EP0139289A1 - Dichtungsanlage für Flaschen zur Verwendung in einer Zentrifuge - Google Patents

Dichtungsanlage für Flaschen zur Verwendung in einer Zentrifuge Download PDF

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Publication number
EP0139289A1
EP0139289A1 EP84112386A EP84112386A EP0139289A1 EP 0139289 A1 EP0139289 A1 EP 0139289A1 EP 84112386 A EP84112386 A EP 84112386A EP 84112386 A EP84112386 A EP 84112386A EP 0139289 A1 EP0139289 A1 EP 0139289A1
Authority
EP
European Patent Office
Prior art keywords
bottle
seal
cap
ring
groove
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP84112386A
Other languages
English (en)
French (fr)
Inventor
Lawrence Roy Barrett
Edward Thomas Sheeran, Jr.
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of EP0139289A1 publication Critical patent/EP0139289A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B5/00—Other centrifuges
    • B04B5/04—Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers
    • B04B5/0407—Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers for liquids contained in receptacles
    • B04B5/0414—Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers for liquids contained in receptacles comprising test tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
    • B65D41/04—Threaded or like caps or cap-like covers secured by rotation
    • B65D41/0435—Threaded or like caps or cap-like covers secured by rotation with separate sealing elements
    • B65D41/0442—Collars or rings

Definitions

  • This invention relates to a seal assembly for a bottle and, in particular, to a seal assembly for a bottle of the type used to carry a sample during centrifugation.
  • centrifuge bottles are available in a wide variety of common shapes and volumes. Typical of such bottles are wide mouth bottles such as those sold by E. I. du Pont de Nemours and Company, Inc. under the trademark Sorvall®. These bottles are typically provided with threads either on the upper exterior or interior portions of the bottle's neck. The threads are adapted to receive conforming threads provided on the appropriate surface of a generally inverted cup-shaped cap.
  • annular seal ring typically an O-ring seal formed from an elastomeric material, disposed in a seal chamber defined between the upper end surface of the bottle and the base surface of an annular groove formed in the undersurface of the cap.
  • the groove may be molded into the material of the cap or otherwise defined by the cooperative association of the cap's shell and a plug receivable into the shell.
  • Figure 1 illustrates an elevational view entirely in section of a portion of the typical seal arrangement available in the prior art with a portion of the bottle and cap broken away.
  • the structure shown is symmetrical about the centerline CL of the bottle B and cap C.
  • the undersurface U of the cap C has formed therein an annular groove G which cooperates with the upper end surface F of the neck N of the bottle B to define an enclosed annular seal chamber E adapted to receive a seal member S.
  • the groove G is defined by an annular flanqe K and a concentric inner wall W.
  • the inner surface of the flange K has threads H thereon.
  • the neck N of the bottle B has corresponding threads J thereon.
  • a seal assembly for use with the bottle and bottle cap of the type hereinabove described is provided which minimizes the restorative force imposed on the seal ring and thereby minimizes back-up of the cap with respect to the bottle.
  • the seal assembly includes a generally annular seal ring and a slip ring arranged in stacked relationship within a seal chamber defined between the end of the bottle and the base of the groove.
  • the seal ring is adapted to contact in sealed engagement with the end surface of the neck of the bottle while the slip ring contacts against the base surface of the groove in the cap.
  • the annular slip ring is contoured to receive the seal ring in stacked relationship and is compressible into sealed engagement with both the seal ring and the cap.
  • the slip ring is fabricated of a suitable material so that the slip ring is slidable with respect to the base surface of the groove against which it is in contact as the cap is threaded onto the bottle to thereby avoid the generation of a circumferentially directed restoring force in the seal ring.
  • FIG. 2 shown is a side view of a bottle B having a cap C threaded thereto.
  • the bottle B is formed of a suitable plastics material such as polycarbonate or polypropylene, and is adapted to carry a sample of a material as that sample is exposed to a centrifugal force field.
  • the cap C is typically formed from a suitable plastics material, such as polypropylene or glass-filled nylon.
  • the bottle B is received in a cavity 12 provided on the periphery of a fixed angle centrifuge rotor 14.
  • the fixed angle of the cavity 12 may range from vertical orientatipn to any conventional angular orientation with respect to the axis of rotation 16 of the rotor 14.
  • a suitable sealed cover 18 is provided on the rotor 14.
  • the contents of the bottle B may be centrifuged in a swinging bucket rotor in accordance with established principles in the art.
  • a typical prior art seal arrangement which utilizes an annular elastomeric O-ring seal member S disposed in an annular chamber defined between the base surface of a groove G on the underside of the cap C and the top end surface of the neck N of the bottle B generates in the O-ring seal member S a restoring force while the cap C is threaded onto the bottle B.
  • This restoring force acts on the cap C in a manner which tends to cause the cap C to back-up with respect to the bottle B. Since centrifugation of the bottle imposes hiqh centrifuqal force fields on the contents, it is important that the maximum sealed integrity be maintained between the cap and the bottle to minimize leakage.
  • the seal assembly generally indicated by reference character 20 is disposed in the annular seal chamber E defined between the base of the groove G formed in the underside U of the bottle cap C and the upper end surface F of the neck N of the bottle B.
  • the groove G is defined in the cap C by the downwardly extending flange K and a generally concentric inner wall W extending parallel thereto.
  • the cap may be provided with threads H on either the inner surface of the flange K or the outer surface of the wall W with the bottle neck N having corresponding threads J on the appropriate surface.
  • the inner wall W may be defined by a plug received on the interior of the cap C. In this event, the threads H are provided on the inner surface of the flange K as shown in Figure 3.
  • the seal assembly in accordance with the present invention comprises a seal member 22 and a slip ring 24.
  • the seal member 22 is preferably in the form of an elastomeric O-ring having a circular cross-section.
  • the seal member 22 may assume any predetermined convenient configuration compatible for receipt within the seal chamber E in contacting relationship against the upper end of the bottle B.
  • the seal member is preferably fabricated from a suitable elastomeric material, such as a fluorelastomer sold by E. I. du Pont de Nemours and Company, Inc. under the trademark VITONO or neoprene.
  • the slip ring 24 is an annular member formed of a compressible material adapted to receive and form a sealed abutment with the seal ring 22.
  • the one surface 26 of the slip ring 24 that is adapted to abut in interfacial relationship with the base surface of the groove G in the cap C is provided with a shape in conformance thereto.
  • the surface 26 of the slip ring 24 has a shape conforming thereto. Of course. this surface may assume any desired configuration with the surface 26 of the ring 24 being shaped in conformity thereto.
  • the surface 28 of the slip ring 24 adapted to receive and abut the seal ring 22 is provided with a socket configured to receive the seal ring and is therefore shaped in conformance to the cross sectional configuration of the seal ring 22.
  • the socket surface 28 of the slip ring 24 is hemispherical in shape to conform thereto.
  • the seal ring and the socket surface 28 may, of course. assume any cross sectional configuration.
  • the slip ring 24 is fabricated of material which does not grasp onto but is slidable with respect to the material of the base surface of the groove G in the bottle cap C.
  • the slip ring is fabricated of a suitable plastics material, such as polypropylene or a fluorocarbon material such as that sold by E. I. du Pont de Nemours and Company. Inc. under the trademark TEFLON®.
  • the seal ring 22 and the slip ring 24 are arranged in stacked relationship within the seal chamber E defined between the base surface of the groove G in the cap C and the upper end surface F of the neck N of the bottle B.
  • the surface 26 of the slip ring 24 contacts against the base surface of the groove G with the seal ring 22 abutting against the end of surface F of the bottle B.
  • the seal ring 22 is received within the socket 28 in the slip ring 24.
  • the cap C is increasingly threaded in the right-hand threading direction T onto the bottle B due to the nature of the material used in the slip ring 24, the surface 26 thereof slides with respect to the base surface of the groove G against which it is contact to avoid the generation of a circumferentially directed restoring force in the seal ring.
  • the cap may be threaded securely to the bottom without the tendency of the cap to "back-up” due to the restorative force caused by torsion in the seal ring 22.
  • a compressional force acting in the direction of arrow P is exerted on the slip ring 24 and the seal ring 22. Compression of the seal ring 22 and the slip ring 24 seals the cap C to the bottle B.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Centrifugal Separators (AREA)
  • Closures For Containers (AREA)
EP84112386A 1983-10-20 1984-10-13 Dichtungsanlage für Flaschen zur Verwendung in einer Zentrifuge Withdrawn EP0139289A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US54375683A 1983-10-20 1983-10-20
US543756 1983-10-20

Publications (1)

Publication Number Publication Date
EP0139289A1 true EP0139289A1 (de) 1985-05-02

Family

ID=24169438

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84112386A Withdrawn EP0139289A1 (de) 1983-10-20 1984-10-13 Dichtungsanlage für Flaschen zur Verwendung in einer Zentrifuge

Country Status (4)

Country Link
EP (1) EP0139289A1 (de)
JP (1) JPS60106555A (de)
DK (1) DK501584A (de)
GR (1) GR80710B (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2207148A (en) * 1987-07-18 1989-01-25 Sterilin Ltd Bulk cell culture vessel
US7270787B2 (en) * 2003-07-31 2007-09-18 Thermo Fisher Scientific (Asheville) Llc Centrifuge sample jar and closure
US8105556B2 (en) * 2004-12-23 2012-01-31 Thermo Electron Led Gmbh Centrifuge adapter and closure

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1163363A (en) * 1966-10-12 1969-09-04 Pieter Gerben Beimers Improvements in or relating to a Screw Closure for a container of Thermoplastic Material
GB2044736A (en) * 1979-03-05 1980-10-22 Yoshino Kogyosho Co Ltd Combined bottle and screw cap assembly

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1163363A (en) * 1966-10-12 1969-09-04 Pieter Gerben Beimers Improvements in or relating to a Screw Closure for a container of Thermoplastic Material
GB2044736A (en) * 1979-03-05 1980-10-22 Yoshino Kogyosho Co Ltd Combined bottle and screw cap assembly

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2207148A (en) * 1987-07-18 1989-01-25 Sterilin Ltd Bulk cell culture vessel
US7270787B2 (en) * 2003-07-31 2007-09-18 Thermo Fisher Scientific (Asheville) Llc Centrifuge sample jar and closure
US8105556B2 (en) * 2004-12-23 2012-01-31 Thermo Electron Led Gmbh Centrifuge adapter and closure
DE102004062233B4 (de) * 2004-12-23 2020-09-03 Thermo Electron Led Gmbh Zentrifugenadapter und Verschluss

Also Published As

Publication number Publication date
GR80710B (en) 1985-02-19
JPS60106555A (ja) 1985-06-12
DK501584D0 (da) 1984-10-19
DK501584A (da) 1985-04-21

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): BE DE FR GB IT LU NL

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19860107

RIN1 Information on inventor provided before grant (corrected)

Inventor name: SHEERAN, EDWARD THOMAS, JR.

Inventor name: BARRETT, LAWRENCE ROY