US1935089A - Closure for collapsible tubes - Google Patents

Closure for collapsible tubes Download PDF

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Publication number
US1935089A
US1935089A US616771A US61677132A US1935089A US 1935089 A US1935089 A US 1935089A US 616771 A US616771 A US 616771A US 61677132 A US61677132 A US 61677132A US 1935089 A US1935089 A US 1935089A
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United States
Prior art keywords
diaphragm
tube
cap
nozzle
closure
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Expired - Lifetime
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US616771A
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Joseph M Hamilton
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Individual
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Priority to US616771A priority Critical patent/US1935089A/en
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    • 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
    • B65D47/00—Closures with filling and discharging, or with discharging, devices
    • B65D47/04—Closures with discharging devices other than pumps
    • B65D47/20—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge
    • B65D47/2018—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge comprising a valve or like element which is opened or closed by deformation of the container or closure
    • B65D47/2031—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge comprising a valve or like element which is opened or closed by deformation of the container or closure the element being formed by a slit, narrow opening or constrictable spout, the size of the outlet passage being able to be varied by increasing or decreasing the pressure

Definitions

  • This invention relates to collapsible tubes or containers for toothpaste and like semi-fluid material which is dispensed from a tube by collapsing the latter.
  • a diaphragm of flexible material is secured over the open nozzle of the tube.
  • This diaphragm is formed with a slit normally maintained tightly is. closed by the inherent contractile characteristics of the material of which the diaphragm is formed.
  • the elastic qualities of the diaphragm permit the slit to 20 open to permit the discharge of the tube contents.
  • the diaphragm contracts to normal position and causes closing of the slit.
  • Fig. 1 is a fragmentary view of a collapsible tube showing the discharge nozzle thereof in section and fitted with my improved closure device.
  • Fig. 2 is a similar view showing the diaphragm expanded to permit discharge of the tube contents.
  • Fig. 3 is a fragmentary view in perspective illustrating the exterior of my improved closure.
  • This tube is formed with a nozzle 11 which is cylindrical in form and which is exteriorly threaded so as to receive a cap 12.
  • This cap is formed with a concentric opening 14 which is in alignment, of course, with the axis of the nozzle 11.
  • a circular diaphragm 15 Arranged intermediate the cap 12 and the 45 outermost end of the nozzle ll-is a circular diaphragm 15 formed of rubber orany other suitable elastic composition.
  • This diaphragm is of a diameter that its marginal edges may be clamped tightly between the adjacent surfaces of the end of the cap 12 and the nozzle 11. It will be noticed that the center portion of the diaphragm is convex and projects slightly through the opening 14.
  • a slit 16 Formed centrally of this convex portion of the diaphragm 15 is a slit 16.
  • the inherent elastic (Cl. 22I"60) qualities or characteristics of the diaphragm are such that this slit is normally maintained tightly cl0sed.'
  • the convex portion of the diaphragm expans slightly to permit opening of the slit 16 and consequently discharge of the material in the tube.
  • the convex portion of the diaphragm contracts to normal position, closing the slit and sealing the nozzle.
  • a cork disk 17 is interposed between the diaphragm 15 and the end of the nozzle so as to prevent contact of the tube contents with the diaphragm until the tube is ready for use.
  • the cap 12 When the tube is ready for use, the cap 12 is removed from the tube by unscrewing it. The removable cork disk is removed from the cap and the cap is again applied to the nozzle as illustrated in Fig. 2. The tube is then ready for use.
  • the diaphragm will expand and the material will discharge in a thin ribbon.
  • said tube having a cylindrical nozzle, said nozzle being exteriorly threaded, a cap having a cylindrical portion interiorly threaded whereby it may be threaded on the end of said nozzle, said cap having a convexed end wall, said end wall of the cap having an enlarged opening formed centrally therethrough, the inner surface of the end wall of the cap adjacent the opening being rounded into a shoulder of uniform 0 slope, the outer edge of said opening being circular, a flexible diaphragm of even thickness over its entire area interposed between the cap and the nozzle end, the marginal edge of said diaphragm being adapted to be clamped between the cap and the end of the nozzle, the central portion of the diaphragm being sufiiciently convex to nest within the opening in the cap and project just slightly beyond the exterior surface or end of the cap, said convex portion of the diaphragm being formed with a central slit normally being r

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Tubes (AREA)

Description

Nov. 14, 1933.
J. HAMILTON CLOSURE FOR COLLAPSIBLE TUBES Filed June 13, 1952 Ill Patented Nov. 14, 1933 PATENT OFFICE CLOSURE FOR COLLAPSIBLE TUBES Joseph M. Hamilton, San Francisco, Calif.,
assignor of one-half to Ray H. Klstler, San
Francisco, Calif.
Application June 13, 1932. Serial No. 618,771
1 Claim.
This invention relates to collapsible tubes or containers for toothpaste and like semi-fluid material which is dispensed from a tube by collapsing the latter.
o' It is the principal object of the present invention to provide an exceedingly simple and inexpensive closure device for collapsible tubes which will readily permit dispensing of the material but will automatically close when the col-- lapsing pressure on the tube is relieved.
In carrying the invention into practice, a diaphragm of flexible material is secured over the open nozzle of the tube. This diaphragm is formed with a slit normally maintained tightly is. closed by the inherent contractile characteristics of the material of which the diaphragm is formed. When pressure is applied to the contents of the tube by collapsing the latter, the elastic qualities of the diaphragm permit the slit to 20 open to permit the discharge of the tube contents. When the pressure is relieved, the diaphragm contracts to normal position and causes closing of the slit.
One form which the invention may assume is exemplified in the following description and illustrated by way of example in the accompanying drawing, in which:
Fig. 1 is a fragmentary view of a collapsible tube showing the discharge nozzle thereof in section and fitted with my improved closure device.
Fig. 2 is a similar view showing the diaphragm expanded to permit discharge of the tube contents.
Fig. 3 is a fragmentary view in perspective illustrating the exterior of my improved closure.
Referring more particularly to the accompanying drawing, indicates a collapsible container or tube. This tube is formed with a nozzle 11 which is cylindrical in form and which is exteriorly threaded so as to receive a cap 12. This cap is formed with a concentric opening 14 which is in alignment, of course, with the axis of the nozzle 11.
Arranged intermediate the cap 12 and the 45 outermost end of the nozzle ll-is a circular diaphragm 15 formed of rubber orany other suitable elastic composition. This diaphragm is of a diameter that its marginal edges may be clamped tightly between the adjacent surfaces of the end of the cap 12 and the nozzle 11. It will be noticed that the center portion of the diaphragm is convex and projects slightly through the opening 14.
Formed centrally of this convex portion of the diaphragm 15 is a slit 16. The inherent elastic (Cl. 22I"60) qualities or characteristics of the diaphragm are such that this slit is normally maintained tightly cl0sed.' However, when pressure is applied to the contents of the tube, the convex portion of the diaphragm expans slightly to permit opening of the slit 16 and consequently discharge of the material in the tube. When the pressure is relieved, the convex portion of the diaphragm contracts to normal position, closing the slit and sealing the nozzle.
When the tubes are filled and packaged for sale, a cork disk 17 is interposed between the diaphragm 15 and the end of the nozzle so as to prevent contact of the tube contents with the diaphragm until the tube is ready for use.
When the tube is ready for use, the cap 12 is removed from the tube by unscrewing it. The removable cork disk is removed from the cap and the cap is again applied to the nozzle as illustrated in Fig. 2. The tube is then ready for use.
As previously stated, by applying pressure to the contents of the tube by collapsing the latter, the diaphragm will expand and the material will discharge in a thin ribbon.
When the pressure on the tube contents is relieved, the diaphragm due to its inherent contractile qualities will assume a normal position closing the slit and thus sealing the nozzle.
Inasmuch as the convex portion of the diaphragm projects just slightly from the opening 35 1:, it can be maintained perfectly clean and san- 1 ary.
In actual practice I have found that this form of automatic closure for container tubes is very satisfactory and one of the main features of it is that it is exceedingly inexpensive to manufacture. Also, it is highly efiicient in operation and, while I have shown the preferred form of my invention, it is to be understood that various changes may be made in its construction by those skilled in the art without departing from the spirit of the invention as defined in the appended claim.
Having thus described my invention, what I claim and desire to secure by Letters Patent is: 00
In combination with a tube of the character described, said tube having a cylindrical nozzle, said nozzle being exteriorly threaded, a cap having a cylindrical portion interiorly threaded whereby it may be threaded on the end of said nozzle, said cap having a convexed end wall, said end wall of the cap having an enlarged opening formed centrally therethrough, the inner surface of the end wall of the cap adjacent the opening being rounded into a shoulder of uniform 0 slope, the outer edge of said opening being circular, a flexible diaphragm of even thickness over its entire area interposed between the cap and the nozzle end, the marginal edge of said diaphragm being adapted to be clamped between the cap and the end of the nozzle, the central portion of the diaphragm being sufiiciently convex to nest within the opening in the cap and project just slightly beyond the exterior surface or end of the cap, said convex portion of the diaphragm being formed with a central slit normally being r
US616771A 1932-06-13 1932-06-13 Closure for collapsible tubes Expired - Lifetime US1935089A (en)

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US616771A US1935089A (en) 1932-06-13 1932-06-13 Closure for collapsible tubes

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3237237A (en) * 1964-04-23 1966-03-01 Harvey L Hager Texture applying device
FR2666308A1 (en) * 1990-08-29 1992-03-06 Oreal DISPENSING DEVICE WITH AUTOMATIC CLOSURE FOR CONTAINER CONTAINING A LIQUID PASTE PRODUCT TO BE DISPENSED.
US7077296B2 (en) 1991-12-06 2006-07-18 Aptargroup, Inc. Dispensing valve

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3237237A (en) * 1964-04-23 1966-03-01 Harvey L Hager Texture applying device
FR2666308A1 (en) * 1990-08-29 1992-03-06 Oreal DISPENSING DEVICE WITH AUTOMATIC CLOSURE FOR CONTAINER CONTAINING A LIQUID PASTE PRODUCT TO BE DISPENSED.
WO1992004244A1 (en) * 1990-08-29 1992-03-19 L'oreal Dispensing device with automatic closure for container holding a liquid or pasty product
US5234138A (en) * 1990-08-29 1993-08-10 L'oreal Self-closing dispenser for a container containing a liquid or pasty product
US7077296B2 (en) 1991-12-06 2006-07-18 Aptargroup, Inc. Dispensing valve

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