of a receptacle therefor havin an outlet for the liquid, a conduit for the hquid leading from the outlet, an adjustable valve at the end of the conduit near the outlet, means at the other end of the conduit to resist the. passage of liquld, and pressure indicatin means connected to the conduit between t e valve and resistance means.
6. In a device for separating liquids from gases under pressure, the combination of a receptacle therefor having an outlet for the liquid, a conduit for the liquid leading from the outlet, an adjustable valve at the outlet from the receptacle, a coiled tube of small internal diameter connected to the other end of the conduit to resist the passage of liquid therethrough, and pressure indicating means connected to the conduit between the valve and tube.
In testimony whereof I atfix my signature- GEORGES CLAUDE.
US535192A 1922-02-09 1922-02-09 Device for the withdrawal of liquids under gaseous pressure Expired - Lifetime US1548186A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2457874A (en) * 1943-12-20 1949-01-04 American Machine & Metals Fluid level indicator
US2764177A (en) * 1952-01-24 1956-09-25 Cline Electric Mfg Co Regulator structure
US2936000A (en) * 1957-07-05 1960-05-10 Marion M Mason Combination valve and gauge assembly
US4086060A (en) * 1976-10-22 1978-04-25 Jocelyn Dickson Disposable manipulative laboratory device for transferring biological fluids
US5186362A (en) * 1991-08-19 1993-02-16 Biagi Jr Hugh A Liquid transfer assembly
US20080197147A1 (en) * 2007-02-20 2008-08-21 Serac Group Method and a device for regulating pressure in a vessel containing a liquid

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2457874A (en) * 1943-12-20 1949-01-04 American Machine & Metals Fluid level indicator
US2764177A (en) * 1952-01-24 1956-09-25 Cline Electric Mfg Co Regulator structure
US2936000A (en) * 1957-07-05 1960-05-10 Marion M Mason Combination valve and gauge assembly
US4086060A (en) * 1976-10-22 1978-04-25 Jocelyn Dickson Disposable manipulative laboratory device for transferring biological fluids
US4129419A (en) * 1976-10-22 1978-12-12 Jocelyn Dickson Disposable laboratory device for transfer of fluids to a centrifugal analyzer head
US5186362A (en) * 1991-08-19 1993-02-16 Biagi Jr Hugh A Liquid transfer assembly
US20080197147A1 (en) * 2007-02-20 2008-08-21 Serac Group Method and a device for regulating pressure in a vessel containing a liquid
US8690010B2 (en) * 2007-02-20 2014-04-08 Serac Group Method and a device for regulating pressure in a vessel containing a liquid

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