Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS3260426 A
Publication typeGrant
Publication dateJul 12, 1966
Filing dateOct 13, 1964
Priority dateOct 13, 1964
Publication numberUS 3260426 A, US 3260426A, US-A-3260426, US3260426 A, US3260426A
InventorsAyotte Robert A
Original AssigneeWheaton Plastics Company
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Container closure comprising a stationary apertured cap and a rotary apertured cap
US 3260426 A
Abstract  available in
Images(1)
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

July 12, 1966 R. A. AYoTTE CONTAINER CLOSURE COMPRISING A STATIONARY APERTURED CAP AND A ROTARY APERTURED CAP Filed OCT.. 13, 1964 Fig.

Fig. 3

INVENTOR Robert A. Ayolfe ATTORNEY United States Patent O 3,260,426 CONTAHNER CLSURE QOMPRISING A STATION- ARY APERTURED CAP AND A ROTARY APER- TURED @AP Robert A. Ayotte, Mays Landing, NJ., assignor to Wheaton Plastics Company, Mays Landing, NJ., a corporation of New Jersey Filed Oct. 13, 1964, Ser. No. 403,476 14 Claims. (Cl. 222-545) This invention relates to dispensing containers and closures therefor, and more particularly to an improved dispensing closure formed of plastic material, and to the combination of such improved closure with a container.

It is an object of this invention to provide an improved two-part dispensing closure assembly, including a fixed part and a movable part, constructed so as to reduce to a minimum any leakage or powder sifting between the two closure parts.

It is another object of the invention to provide a dispensing closure assembly having a more perfect seal between the parts of the closure assembly than in devices of the prior art.

It is a further object of the invention to provide a dispensing closure for a shaker-type dispensing container, such as a powder shaker or the like, in which the closure includes relatively movable parts which may be preassembled prior to being aiiixed to the container.

It is another object of the invention to provide a closure which is adapted to be frictionally secured to a container, but which may be removed Ifrom the container by the applic-ation of a moderate amount of force to thereby permit refilling of the container if desired.

It is another object of the invention to provide a dispensing closure cap assembly for use with dispensing containers such as powder shakers or the like, in which the closure 4assembly includes relatively rotatable parts having a minimum of leakage or sifting therebetween.

In achievement of these objectives, there is provided in accordance with this invention a dispensing closure cap `assembly adapted to be mounted on the neck portion of a container, and including an inner cap member preferably formed of a relatively rigid plastic material such as high impact polystyrene, which is adapted to frictionally engage the neck of the container and to normally remain fixed in position on the container.

An outer cap member also formed of a plastic material, but of a material such as polypropylene more flexible .than the material of the inner cap, and having a good memory for returning to its original shape, is positioned over the inner cap. The inner land outer caps are provided with -a cooperating annular bead and an annular groove by means of which the inner and outer caps are snapped into engagement with each other to maintain the two caps in permanently :assembled relation with each other. The inner and outer caps are so proportioned relative to each other that the annular bead of the inner cap member slightly distorts or exes the outer cap member, so that the flexibility and elastic memory characteristics of the outer member provides -a restoring force which pushes the inner member upwardly into good sealing engagement with the inner surface of the outer cap member. The inner and outer caps or closures are provided with holes which may be moved into registry with each other when the outer cap is rotated relative to the.

fixed inner cap.

The ou-ter cap is also provided with several downwardly depending stubs or lugs which are received in arcuate countersunk recesses in the upper surface of the inner cap whereby the end surfaces of the arcuate recesses define abutments which limit the degree of rotation of the outer cap in moving from closed to open position or vice-versa.

Further objects and advantages of the invention will become apparent from the following description taken in conjunction with the accompanying drawing in which:

FIG. l is a perspective View of a container having the closure cap assembly of the invention mounted thereon;

FIG. 2 is a view in vertical section of the assembled inner and outer caps of the closure assembly;

FIG. 3 is a View in horizontal section taken along line 3-3 of FIGURE 2;

FIG. 4 is a perspective view, partially broken away, of the outer closure cap of the invention;

FIG. 5 is a perspective view, partially broken away, of the inner cap of the closure assembly;

FIG. 6 is a view in vertical section of the outer cap of the closure cap assembly;

FIG. 7 is a view in vertical sec-tion of the inner cap of the closure cap assembly; and

FIG. 8 is a sectional view, partially broken away, showing the interlocking engagement of the inner and outer closure caps.

Referring now to the drawing, there is shown a container generally indicated at 10, having an upstanding reduced diameter neck portion on which is mounted the closure cap assembly generally indicated indicated at 12. The material of which container 10 or the neck portion thereof is made is not critical and may be a plastic material such as polystyrene, as well as other materials such as metal or glass. Closure cap assembly 12 includes an inner cap `member generally indicated at 14 preferably molded of a relatively rigid plastic material, such as high impact polystyrene, and an outer cap member generally indicated at 16, preferably molded of a plastic material having more flexibility than the material of whichinner cap 14 is formed. Outer cap 16 is preferably made of polypropylene or other similar plastic material having good tiexibility and having a good elastic memory for returning :to its original shape when exed or distorted. Outer cap 16 could be molded of high density polyethylene which does not have quite as good an elastic memory as polypropylene. Outer cap 16 may also be made of a suitable elastomeric material having the properties of exibili-ty and good memory just described.

Inner cap 14 is shaped substantially in the form of an inverted cap, including a generally cylindrical wall 18 integrally molded to a top wall 20. The inner diameter of cylindrical wall 18 is such as to provide good frictional tit between inner cap 14 and the neck of container 10. Top wall 20 of inner cap 14 has a plurality of circularly 'arranged shaker holes 22 passing therethrough. The upper surface of wall 20 is molded with a separate circular bead 24 surrounding each of the holes 22. The circular beads 24 provide .a reduced area bearing surface between inner cap 14 and outer cap 16 which maximizes the frictional sealing contact between inner cap 14 and outer cap 16.

The reduced area sealing contact provided by the frictional engagement of rings 24 with the under surface of outer closure 16 provides a better application of the sealing force provided by the restoring force of flexible outer cap 16.

The upper surface of wall `2() is also provided with a plurality of arcuate recesses or countersunk surfaces indicated at 26 which cooperate with depending lugs 40 on outer cap 16 to limit the rotation of the outer cap in moving from dispensing to non-dispensing position and vice versa.

The outer surface of the upper end of inner cap 14 is provided with a radially extending peripheral bead 30 which is received in a groove 43 provided at the upper end of the inner wall surface of the outer closure member 16.

Outer closure member 16 is molded substantially in the form of an inverted cup, and includes a generally cylindrical Iwall 34 and a flat top wall 36. Top wall 36 is provided with a plurality of dispensing holes or passages y38 therethrough lying at the same radial distance from the center of the cap as the radial distance of passages 22 from the center of inner cap 14 so that the holes 38 may be moved into or out of registry with the dispensing holes 22 of the inner cap. Outer cap 16 also includes a pair of downwardly depending lugs 40 which extend downwardly into two of the countersunk arcuate recesses 26 of inner cap 14. While four countersunk recesses 26 are provided in the upper surface of wall 20, lugs 40 engage only two of the recesses 26. The main function of the other two recesses 26 is to facilitate the initial engagement of the two lugs 40 with a pair of recesses, since, in a mass production assembly operation, the provision of extra or spare recesses 26 provides a small time saving in the manipulation required to locate a pair of lugs in a pair of recesses.

Outer cap 16 also includes a bead 42 -which projects radially inwardly a short distance from the inner surface of cylindrical Wall 34 adjacent the upper end thereof. The upper surface of bead 42 and the under surface of the facing top wall 36 of outer cap 16 define a groove 43 which `receives the annular bead 30 at the upper end of inner cap `14.

The outer surface of cylindrical wall 34 lof outer cap 16 is provided with serrations 44 to provide a good frictional surface for gripping the outer cap when rotating the cap.

The inner and outer caps 14 Iand 16 are assembled relative to each other by inserting the inner cap into the outer cap, forcing the annular flange or bead 30 of the inner cap past the inner bead 42 of the outer cap and into groove 43 to thereby lock the two caps against axial movement relative to each other. The depending lugs of outer cap 16 are received in a pair of the arcuate countersunk recesses 26 of the inner cap. The cap assembly may then be engaged with the neck portion of the container by pushing the inner cap 14 of the assembly into frictional engagement with the neck of container 10.

The inner and outer caps are so dimensioned relative to each other that when inner cap 14 is engaged with outer cap 16 as just described, with bead 30 of the inner cap received in groove 43 of the outer c-ap, the flexible outer cap is slightly fiexed or distorted in the region of -bead 42 and groove 43 by the presence of inner cap 14. This flexing of outer cap 16 causes the outer cap to push inwardly and upwardly to cause a resultant force which constantly urges inner cap 14 and the sealing rings 24 thereof into tight sealing engagement with the under surface of wall 36 of outer closure cap 16.

When it is desired to dispense the contents of a container 10, the outer cap 16 is rotated to a position in which the dispensing holes or passages 38 in the outer cap are in registry with the dispensing holes 22 of the inner cap, this position being indicated by the abutment of the depending lugs or stubs 40 with one end of the countersunk recesses 26 of the inner cap. The outer cap may be moved from the dispensing position to a nondispening position by moving the cap in the opposite direction to a limiting position defined by the engagement of the depending lugs or stubs 40 with the opposite end Walls of the recesses 26.

While the degree of frictional engagement between the inner cap 14 and the neck of the plastic container 10 is sufiicient to maintain the cap assembly 12 securely in position on the container at all times, the cap assembly may be removed by the consumer if desired for refilling container by exerting a moderate amount of force to remove the cap assembly from the neck of the container.V

The closure hereinbefore described has the advantage that the improved seal between the inner and outer closure caps reduces to a minimum any leakage or sifting of CTI 4l the contents of the container, the restoring force of outer cap 16 constantly biasing the sealing rings 24 of the inner cap 14 into tight sealing engagement with the under surface of top wall wall 36 of outer cap 16. Also, the snap engagement between the inner and outer caps permits these two cap members to be preassembled as a unit and shipped in bulk to the location where the caps are to be assembled onto the containers. The preassembly of the inner and outer caps eliminates one assembly-line operation at the location where the closure assembly is assembled onto the container.

While there has been shown and described a particular embodiment of the invention, it will be obvious to those skilled in the art that various changes and modifications may be made therein without departing from the invention and, therefore, it is aimed to cover all such changes and modifications as fall within the true spirit and scope of the invention.

What I claim as my invention is:

1. A dispensing closure assembly for a container comprising an inner cap member having a first body portion engageable with the open end of a container, a first end wall integral with said first body portion at an axial end of said first body portion, said first end wall including dispensing openings therein, an outer cap member adapted to receive said inner cap member and having a second body portion integral with a second end wall at an axial end of said second body portion, said second end wall having dispensing openings therein movable into registry with said dispensing openings of said rst end wall by movement of said outer cap member relative to said inner cap member, one of said cap members having a peripheral bead integral with its respective body portion adjacent the end wall thereof, the other of said cap members having groove means on the body portion thereof adjacent the end wall thereof adapted to receive said peripheral bead of said one cap member, whereby to interlockingly engage said cap members with each other, one of said cap members being formed of a flexible material having a good elastic memory, said outer and inner cap members being so proportioned that said cap member formed of fiexible material is flexed by the presence of the other cap member in interlocked engagement therewith, whereby said cap member of fiexible material exerts a force urging said first and second end walls in sealing relation to each other.

2. A dispensing closure assembly as defined in claim 1 in which said first body portion is dimensioned to frictionally engage the open end of a container.

3. A dispensing closure assembly as defined in claim 1 in which said outer cap member is molded of polypropylerie.

4. A dispensing closure assembly as defined in claim 1 `in which said inner cap member is molded of polystyrene.

5. A dispensing closure assembly as defined in claim 1 in which each of said cap members carries a stop means cooperating with a stop means on the other cap member to limit the relative movement of said cap members in an opening and in a closing direction.

6. A dispensing closure assembly for a container comprising an inner cap member having a first cylindrical body portion engageable with the neck of a container, a first end wall integral with said first body portion at an axial end of said first =body portion, said first end wall including dispensing openings therein, an outer cap member adapted to receive said inner cap member and having a second cylindrical body portion integral with a second end wall at an axial end of said second body portion, said second end wall having dispensing openings therein movable into registry with Said dispensing openings of said first end wall by rotary movement of said outer cap member relative to said inner cap member, one of said cap members having a radially extending peripheral bead integral with its respective body portion adjacent the end wall thereof, the other of said cap members having groove means on the body portion thereof adjacent the end wall thereof adapted to receive said radially extending peripheral bead of said one cap member, whereby to interlockingly engage said cap members with each other, one of said cap members being formed of a flexible material having a good elastic memory, said outer and inner cap members being so proportioned that said cap member of flexible material is flexed by the presence of the other cap member in interlocked engagement therewith, whereby said cap member of flexible material exerts a force urging said first and second end walls in sealing relation to each other.

7. A dispensing closure assembly as defined in claim 6 in which said first cylindrical body portion is dimensioned to frictionally engage the neck of a container.

8. A dispensing closure assembly as defined in claim 6 in which said outer cap member is molded of polypropylene.

9. A dispensing closure assembly Ias defined in claim 6 in which said inner cap member is molded of polystyrene.

10. A dispensing closure assembly as defined in claim 6 in which each of said cap members carries a stop means cooperating with Ia stop means on the other cap member to limit the relative movement of said cap members in an opening and in a closing direction.

11. A dispensing closure assembly for a container comprising an inner cap member having a first cylindrical body portion engageable with the neck of a container, a first end wall integral with said first body portion at an axial end of said first body portion, said first end wall including dispensing openings therein, a radially extending peripheral bead integral with said first body portion adjacent said end Wall, an outer cap member adapted to receive said inner cap member and having a second cylindrical body portion integral with a second end wall at an axial end of said second body portion, said second end wall having dispensing openings therein movable into registry with said dispensing openings of said first end wall by rotary movement of said outer cap member relative to said inner cap member, said outer cap member having groove means on the inner surface of said second cylindrical body portion to receive said radially extending peripheral bead of said inner cap member, whereby to interlockingly engage said cap members with each other one of said cap members being formed of a flexible material having ya good elastic memory, sa-id outer and inner cap members being so proportioned that said cap member of flexible material is flexed by the presence of said other cap member in interlocked eng-agement therewith, whereby said cap member of flexible material exerts a force urging said first and second end walls in sealing relation to each other.

12. A dispensing closure assembly for a container comprising an inner cap member having a first cylindrical body portion engageable with the neck of a container, a first end wall integral with said first body portion at an axial end of said first body portion, said first end wall including dispensing openings therein, an outer cap inember adapted to receive said inner cap member and having a second cylindrical body portion integral with a second end wall at an axial end of said second body portion, said second end wall having dispensing openings therein movable into registry with said dispensing openings of said first end wall by rotary movement of said outer cap member relative to said inner cap member, the end wall of one of said cap members being provided with a recess means and the end wall of the other of said cap memibers being provided with lug means engageable with said recess means to limit the relative rotary movement of said cap members -in an opening and in a closing direction, one of said cap members having a radially extending peripheral bead integral with its respective body portion adjacent the end wall thereof, the other of said cap members having groove means on the body portion thereof adjacent the end wall thereof adapted to receive said radially extending peripheral bead of said one cap member, whereby to interlockingly engage said cap members with each other, one of said cap members being formed of a flexible material having `a lgood elastic memory, said outer and inner cap members being so proportioned that said cap member formed of flexible material is flexed by the presence of said other cap member in interlocked engagement therewith, whereby said cap member formed of flexible material exerts a force urging said first and second end Walls in sealing relation to each other.

13. A dispensing closure assembly for a container comprising an inner cap member having a first cylindrical body portion engageable with the neck of a container, a first end wall integral with said first body portion at an axial end of said first body portion, said first end wall including dispensing openings therein, a radially extending peripheral bead integral with said first body portion adjacent said end wall, an outer cap member adaptedto receive said inner cap member and having a second cylindrical body portion integral with a second end wall at an axial end of said second body portion, said second end wall having dispensing openings therein movable into registry with said dispensing openings of said first end wall by rotary movement of said outer cap member relative to said inner cap member, said inner cap member having the outwardly directed surface of the end wall thereof provided with countersunk recess means, said outer cap member having the inwardly directed surface of the end wall thereof provided with lug means engageable with said countersunk recess means to limit the relative rotary movement of said cap members in an opening and in a closing direction, said outer cap member having groove means on the inner surface of said second cylindrical body portion adjacent the end wall thereof to receive said radially extending peripheral bead of said inner cap member, whereby to interlockingly engage said cap members with each other, said outer cap member being formed of a flexible material having a good elastic memory, said outer and inner cap members being so proportioned that said outer cap member is flexed by the presence of said inner cap member in interlocked engagement therewith, whereby said outer cap member exerts a force urging said rst end wall in sealing relation toward said second end wall, the end walls of said inner and outer cap members being provided with a plurality of reduced area bearing surfaces therebetween whereby to concentrate the sealing force between said inner and outer cap members at said reduced area bearing surfaces, said reduced area bearing surfaces extending respectively as a bead means around the respective dispensing holes of one of said cap members.

14. A dispensing closure assembly for a container comprising an inner cap member having a first body portion engageable with the open end of a container, a first end wall integral with said first body portion at an axial end of said first body portion, said first end wall including dispensing openings therein, an outer cap member adapted to receive said inner cap member and having a second body portion integral With `a second end wall at an axial end of said second body portion, said second end wall having dispensing openings therein movable into registry with said dispensing openings of said first end wall by movement of said outer cap member relative to said inner cap member, the end wall of one of said cap members being provided with a recess means and the end wall of the other of said cap members being provided with lug means engageable with said recess means to limit the relative rotary movement of said cap members in an opening and in a closing direction, one of said cap members having a peripheral bead integral with its respective body portion adjacent the end wall thereof, the other of said cap members having groove means on the body portion thereof adjacent the end wall thereof adapted to receive said peripheral bead of said one cap member, whereby to interlockingly engage said cap members with each other, one of said cap members being formed of a flexible material having a good elastic memory, said outer and inner cap members being so proportioned that said cap member formed of flexible material is exed by the presence of the other cap member in interlocked engagement therewith, whereby said cap member formed of flexible material exerts a force urging said end walls in sealing relation with each other, the end walls of said inner and outer cap members being provided with a plurality of reduced area bearing surfaces therebetween whereby to concentrate the sealing force between said inner and outer cap members at said reduced area bearing surfaces, said reduced area bearing surfaces extending respectively as a bead means around the respective dispensing holes of one of said cap members.

References Cited by the Examiner UNITED STATES PATENTS 2,064,308 12/1936 Hopkins 222-248 X 2,159,714 5/1939 Serog 222-248 X 2,206,209 7/1940 Thorn 222-248 2,780,395 2/1957 Schlabach et al. 222-248 X 2,969,167 1/1961 Libit 222-248 X 3,104,039 9/1963 Dike 222-248 X 3,125,260 3/1964 Dreps 222-548 ROBERT B. REEVES, Primary Examiner'.

WALTER SOBIN, Examiner.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2064308 *Mar 7, 1935Dec 15, 1936Nat Can CompanyShaker top can
US2159714 *Jan 26, 1938May 23, 1939Leopold SerogTube
US2206209 *Mar 2, 1938Jul 2, 1940Thorn Percy MClosure for receptacles
US2780395 *Nov 14, 1952Feb 5, 1957Bockius Louis VContainer closure construction
US2969167 *Apr 17, 1957Jan 24, 1961Libit Sidney MCombined closure and spout for a fluid dispensing receptacle
US3104039 *Apr 12, 1960Sep 17, 1963Continental Can CoPlastic captive seal closure and spout
US3125260 *Jan 19, 1961Mar 17, 1964 Shaker or sifter-type dispensers
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3467287 *May 23, 1967Sep 16, 1969Rexall Drug ChemicalRotatable closure assembly with rim
US3718239 *Feb 23, 1971Feb 27, 1973Fairfield Plastics IncDispenser with turn cap
US3893593 *Oct 29, 1973Jul 8, 1975Polytop CorpChild-resistant closure using a plurality of rotatable closure members
US4823995 *Jan 4, 1988Apr 25, 1989Continental Plastics, Inc.Container cap
US5184746 *Feb 26, 1992Feb 9, 1993Phoenix Closures, Inc.Closure cap and fitment assembly
US5383582 *Mar 18, 1994Jan 24, 1995Weatherchem CorporationSift-resistant dispensing closure
US5680968 *Feb 13, 1997Oct 28, 1997Phoenix Closures, Inc.Container closure system
US6202902 *Nov 12, 1999Mar 20, 2001Robert StarrPowder-containing sifter bottle
US7438204 *Oct 13, 2005Oct 21, 2008S. C. Johnson & Son, Inc.Apparatus for dispensing a granular product from a container
US20050252456 *Feb 2, 2005Nov 17, 2005Mag-Life LlcParticulate dispenser
US20070084885 *Oct 13, 2005Apr 19, 2007Conway Simon MApparatus for dispensing a granular product from a container
US20070084886 *Oct 13, 2005Apr 19, 2007Broen Nancy LMethod and apparatus for dispensing a granular product from a container
US20100176080 *Jun 2, 2008Jul 15, 2010Merck Patent GesellschaftClosure with membrane and rotatable protective cap
DE102004018112A1 *Apr 14, 2004Nov 17, 2005Bulthaup Gmbh & Co. KgSalt- or pepper pot has screw lid with dispensing hole, cap fitting over lid and part of pot and being rotated so that second hole coincides with dispensing hole when pot is used
DE102004018112B4 *Apr 14, 2004May 7, 2009Bulthaup Gmbh & Co. KgVorrichtung zur Abgabe eines Gutes, insbesondere Gewürzstreuer
Classifications
U.S. Classification222/545, 222/548
International ClassificationB65D47/26, B65D47/04
Cooperative ClassificationB65D47/265
European ClassificationB65D47/26D4