EP0346887A1 - Sealing plug - Google Patents

Sealing plug Download PDF

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Publication number
EP0346887A1
EP0346887A1 EP89110827A EP89110827A EP0346887A1 EP 0346887 A1 EP0346887 A1 EP 0346887A1 EP 89110827 A EP89110827 A EP 89110827A EP 89110827 A EP89110827 A EP 89110827A EP 0346887 A1 EP0346887 A1 EP 0346887A1
Authority
EP
European Patent Office
Prior art keywords
sealing plug
sealing
vessel
opening
air
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Withdrawn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
EP89110827A
Other languages
German (de)
English (en)
French (fr)
Inventor
Kiyoshi Imamura
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0346887A1 publication Critical patent/EP0346887A1/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B65D39/00—Closures arranged within necks or pouring openings or in discharge apertures, e.g. stoppers
    • B65D39/0005—Closures arranged within necks or pouring openings or in discharge apertures, e.g. stoppers made in one piece
    • B65D39/0011—Closures arranged within necks or pouring openings or in discharge apertures, e.g. stoppers made in one piece from natural or synthetic cork, e.g. for wine bottles or the like
    • 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
    • B65D39/00—Closures arranged within necks or pouring openings or in discharge apertures, e.g. stoppers

Definitions

  • This invention relates to a sealing plug and, more particularly, to a sealing plug for sealing the opening of a vessel such as a test tube or a beaker to block air or water flow between the inside and outside of the vessel.
  • sealing plugs for sealing the opening of such vessels as test tubes, flasks, beakers and and so forth used for scientific experiments are generally made of cork, which occurs naturally, light in weight and very elastic.
  • cork since cork occurs naturally, its produc­tion is limited. In addition, with the progress of techniques of synthesis and method of mass produc­tion and also versatile needs for chemical stability and so forth, other materials than cork such as rub­ber, synthetic rubber, glass and polymers, e.g., vinyl chloride, nylon, silicone, are gradually exten­sively used for the sealing plug.
  • FIG. 3 shows a prior art sealing plug 2 for sealing an opening 1a of a vessel 1.
  • the plug 2 should be formed with bores 2, through which glass tubes 6 are inserted to transfer liquid W contained in the vessel 1 to the outside. It is, however, considerably difficult to form the bores 6.
  • This invention seeks to solve the above problems.
  • a sealing plug for sealing the opening of a vessel to block air and water, which sealing plug is made of rubber or polymer foam having numerous independent pores.
  • the sealing plug itself can be light in weight.
  • the independent pores permit the sealing plug to be flexibly fitted to the size and shape of the opening of the vessel owing to the elas­ticity of themselves and their contained air.
  • the sealing plug thus can seal the vessel in close contact therewith and by filling even very slight gaps with the vessel opening.
  • Fig. 1 is a perspective view showing an embodi­ment of the invention.
  • reference numeral 1 designates a glass vessel.
  • An opening 1a of the glass vessel 1 is sealed with a sealing plug 2.
  • the sealing plug 2 has a tapered perhpheral surface 3 with the diameter reduced toward the front end so that it can be readily inserted into the open­ing 1a.
  • the sealing plug 2 is made of a synthetic rubber or polymer material. This material is foamed to form numerous independent pores 4.
  • the sealing plug 2 thus does not permit passage of air or water, that is, it has a sealing property.
  • the sealing plug 2 can be effectively used to seal a vessel for culturing anaerobic bacteria for it can block air.
  • the sealing plug 2 having numerous independent pores 4 contains considerable air in the inside, although the sealing plug 2 is made of synthetic rubber or polymer material which is heavy in weight, it may be very light in weight for it has numerous independent pores.
  • the light-weight sealing plug 2 requires small labor at the time of its transportation and can be handled conveniently.
  • the soft sealing plug 2 has extended adap­tability with respect to the shape and size of the opening 1a of the vessel. It can softly fit itself to the vessel opening even where the slope of the taper 3 is made slightly sharper. It can seal the opening 1a of the vessel 1 in close contact therewith without any gap formed therewith.
  • sealing plug 2 By making use of the extended adaptability of the manufacture and storage of the sealing plug 2 can be readily controlled by simplifying the size and shape standards of the sealing plug 2 fn the prior art.
  • the sealing plug 2 has numerous independent pores 4 formed by foaming rubber or poly­mer material, actually it consists of its material and air and has a reduced material density, so that its processing can be facilitated.
  • sealing plug 2 may be readi­ly formed with bores 6 for mounting pipes 5 therein as shown in Fig. 2.
  • sealing plug 2 using silicone or like expensive material requires comparatively low material expenditures, thus permitting cost reduction.
  • the sealing plug according to the invention has numerous independent pores formed by foaming rubber or polymer material, it is possible to maintain the function of sealing the vessel.
  • sealing plug can be made lighter in weight with numerous independent pores, its transportation and other handling can be facili­tated and carried out more conveniently.
  • sealing plug since the sealing plug has rich elasti­city because of its numerous independent pores, it has extended adaptability with respect to the size and shape of the vessel opening, and the manufacture and storage of sealing plugs can be controlled more easily by simplifying the size and shape standards.
  • sealing plug is formed by foaming rubber or polymer material, it can be more readily machined to form, for instance, bores for passing glass pipes.
  • the sealing plug is formed by foaming rubber or polymer, it requires a reduced amount of material, so that its cost can be reduced.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Laminated Bodies (AREA)
EP89110827A 1988-06-16 1989-06-14 Sealing plug Withdrawn EP0346887A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP78923/89U 1988-06-16
JP7892388U JPH021651U (en, 2012) 1988-06-16 1988-06-16

Publications (1)

Publication Number Publication Date
EP0346887A1 true EP0346887A1 (en) 1989-12-20

Family

ID=13675381

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89110827A Withdrawn EP0346887A1 (en) 1988-06-16 1989-06-14 Sealing plug

Country Status (2)

Country Link
EP (1) EP0346887A1 (en, 2012)
JP (1) JPH021651U (en, 2012)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7517933B2 (en) 2003-06-06 2009-04-14 Jamak Fabrication-Tex, Llc Flexible bakeware
US7966970B2 (en) 2005-07-19 2011-06-28 M Management-Tex, Llc Dairy inflation
US7997439B2 (en) 2003-06-06 2011-08-16 Jamak Fabrication-Tex, Llc Flexible bakeware having a multi-piece carrier system
CN102874487A (zh) * 2011-07-12 2013-01-16 苏州伟睿达机械科技有限公司 瓶塞

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005350095A (ja) * 2004-06-09 2005-12-22 Natl Inst Of Radiological Sciences 気密蓋

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2307843A1 (fr) * 1975-04-15 1976-11-12 Simflex Substitut du liege naturel, notamment pour le bouchage de recipients
WO1980001559A1 (en) * 1979-01-30 1980-08-07 Metal Box Co Ltd Closures for containers for wine or wine-based products

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4827462U (en, 2012) * 1971-08-04 1973-04-03

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2307843A1 (fr) * 1975-04-15 1976-11-12 Simflex Substitut du liege naturel, notamment pour le bouchage de recipients
WO1980001559A1 (en) * 1979-01-30 1980-08-07 Metal Box Co Ltd Closures for containers for wine or wine-based products

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7517933B2 (en) 2003-06-06 2009-04-14 Jamak Fabrication-Tex, Llc Flexible bakeware
US7997439B2 (en) 2003-06-06 2011-08-16 Jamak Fabrication-Tex, Llc Flexible bakeware having a multi-piece carrier system
US7966970B2 (en) 2005-07-19 2011-06-28 M Management-Tex, Llc Dairy inflation
US8402921B2 (en) 2005-07-19 2013-03-26 M Management-Tex, Llc Dairy inflation
CN102874487A (zh) * 2011-07-12 2013-01-16 苏州伟睿达机械科技有限公司 瓶塞

Also Published As

Publication number Publication date
JPH021651U (en, 2012) 1990-01-08

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

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17P Request for examination filed

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18D Application deemed to be withdrawn

Effective date: 19930119