US3820576A - Pipette stopper - Google Patents

Pipette stopper Download PDF

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Publication number
US3820576A
US3820576A US00249141A US24914172A US3820576A US 3820576 A US3820576 A US 3820576A US 00249141 A US00249141 A US 00249141A US 24914172 A US24914172 A US 24914172A US 3820576 A US3820576 A US 3820576A
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US
United States
Prior art keywords
cap
chamber
parts
bottle
receptacle
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.)
Expired - Lifetime
Application number
US00249141A
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English (en)
Inventor
R Torrent
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.)
Firmenich SA
Original Assignee
Firmenich SA
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 Firmenich SA filed Critical Firmenich SA
Application granted granted Critical
Publication of US3820576A publication Critical patent/US3820576A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
    • B01L3/02—Burettes; Pipettes
    • B01L3/0282—Burettes; Pipettes mounted within a receptacle

Definitions

  • the invention relates to a screw-on bottle stopper incorporating a pipette.
  • bottles fitted with a pipette stopper are employed-All these bottles have the major defect that they are not sufficiently fluid-tight to withstand a notable difference between the inner pressure and the surrounding atmosphere without letting the contents escape. This occurs in particular when the bottle is in an aeroplane flying at high'altitude without being stored in a pressurized part of the plane.
  • French patent No. 1,267,062 and British patent No. 946,1 l0 disclose a graduated screw-on dispenser comprising a flexible chamber, said chamber being constituted by two parts which are simply nested together. The junction of the two parts is realized solely by their nesting and it is therefore insufficiently tight, Moreover, the chamber is not shielded from the external environment by anyy rigid means.
  • the object of the present invention is to provide a pipette stopper which does not offer the disadvantages of the known devices.
  • Said pipette stopper comprises a flexible chamber constituted by two parts, said parts being shielded from the external environment.
  • an absolute fluid-tightness is ensured by the perfect nesting of the two parts. It has been observed that the required fluidtightness was ensured even in the case of very fluid and volatile liquids and in cases where big differences existed between the inner pressure of the bottle and the surrounding atmosphere.
  • the pipette stopper of the present invention' is characterized by having a compact outer shape without projecting parts, and a construction which is simple and economic.
  • the pipette stopper comprises an external cap intended to be fitted on a receptacle, such as a bottle, and a chamber lodged within the cap, said chamber being tightly clamped between this latter and the receptacle when the cap is fitted on the receptacle.
  • the chamber is constituted by two parts nested one into the otherand tightly clamped together when the cap is fitted in position, one of the parts being connected to a tube communicating with the inner part of the chamber and immersed in the receptacle when the cap isfitted in position, and the other part comprising a flexible wall which may be compressed through an opening in the cap in order that by compression the air ofthe chamber is expelled and by subsequent release of pressure the liquid contents of the receptacle are sucked up through the tube into the pipette, and, when required, expelled from the latter by a new compression.
  • FIG. 1 is a view in cross section of a first embodiment of the invention and FIGS. 2 and 3 are respective views in cross section of second and third variations of the above illustrated embodiment.
  • the pipette stopper which in FIG. l is shown screwed down on a bottle l comprises an external cap 2, made of rigid plastic material for instance having an inner thread 3 by means of which it can be screwed onto the bottlel l, as shown.
  • a chamber 4 is constituted by a piece 5, shaped in the form of a dish, connected to a tube 6 communicating with the inner part of chamber 4, said tube being immersed in the liquid contained in the bottle when the cap is fitted in position, and a second piece 7, equally shaped in the form of a dish, which nests itself by means of its skirt into the groove existing between the external wall of piece 5 and an annular protruding edge 8 of the latter.
  • the external wall of 5 comprises a thread 9 which en ables chamber 4, formed by 5 and 7, to be screwed into cap 2, the chamber butting against a protruding edge lshaped in the cap.
  • Part 7 comprises a flexible wall l1 which rests against the pusher 12 mounted in an opening made in the upper part of cap 2. Once the cap is screwed onto bottle l, the two parts 5 and 7 are clamped together in such a way as to form a joint which is tight towards the liquid contained in the bottle and its vapor. Furthermore, chamber 4 is clamped between protruding edge 10 of the cap and the neck of bottle l, ensuring therefore a further fluid-tight closure at the bottle neck.
  • Parts 5 and 7 may be made of polyethylene for instance.
  • Part 5 may be shaped in such a form as to avoid the protruding edge 8.
  • Tube 6 does not necessarily have to dip down to the bottom of the bottle. lt may in fact be of short length and have its lower edge at a level higher than the normal level of the liquid contained in the bottle and be connected to a glass tube which dips completely into the liquid.
  • cap 2 may be fitted on said bottle in any different known way, for example by appropriate nesting or by a bayonet-joint. This equally applies to the assembly of chamber 4 into cap 2.
  • pusher 12 of the above embodiment is replaced by a pusher 14 which is integral with the resilient wall 11 of part 7.
  • Said pusher is mounted in opening 13 of cap 2 and it enables wall 11 and chamber 4 of the pipette stopper to be pushed.
  • a pipette stopper comprising an external cap including an inner fixing means adapted to be fitted to a receptacle such as a bottle, and a chamber within said cap, said chamber being tightly clamped between the cap and the receptacle when the cap is fitted on the receptacle, wherein the chamber includes two parts, nested into each other, one of said parts having means engaging with the inner fixing means ofthe cap so that said two parts are tightly pressed against a first protruding edge shaped in the cap when said parts are in position and wherein the fixing means of the cap engages a corresponding retaining part of the receptacle on which the cap is fitted, said engaging means of said one part including a first screw thread and said inner fixing means of said cap including a second screw thread.

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  • Health & Medical Sciences (AREA)
  • Clinical Laboratory Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Closures For Containers (AREA)
US00249141A 1971-05-14 1972-05-01 Pipette stopper Expired - Lifetime US3820576A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH713571A CH538965A (fr) 1971-05-14 1971-05-14 Bouchon-Pipette pour flacon

Publications (1)

Publication Number Publication Date
US3820576A true US3820576A (en) 1974-06-28

Family

ID=4320502

Family Applications (1)

Application Number Title Priority Date Filing Date
US00249141A Expired - Lifetime US3820576A (en) 1971-05-14 1972-05-01 Pipette stopper

Country Status (7)

Country Link
US (1) US3820576A (OSRAM)
CH (1) CH538965A (OSRAM)
DE (1) DE2223175A1 (OSRAM)
FR (1) FR2137861A1 (OSRAM)
GB (1) GB1379928A (OSRAM)
IT (1) IT957851B (OSRAM)
NL (1) NL7206308A (OSRAM)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3896974A (en) * 1974-06-07 1975-07-29 Mack Wayne Plastics Co Container and closure therefor
EP0006513A1 (de) * 1978-06-23 1980-01-09 Czech, Joachim Behälter zum Aufnehmen und Abgeben von Flüssigkeiten
DE3425900A1 (de) * 1983-07-13 1985-01-24 L'oreal, Paris Vorrichtung mit tropfenzaehler zum abgeben einer fluessigen oder pastoesen substanz
US4573503A (en) * 1983-10-10 1986-03-04 Koh-I-Noor Rapidograph, Inc. Ink dropper closure
US4955745A (en) * 1989-10-05 1990-09-11 Vauquelin Jeri A Bottle with applicator
US5154702A (en) * 1990-05-21 1992-10-13 Wheaton Industries Variable dosage dropper system
US5226572A (en) * 1992-06-11 1993-07-13 Comar, Inc. Bulb actuator for dropper closure
US5300042A (en) * 1992-03-02 1994-04-05 Kossoff-Sukel, Inc. Medication dispensing apparatus
US5307847A (en) * 1992-09-24 1994-05-03 Stanford Pavenick Applicator for fluid products
US5345981A (en) * 1992-09-24 1994-09-13 Stanford Pavenick Applicator for fluid products
US6352165B1 (en) * 2000-02-02 2002-03-05 Difelice Dion P. Replacement cap and pressurizing mechanism for bottle
US20050238408A1 (en) * 2004-01-20 2005-10-27 L'oreal Kit comprising two receptacles and an applicator
CN103025622A (zh) * 2010-06-07 2013-04-03 莱雅公司 使用吸液管的封装及涂抹装置
US20130112314A1 (en) * 2010-07-23 2013-05-09 F.S Korea Industries Inc Spuit type cosmetic container
US20140209206A1 (en) * 2013-01-28 2014-07-31 Well Max Beauty Lab Co., Ltd. Dropper assembly
US20140234007A1 (en) * 2011-09-27 2014-08-21 Pum-Tech Korea Co., Ltd. Spouting-type cosmetic container
US20140361047A1 (en) * 2013-06-07 2014-12-11 Young Ju Lee Automatic filling up spuit
US20150257510A1 (en) * 2012-10-04 2015-09-17 Yonwoo Co., Ltd Spuit-type cosmetic container

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2608563B1 (fr) * 1986-12-19 1989-08-18 Morel Simone Recipient distributeur a compte-gouttes
FR2609692B1 (fr) * 1987-01-21 1989-05-05 Lir Dispositif compte-gouttes pour la distribution de doses predeterminees de liquides

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3896974A (en) * 1974-06-07 1975-07-29 Mack Wayne Plastics Co Container and closure therefor
EP0006513A1 (de) * 1978-06-23 1980-01-09 Czech, Joachim Behälter zum Aufnehmen und Abgeben von Flüssigkeiten
DE3425900A1 (de) * 1983-07-13 1985-01-24 L'oreal, Paris Vorrichtung mit tropfenzaehler zum abgeben einer fluessigen oder pastoesen substanz
US4579153A (en) * 1983-07-13 1986-04-01 The French Joint Stock Company "L'oreal" Drop dispenser
US4573503A (en) * 1983-10-10 1986-03-04 Koh-I-Noor Rapidograph, Inc. Ink dropper closure
US4955745A (en) * 1989-10-05 1990-09-11 Vauquelin Jeri A Bottle with applicator
US5154702A (en) * 1990-05-21 1992-10-13 Wheaton Industries Variable dosage dropper system
US5300042A (en) * 1992-03-02 1994-04-05 Kossoff-Sukel, Inc. Medication dispensing apparatus
US5226572A (en) * 1992-06-11 1993-07-13 Comar, Inc. Bulb actuator for dropper closure
US5307847A (en) * 1992-09-24 1994-05-03 Stanford Pavenick Applicator for fluid products
US5345981A (en) * 1992-09-24 1994-09-13 Stanford Pavenick Applicator for fluid products
US6352165B1 (en) * 2000-02-02 2002-03-05 Difelice Dion P. Replacement cap and pressurizing mechanism for bottle
US20050238408A1 (en) * 2004-01-20 2005-10-27 L'oreal Kit comprising two receptacles and an applicator
US7534062B2 (en) * 2004-01-20 2009-05-19 L'oreal Kit comprising two receptacles and an applicator
CN103025622A (zh) * 2010-06-07 2013-04-03 莱雅公司 使用吸液管的封装及涂抹装置
CN103025622B (zh) * 2010-06-07 2015-07-29 莱雅公司 使用吸液管的封装及涂抹装置
US9089868B2 (en) * 2010-07-23 2015-07-28 Pum-Tech Korea Co., Ltd Spuit type cosmetic container
US20130112314A1 (en) * 2010-07-23 2013-05-09 F.S Korea Industries Inc Spuit type cosmetic container
US20140234007A1 (en) * 2011-09-27 2014-08-21 Pum-Tech Korea Co., Ltd. Spouting-type cosmetic container
US9078507B2 (en) * 2011-09-27 2015-07-14 Pum-Tech Korea Co., Ltd. Spouting-type cosmetic container
US20150257510A1 (en) * 2012-10-04 2015-09-17 Yonwoo Co., Ltd Spuit-type cosmetic container
US9723906B2 (en) * 2012-10-04 2017-08-08 Yonwoo Co., Ltd. Spuit-type cosmetic container
US20140209206A1 (en) * 2013-01-28 2014-07-31 Well Max Beauty Lab Co., Ltd. Dropper assembly
US9347811B2 (en) * 2013-01-28 2016-05-24 Well Max Beauty Lab Co., Ltd. Dropper assembly
US20140361047A1 (en) * 2013-06-07 2014-12-11 Young Ju Lee Automatic filling up spuit
US9234781B2 (en) * 2013-06-07 2016-01-12 Young Ju Lee Automatic filling up spuit

Also Published As

Publication number Publication date
FR2137861A1 (OSRAM) 1972-12-29
IT957851B (it) 1973-10-20
CH538965A (fr) 1973-07-15
GB1379928A (en) 1975-01-08
DE2223175A1 (de) 1972-11-30
NL7206308A (OSRAM) 1972-11-16

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