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Publication numberUS3434615 A
Publication typeGrant
Publication dateMar 25, 1969
Filing dateSep 11, 1967
Priority dateSep 11, 1967
Publication numberUS 3434615 A, US 3434615A, US-A-3434615, US3434615 A, US3434615A
InventorsAnthony J Barletta
Original AssigneeInt Equipment Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Centrifuge bottle and closure therefor
US 3434615 A
Abstract  available in
Images(2)
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Claims  available in
Description  (OCR text may contain errors)

March 25, 1969 A. J. BARLETTA 3,434,615

CENTR IFUGE BOTTLE AND CLOSURE THEREFOR Filed Sept. 11. 1967 Shee t of 2 FIG] fi .r s I "I INVENTPOR ANTHONY J. BARLETTA BY, a

ATTORN EY March 25, 1969 A. J. BARLETTA 3,434,615

CENTRIFUGE BOTTLE AND CLOSURE THEREFOR Filed Sept. 11, 1967 Sheet 2 of 2 /6 E5 90 El 9 9 FIGB E3 "8:? he a I; I 8 6A I I? 1 I i i I? J" INVENTOR ANTHONY J. BARLETTA ATTORNEY United States Patent US. Cl. 21547 6 Claims ABSTRACT OF THE DISCLOSURE Plastic centrifuge bottle having a portion of its wall tapering outwardly to the mouth, a closure tapering inwardly towards its mouth-entering end and carrying a plurality of sealing rings, and means to attach the closure to the bottle and to render the seals eflective.

Plastic centrifuge bottles are widely used and are satisfactory to the extent they can be sealed against leakage while their contents are being centrifuged. One particular problem is that even when the upper part of the bottle is rigidly held in a jacket and the closure seated by a cap threaded on the jacket in accordance with Patent No. 3,265,296, for example, the sealing means sometimes fail.

The particular objective of the present invention is to provide a closure-bottle construction providing a seal of substantially increased effectiveness. In accordance with the invention, this objective is attained by tapering the upper end portion of the inner surface of the bottle outwardly to the mouth thereof and by providing a closure in the form of a stopper tapering inwardly towards its mouth-entering end. The closure has a plurality of annular grooves each supporting a sealing ring, the sealing rings being brought into effective sealing relationship with the tapered portion of the bottle by closure attaching means attached to the bottle.

In the accompanying drawings, there is shown an illustrative embodiment of the invention from which these and other of its objectives, novel features, and advantages will be readily apparent.

In the drawings:

FIGURE 1 is a perspective view of a centrifuge bottle in accordance with the invention, and the bottle-closing means therefor, the bottle-closing means being shown as detached from the bottle and its parts separated from each other.

FIGURE 2 is a vertically sectioned view on an increase in scale of the closure and of the upper part of the bottle, the closure being partly entered into the mouth of the bottle, and

FIGURE 3 is a view on the scale of FIGURE 2 but with the closure so clamped to the bottle as to render its sealing rings effective.

A centrifuge bottle is generally indicated at 5 and is shown 5 having a neck 6 provided with external threads 7 and establishing a shoulder 8. The bottle 5 has a relatively flexible wall structure as it is molded from a suitable plastic such, for example, as polyethylene, polypropylene, or a polycarbonate. As may best be seen in FIG- URES 2 and 3 the inner surface of the neck 6 is tapered outwardly as at 6A to the mouth 9 of the bottle 5.

A reinforcing jacket, generally indicated at 10 and preferably of metal, has a neck 11 formed with internal threads 12 and external threads 13, a portion 14 extending below the bottle shoulder 8 and an internal, intermediate shoulder 15 engagealble therewith. The internal threads 12 enable the jacket 10 to be threaded onto the bottle 5 until its shoulder 15 engages the shoulder 8, the

37,434,615 Patented Mar. 25, 1969 upper end of the jacket neck 11 then being below the mouth 9 of the bottle.

A closure, generally indicated at 16 and made of a suitable auto-claveable and clinically inert plastic, Delvin, a product of E. I. du Pont de Nemours: & Company, Inc., for example, includes a stopper portion 17 that is tapered inwardly towards its bottle-entering end. The stopper portion 17 has annular grooves 18 and 19 for the compressible sealing rings 20 and 21, respectively. The closure 16 also has a marginal flange 22 of a diameter greater than the inside diameter of the jacket neck 11 but less than the inside diameter of the generally indicated cap 23 which is interiorly threaded as at 24 for attachment to the jacket neck .11 and has an annular internal flange 25 engagea-ble with the closure flange 22 so that, as the cap 23 is threaded onto the jacket neck 11, the closure 16 will be securely seated.

It will be noted that the stopper portion 17 of the closure 16 is so dimensioned that its bottle-entering end is a free fit in the portion 6A of the bottle 5 and that when it has been advanced therein to an extent suitably compressing the sealing rings 20 and 21, the stopper portion 17 does not contact the portion 6A and the flange 22 does not engage the bottle mouth 9. Desirably, 'both the portion 6A and the portion 17 taper to the same degree, best results being obtained with a taper that is approximately 3 from the vertical.

With the construction provided by the invention the sealing rings 20 and 21 are compressed. approximately to the same extent with the ring 20 backing the sealing ring 21 and with the sealing ring 21 ensuring that the full pressure on it is not transferred to the sealing ring 20, even should leakage occur.

I claim:

1. In combination, a plastic centrifuge bottle, a portion of the inner surface of the bottle tapering outwardly to the mouth thereof, a closure in the form of a stopper tapering inwardly towards its mouth-entering end and having a plurality of grooves, 21 compressible sealing ring in each groove, and means to clamp said closure to the bottle, the axial extents of said bottle portion and of said stopper being such that said rings are compressed against said bottle portion when the closure is so clamped and the dimensions of the stopper being such that it is then substantially without contact with said bottle portion.

2. The combination of claim 1 in which the bottle has threads adjacent its mouth and the sealing rings are substantially in the zone of the threads.

3. The combination of claim 1 in which the taper of the bottle portion is approximately 3 4. The combination of claim 1 in which the taper of the bottle portion and of the stopper is approximately the same.

5. The combination of claim 1 in which the taper of the bottle portion and of the stopper is approximately 3.

6. The combination of claim 1 in which the closure includes a marginal flange dimensioned to overlie the mouth of the bottle.

References Cited UNITED STATES PATENTS 2,848,130 8/1958 Jesnig 215-47 XR 2,330,282 7/1967 Visser et al 215-47 XR 3,366,320 1/1968 Cho 233-46 GEORGE T. HALL, Primary Examiner.

US. Cl. X.R. 215-97; 233-26

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2330282 *Jul 31, 1940Sep 28, 1943Monsanto ChemicalsManufacture of continuous sheets or webs of plastic material
US2848130 *Oct 7, 1953Aug 19, 1958Duo Vent Vacuum Closure CompanPressure resistant closures
US3366320 *Jul 21, 1965Jan 30, 1968Atomic Energy Commission UsaCentrifuge sample holder
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3899096 *Aug 22, 1973Aug 12, 1975Illinois Tool WorksReformed plastic article and method of manufacture
US3938735 *Mar 13, 1975Feb 17, 1976Beckman Instruments, Inc.Capping assembly for thin all centrifuge tubes
US3998383 *Jul 16, 1975Dec 21, 1976E. I. Du Pont De Nemours And CompanyGradient separation apparatus
US4034883 *Aug 3, 1976Jul 12, 1977Wojcik Walter JClosure lid for home canning jar
US4076170 *Apr 18, 1977Feb 28, 1978Beckman Instruments, Inc.Tube cap assembly for preparative centrifuge rotors
US4080175 *Apr 19, 1977Mar 21, 1978Beckman Instruments, Inc.Internally activated sealing centrifuge test tube cap assembly
US4166573 *Dec 1, 1977Sep 4, 1979E. I. Du Pont De Nemours And CompanyCentrifuge tube enclosure
US4222513 *Dec 12, 1978Sep 16, 1980E. I. Du Pont De Nemours And CompanyCentrifuge tube seal
US4537320 *Oct 27, 1983Aug 27, 1985Nielsen Steven TCentrifuge tube having removable crown and swage fitting
US4591061 *Aug 2, 1982May 27, 1986Birkbeck CollegeSafety container for waste organic solvents
US4750525 *Apr 15, 1985Jun 14, 1988Vaughan Daniel JEnd closure for flexible plastic tubes
US4902270 *Oct 3, 1988Feb 20, 1990Nalge CompanyCentrifuge tube
US5020679 *Sep 12, 1990Jun 4, 1991Alberto SignoriniNursing apparatus
US5109997 *Jun 21, 1991May 5, 1992Phillips Edwin DExpandable stopper
US5127895 *Mar 30, 1990Jul 7, 1992Beckman Instruments, Inc.Self-seal centrifuge tube
US5158204 *Feb 6, 1992Oct 27, 1992Air Products And Chemicals, Inc.Containment and diversion cap for gas cylinders
US5174460 *Feb 26, 1992Dec 29, 1992Sunbeam Plastics CorporationDual seal closure-adaptor
US5213223 *Mar 23, 1992May 25, 1993Sunbeam Plastics CorporationChild resistant closure-adaptor
US6277331Aug 1, 1997Aug 21, 2001C. A. Greiner & Söhne Gesellschaft mbHHolding device for body fluids and tissues
US6874647 *Aug 12, 2002Apr 5, 2005Owens-Illinois Closure Inc.Plastic closure, closure and container package, and method of manufacture
US7147118Dec 20, 2004Dec 12, 2006Owens-Illinois Closure Inc.Plastic closure, closure and container package, and method of manufacture
US7461755 *Sep 20, 2005Dec 9, 2008ComarMoisture-tight safety closure and container having a flexible neck finish
US7611026Jun 10, 2005Nov 3, 2009Rexam Closure Systems Inc.Tamper-evident closure having a sealing disk and package for high-temperature applications
US8105556Dec 22, 2005Jan 31, 2012Thermo Electron Led GmbhCentrifuge adapter and closure
US8132685 *Oct 27, 2005Mar 13, 2012Pathtainer Systems International Pty. Ltd.Two-part closure for a container
US8215508Aug 21, 2008Jul 10, 2012Nalge Nunc International CorporationCentrifuge bottle closure and assembly thereof
US8267259 *Apr 14, 2010Sep 18, 2012Wunderwall, LLCCup for holding bottles in a bottle rack
US20040108294 *Aug 12, 2002Jun 10, 2004Bloom Kenneth S.Plastic closure, closure and container package, and method of manufacture
US20040193080 *Mar 24, 2003Sep 30, 2004Health Devices CorporationVibrator assembly with adaptor coupling
US20100258698 *Apr 14, 2010Oct 14, 2010Wunderwall, LLCCup for holding bottles in a bottle rack
DE8700742U1 *Jan 16, 1987May 14, 1987Herolab Gmbh Laborgeraete, 6837 St. Leon-Rot, DeTitle not available
DE102004062233A1 *Dec 23, 2004Jul 13, 2006Kendro Laboratory Products GmbhZentrifugenadapter und Verschluss
EP2190581A1 *Aug 21, 2008Jun 2, 2010Nalge Nunc International CorporationCentrifuge bottle closure and assembly thereof
WO1998005426A2 *Aug 1, 1997Feb 12, 1998Greiner & Soehne C ASealing device, separating device and collecting receptacle for a collector device
WO2005026008A1 *Sep 9, 2004Mar 24, 2005Tournaire SaFixing system for a socket mounted on a finally-shaped container
WO2009026436A1Aug 21, 2008Feb 26, 2009Peter Kevin BairdCentrifuge bottle closure and assembly thereof
WO2012130016A1 *Mar 5, 2012Oct 4, 2012Yuxiang ChenSeal cover with flexible interface
Classifications
U.S. Classification215/276, 422/918, 422/916, 215/335, 215/364, D09/505, 215/45, 215/44
International ClassificationB01L3/14
Cooperative ClassificationB01L3/50825, B01L3/5021
European ClassificationB01L3/50825, B01L3/5021