US2872064A - Test tube closure, particularly for bacteriological purposes - Google Patents

Test tube closure, particularly for bacteriological purposes Download PDF

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Publication number
US2872064A
US2872064A US647766A US64776657A US2872064A US 2872064 A US2872064 A US 2872064A US 647766 A US647766 A US 647766A US 64776657 A US64776657 A US 64776657A US 2872064 A US2872064 A US 2872064A
Authority
US
United States
Prior art keywords
test tube
cap
spring
closure
tube closure
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
US647766A
Other languages
English (en)
Inventor
Bruggmann Albert
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.)
Ludi & Cie Metallwarenfabriken
Ludi & Metallwarenfabriken Cie
Original Assignee
Ludi & Cie Metallwarenfabriken
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 Ludi & Cie Metallwarenfabriken filed Critical Ludi & Cie Metallwarenfabriken
Application granted granted Critical
Publication of US2872064A publication Critical patent/US2872064A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M23/00—Constructional details, e.g. recesses, hinges
    • C12M23/38—Caps; Covers; Plugs; Pouring means
    • 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
    • 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
    • B01L3/50—Containers for the purpose of retaining a material to be analysed, e.g. test tubes
    • B01L3/508—Rigid containers without fluid transport within
    • B01L3/5082—Test tubes per se
    • B01L3/50825—Closing or opening means, corks, bungs
    • 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
    • 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
    • B65D55/00—Accessories for container closures not otherwise provided for
    • B65D55/02—Locking devices; Means for discouraging or indicating unauthorised opening or removal of closure
    • B65D55/04—Spring clips, e.g. of wire or of sheet metal
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M23/00—Constructional details, e.g. recesses, hinges
    • C12M23/02—Form or structure of the vessel
    • C12M23/08—Flask, bottle or test tube

Definitions

  • the present invention relates to a closure of a test tube, particularly for bacteriological purposes.
  • the novel closure is characterized by a closure cap and by at least one spring disposed therein for engaging the inner surface of the open end of the test tube when the cap is slipped thereon to thereby retain the cap on the test tube.
  • the closure shown in the drawing includes a closure cap 1 provided near its top or closed end 2 with an internal bead 3.
  • a wire spring 4 disposed within the cap constitutes a loop 5 having a pair of arms 6 crossing each other.
  • the central portion 7 of the wire loop is curved inwardly being laterally continued by protruding bent portions 8 which engage an internal annular groove 9 of the cap formed between the end 2 and the internal head 3 thereof.
  • the ends of the arms 6 of the wire spring are bent inwardly at 10.
  • the spring arms 6 which initially engage the inner surface of the cap 1 at 10 will be urged inwardly away from the walls of the cap 1 and will ride upon the internal walls of the test tube into the position shown in the drawing. Owing to the engagement of the wire spring with the internal surface of the test tube the cap 1 will be frictionally held in a position on the test tube in which the rim of the test tube abuts the internal bead 3 constituting an effective seal therewith reducing evaporation of any liquid contents of the test tube to a minimum.
  • the cap consists of thin sheet metal, e. g. sheet aluminum.
  • the novel closure afiords such a seal of test tubes as is required for bacteriological purposes. Hence, it will no longer be necessary to close the test tubes by the conventional cotton plugs which must be discarded after use.
  • the closure can be easily sterilized and is capable of repeated use.
  • cap 1 may be provided with a small handle fixed to the center of the top 2 of the cap by a rivet.
  • the internal head of the rivet would be accommodated by the curved central portion 7 of the spring 4.
  • a test tube closure comprising a cylindrical cap having an internal diameter substantially equal to the external diameter of a test tube so that the cap closely fits on a test tube, said cap having a longitudinal dimension greater than said diameter, an annular projection formed internally of said cap for limiting the downward movement of the cap onto the tube and sealing the top edge of the test tube, said projection being spaced from the top of said cap a sufficient distance to form a groove therebetween, a one-piece spring completely disposed in a vertical plane and having an intermediate portion and two downwardly depending legs, the joint portions connecting said intermediate portion and said legs being removably seated in said groove with said intermediate portion extending diametrically of said cap and being bowed under tension for resiliently retaining said joint portions in said groove, said legs being of such length that the spring is totally disposed within said cap, diametrically opposed portions of said legs being crossed so that upon deflection of said legs toward each other said joint portions are further forced into said groove whereby the cap may be used to lift the test tube even when full of liquid, the free ends of said legs

Landscapes

  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Zoology (AREA)
  • Wood Science & Technology (AREA)
  • Clinical Laboratory Science (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • General Health & Medical Sciences (AREA)
  • Microbiology (AREA)
  • Biotechnology (AREA)
  • Sustainable Development (AREA)
  • Biomedical Technology (AREA)
  • Biochemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Genetics & Genomics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Hematology (AREA)
  • Analytical Chemistry (AREA)
  • Closures For Containers (AREA)
  • Sampling And Sample Adjustment (AREA)
US647766A 1956-03-29 1957-03-22 Test tube closure, particularly for bacteriological purposes Expired - Lifetime US2872064A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH341014T 1956-03-29

Publications (1)

Publication Number Publication Date
US2872064A true US2872064A (en) 1959-02-03

Family

ID=4505620

Family Applications (1)

Application Number Title Priority Date Filing Date
US647766A Expired - Lifetime US2872064A (en) 1956-03-29 1957-03-22 Test tube closure, particularly for bacteriological purposes

Country Status (3)

Country Link
US (1) US2872064A (de)
CH (1) CH341014A (de)
FR (1) FR1169739A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4342419A (en) * 1980-10-31 1982-08-03 Beckman Instruments, Inc. Safety cover for centrifuge bucket
US20090057310A1 (en) * 2007-08-31 2009-03-05 Dennis Hawkins Hanson Crystalline Material Container

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUD20090027A1 (it) * 2009-02-06 2010-08-07 Alifax Holding S P A Dispositivo medicale per la verifica della presenza di microorganismi o batteri in un campione d'organo o tessuto biologico, apparecchiatura diagnostica comprendente tale dispositivo medicale e relativo procedimento

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US615607A (en) * 1898-12-06 Bottle-stopper
US1572082A (en) * 1925-04-03 1926-02-09 Simon W Farber Inc Teapot cover
US1688622A (en) * 1926-07-08 1928-10-23 Stromberg Carlson Telephone Shield for radio amplifiers or detectors
US2675886A (en) * 1951-03-21 1954-04-20 Gen Motors Corp Filler pipe cap provided with filter assembly

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US615607A (en) * 1898-12-06 Bottle-stopper
US1572082A (en) * 1925-04-03 1926-02-09 Simon W Farber Inc Teapot cover
US1688622A (en) * 1926-07-08 1928-10-23 Stromberg Carlson Telephone Shield for radio amplifiers or detectors
US2675886A (en) * 1951-03-21 1954-04-20 Gen Motors Corp Filler pipe cap provided with filter assembly

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4342419A (en) * 1980-10-31 1982-08-03 Beckman Instruments, Inc. Safety cover for centrifuge bucket
US20090057310A1 (en) * 2007-08-31 2009-03-05 Dennis Hawkins Hanson Crystalline Material Container

Also Published As

Publication number Publication date
CH341014A (de) 1959-09-15
FR1169739A (fr) 1959-01-05

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