US 2961119 A
Abstract available in
Claims available in
Description (OCR text may contain errors)
Nov. 22, 1960 c. F. LEACH CLOSURE DEVICES INVENTOR I Charies F. Leach I ll 7 1 til/VIII Filed NOV. 25, 1957 ll Ill/All ATTORNEY United States Patent CLOSURE DEVICES Charles F. Leach, 6431 Lakehurst, Dallas, Tex. Filed Nov. 25, 1957, Ser. No. 698,657
2 Claims. (Cl. 220-30.6)
This invention relates to closure devices.
This application is a continuation-in-part of my copending application, Serial No. 657,538 filed May 7, 1957, now Patent No. 2,937,781, granted May 24, 1960.
An object of this invention is to provide a new and improved closure device.
Another object of this invention is to provide a new and improved tamper proof closure device.
Another object of this invention is toprovide anew and improved tamper proof captive closure device.
Still another object is to provide a new and improved closure device for receptacles or the like having a threaded portion by means of which the closure device may be secured thereto.
Still another object is to provide a closure device of the type described above which may be permanently secured to the, receptacle and be movable between a closed position wherein it closes the opening of the receptacle and an open position wherein the opening of the receptacle is open to permit substances to be inserted into or removed from the receptacle through the opening.
A still further object is to provide a new and improved closure device of the type described above which may be screwed on the threaded portion of the receptacle into closed position and which may be unscrewed to an open" :1 vice of Figure l; I
Another object is to provide a new and-improved closure device of the type described above which has a retainer portion slidably and rotatably mountedon a receptacle and a top portion resiliently secured to the re-. tainer portion which may be screwed on a threaded portion of the receptacle.
Still another object is to provide a new and improved unitary closure device having a retainer portion permauently securable to a receptacle or the like and having an internally threaded top portion pivotally secured to the retainer portion.
Still another object is to provide a new and improvedclosure device of the type described above wherein the retainer portion is provided with a lower internal flange positionable on the lower side of an external flange of the receptacle whereby the retainer portion is secured to the receptacle.
Still another object is to provide a new and improved closure device of the type described above wherein the internal flange of the retainer portion is adapted to be distorted in one direction to permit passage thereof over the external flange of the receptacle in one direction but which resists distortion in the opposite directionwhereby the retainer portion may be easily mounted on ceptacle but cannot be easily removed therefrom.
Still another object is to provide a new and improved closure device having a retainer portion provided with means for permanently but movably securing it to a re ceptacle and a top portion pivotally connected to the re-. tainer portion, the closure device being rotatable as a. whole to move the top. portion to receptacle closing -and receptacle opening positions.
the re 2,961,119 Patented ov. 22,1960
Another object is to provide a closure device which will provide visual indication of having been opened.- Still another object is to provide anew and improved closure device, of the type described above, wherein the top portion is connected to the retainer portion by a connecting pivot portion whereby the top portion may pivot about an axis perpendicular to the longitudinal axis of the retainer portion.
A further object is to provide a new and improved closure device, of the type described above, wherein the top portion and the retainer portion are provided with means releasably preventing pivotal movement of the top portion relative to the retainer portion and givinga visual indication of having been opened once such pivotal open ing movement of the top portion has occurred.
A still further object of the invention is to provide 'a new and improved closure device, of the type described connecting link.
A still further object is to provide a new and improved closure device, of the type described above, wherein the top portion is'provided with an annular recess for receiving the'top end portion of a container it closes to provide three separate sealing contacts between the topportion and the container. 1
Other objects and a fuller understanding of the inven-' tion may be had by referring to the following description and claims taken in conjunction with the accompanying drawing in which like parts are designated by like refmodified form of the closure device; and,
erence characters and in which:
Figure 1 is a perspective view of a closure device embodying the invention; 1 Figure 2 is a vertical sectional view of the closure de- Figure 3 is a sectional view taken on line-3-3 of Figure 4; 1 Figure 4 is a-vertical sectional view of the closure devic'ein closed position on a receptacle; g
Figure 5 is a vertical sectional view showing the closure, device after the connecting link has been separated andi the closure'device rotated to unscrew the top portion, from the receptacle; "Figure 6 is a horizontal sectional view showing (a;
another modified form of the closure device. p Referring now particularly to Figures 1 thru 4 of the drawing, the closure device 10 is shown mounted on the neck 11 of a receptacle or container 12. The closure de-'.- vice 10 is preferably formed of a single piece of suitable" resilient substance, such as plastic, and includes a tubu lar retainer portion 15 and a top portion 16 connected to the retainer portion by a substantially flat connecting link portion 17. The retainer portion 15 is provided with" an annular flange 20 on its lower end which is disposed below an external downwardly curved flange 22 of neck 11v of the receptacle 12. The lower flange 2t} preferably curved arcuately inwardly and upwardly so j that itdistorts or flexes easilyupwardly when engaged by the upper convex arcuate surface.23 of the external flange.
Figure 7 is a horizontal sectional view showing stil l' 22, as the retainer portion 15. of. the closure deviceiis pressed on the neck 11 but resists anyvdistortion andany.
movement in the opposite direction on the neck 11 when a,9e1,119, p a
3 it engages thelower concave surface 24 of the external flange.
It will thus be seen that the retainer portion 15 may beeasilypressed or forced. down overthe neck 11 to the pos tion'showniinFigures 4 and ,5, the arcuate surfaces of the internal'flange 20 of the retainer portion and of the external flange 22 of the neck 11 cooperating to flex or distort the lower flange outwardly during such downward movement of the retainer portion 15 over the neck 11 of the receptacle'or container. It will be apparent that the retainer portion is movable vertically on the neck 11, its upward movement being limited by the engagement of the flanges of the retainer portion and of the 1:teck and that the retainer portion is rotatable on the nec i The top portion 16 has a downwardly opening threaded bore 25 which is adapted to receive the threaded portion 26 of the neck 11 of the receptacle to close the upper end thereof. The top portion, is also provided with an internal stopper portion 27 extending inwardly in the bore and spaced from the cylindrical wall thereof to provide an annular channel 28 in which the top most end of the neck 11 of the receptacle is received. The cylindrical wall 29 of the stopper portion 27 and the cylindrical wall 30 of the top portion abut the inner and outer surfaces of the top end portion of the neck 11 whereby a fluid tight seal is obtained to prevent passage of fluids between the top portion 16 and the neck 11 of the receptacle. It will thus be seen that the top portion 16 provides three separate sealing surfaces 28, 29 and 30 which provide an optimum sealing of the container.
The top portion 16 is held in axial alignment with the retainer portion 15 bya separable connecting link 32 positioned diametrically opposite the connecting pivot portion 17 between the top portion 16 and-the retainer portion 15 and integral therewith. The outer surfaces of the top portion and the retainer portion are free of protuberances and present a smooth continuous surface.
In use, the closure device 10 is positioned on the neck 11 of the receptacle as shown in Figures 4 and 5, the internal annular flange 20 of the retainer portion and the external flange 22 permitting limited axial movement of the closure device on the neck of the receptacle. When it is desired to open the receptacle, the connecting link 32 may first be separated by inserting a cutting. instrument in one of the slots 33 disposed between the links 17 and 32 and then separating the connecting link 32. The entire closure device may then be rotated to unscrew the top portion 16 from engagement with the threaded portion 26 of the neck 11 During such rotational movement of the entire closure device, the top portion and the retaining portion move upwardly on the neck 11 until the top portion is out of engagement with the'threaded portion 26 and is free to pivot to the open position.
The closure device can be easily moved to a positively closed position by pivoting the top portion about the pivotportion 17 back to its original position and then rotating the entire closure device to cause the top portion to screw on the threaded portion of the neck 11. The closure device remains captive to the receptacle even after having been opened, since the retainer portion flange 20 and the external flange 23 of the container or receptacle prevent removal of the closure device from the receptacle.
It. will be apparent that the closure device 10 is a tamper proof closure device since the container or receptacle can be opened to remove the contents therefrom only by separating or breaking the connecting link 33 which will then give an obvious visual indication that the receptacle has been opened. At the same time, the closure device permits reclosing of the receptacleeven though the closuredevice has once been opened. The closure dcvice-10' may also be moved to .open position by first rotating the entire closure device to unscrew the top por tion 16 from engagement with the threaded portion 26 of the neck 11 and then exerting a strong lateral twisting force on the side of the top portion opposite to the pivot portion 17 to forcibly separate the connecting link 32 apart thus freeing the top portion for pivotal movement about the pivot portion 17.
In order to facilitate such. separation of the connecting link 32, it may be made of a thickness substantially smaller than that of the top portion'of the retainer portion. In Figure 6 is illustrated a modified form of the closure device illustrated in Figures 1 thru wherein the single connecting link 32 of the closure device is replaced by a plurality of circumferentially spaced conmeeting links 32a which are of substantially lesser thickness than the single link 32. If desired such links 32a may be threadlike in configuration. The connecting links 32a are separated with an instrument or are broken by a strong twisting movement of the top portion 15 relative to the top retainer portion 16 in the same manner as described above.
In Figure 7 is illustrated still another modified form of the closure device wherein the single connecting link 32 of the closure device illustrated in Figures '1 thru 5 is replaced by a plurality of circumferentially spaced connecting links 32b which are spaced inwardly from the outer peripheral surface of the top portion and of the retainer portion whereby a groove is defined thereby which facilitates insertion of a cutting instrument between the top portion and the retainer portion. In addition, the links 32b are of lesser thickness than either the link 32 or the links 32a whereby a force of lesser degree 1 may accomplish the separating of the connecting links.
It will now be seen that a new and improved closure device has been illustrated and described which includes a retainer portion slidably mounted on the receptacle for limited axial movement thereon and a top portion integrally connected with the retainer portion and threadedly connectable with the receptacle. It will also be apparent that the top portion is screwed on the receptacle when in the closed position and that it remains captive to the receptacle, and cannot be separated therefrom even after having been unscrewed since it is integrally connected to the retainer portion by the hinge portion andsince the retainer portion is held on the neck of the receptacle by the engagement of its internal annular flange 20 with the external annular flange 22 of the receptacle.
It will also be seen that releasable means, such as the connecting links 32, 32a, and 32b have been provided to hold the top portion in closed position and in axial alignment with the retainer potrion. It will also be apparent that the top portion may be pivoted to an open position out of axial alignment with the retainer portion once the connecting links 32 have been separated from the retainer portion.
It will also be seen that the entire closure device may be simultaneously horizontally and vertically movable on the container during opening and closing operations, and also when the top portion is free of the threads of the receptacle.
It will also be apparent that the closure device 10 may be formed of a suitable resilient plastic, preferably molded as a single integral unit.
It will also be seen that the new and improved closure devices illustrated and described are easily and permanently mounted on any receptacle having a threaded end portion and an external flange positioned remote from the end portion, the lower flange of the retainer portion flexing as the retainer portion is telescoped over such end portion and external flange but engaging such external flange when the retainer portion is moved in the opposite direction to prevent removing the closure device from the end portion of the receptacle. It will thus be seen that a closure'device has been illustratedhnd described which is captive to the receptacle but has a top portion which is disengageable from the receptacle while still captive to it to permit dispensing of substances from such container.
It will also be apparent that the closure device may be employed on receptacles of various shapes and sizes such as collapsible tubes, jars, bottles and the like.
It will be apparent that various changes and modifications may be made in the above illustrated and described forms of the invention Without departing from the invention and it is intended in the appended claims to cover all such changes and modifications that fall within the true spirit and scope of the invention.
What I claim is new and desire to secure by Letters Patent of the United States is:
1. In combination with a receptacle having a threaded end portion and an external flange disposed near said threaded end portion, a closure comprising: a retainer portiong telescopable over said end portion; means on said retainer portion engageable with said external flange to prevent removal of said closure device from said receptacle, said retainer portion being mounted on said receptacle for limited longitudinal movement relative to said end portion; a top portion connected to said retainer portion by a flexible member integral with said top portion and said retainer portion, said top portion being threaded whereby it may engage said threaded end portion to close said receptacle, said means on said retainer portion being adjacent one end thereof remote from said top portion; and releasable means securing the top portion to the retainer portion against pivotal movement reltaive to said retainer portion about said flexible memher.
2. The closure device of claim 1 wherein said releasable means comprises a severable means connecting said top portion to said retainer portion.
References Cited in the file of this patent UNITED STATES PATENTS 639,832 Shearman Dec. 26, 1899 2,043,226 Beider et al June 9, 1936 2,114,925 Kaneshige Apr. 19, 1938 2,168,822 Fink Aug. 8, 1939 2,581,849 Fisch Jan. 8, 1952 FOREIGN PATENTS 710,149 Germany Sept. 5, 1941 472,739 Canada Apr. 10, 1951 664,847 Great Britain Jan. 16, 1952