Product dispensing cover

Information

  • Patent Grant
  • 6196747
  • Patent Number
    6,196,747
  • Date Filed
    Thursday, December 21, 1995
    29 years ago
  • Date Issued
    Tuesday, March 6, 2001
    23 years ago
Abstract
A dispensing cover for a cream or gel product contained in a sleeve with an elevator platform for advancing the product toward the cover. The cover includes a dome portion having at least one passageway to permit the product to pass through the cover for dispensing. A weakened area about the periphery of the cover permits the dome portion to flex downwardly into contact with the product when a force is exerted against the cover, and to return to its original unflexed position with an air gap between the dome part and the product when the force is removed from the cover.
Description




BACKGROUND OF THE INVENTION




1. Field of the Invention




This invention relates generally to product dispensers, and more particularly, to a dispensing cover for dispenser for a cream or gel deodorant product in which the product is advanced within a sleeve to such a dispensing cover.




2. Description of Related Art




Dispensers including a generally cylindrical sleeve and product advancing means are known for dispensing cream or gel products contained within the sleeve. Such dispensers commonly are used for deodorant products which are advanced within the sleeve by movement of an elevator platform or the like so that the product is presented at a dispensing end of the sleeve.




Certain of such dispensers are provided with a dispensing cover positioned over the dispensing end of the sleeve containing the product. The dispensing cover is provided with one or more passageways through which the cream or gel product is extruded as the elevator platform is advanced. The product thereby is presented to the external surface of the cover to be dispensed as intended, such as to the skin of a user of the deodorant product.




An undesirable side effect of dispensing cream or gel product in such dispensers is that after the product has been dispensed, residual pressure against the product within the sleeve causes the product to continue to creep through the passageways and out to the external surface of the dispensing cover. This results in product waste and undesirable product remaining to be removed from the dispensing cover surface prior to storage of the dispenser.




Attempts have been made to prevent the undesirable waste of product due to creeping during use of dispensers of the type referred to herein. These attempts have involved dispensers incorporating springs, ratchet bars, oscillating feed screws and similar complicated structure which do not satisfactorily obviate the problem.




Accordingly, it is desirable to provide a dispenser for a cream or gel product which prevents undesirable waste of the product due to creeping thereof after dispensing is completed, which dispenser is relatively simple in design, uncomplicated in construction and which readily can be manufactured with a minimum number of parts and is sturdy in construction for repeated use without failure.




SUMMARY OF THE INVENTION




The invention provides a dispensing cover for a cream or gel product dispenser which includes a sleeve within which the product is contained. An elevator platform or the like is positioned within the sleeve at a location opposite the dispensing cover. The cover includes a dome portion having at least one passageway to permit the product to pass through the cover to the external surface thereof as the platform is advanced within the sleeve. The cover is formed with a depending skirt portion co-joined with the dome portion and a weakened area about the periphery of the dome portion proximate its joinder with the skirt portion to permit the dome portion to flex downwardly into contact with the product when a force is exerted against the external surface of the cover, and to return to its original unflexed position with an air gap between the dome part and the product when the force is removed from the cover.











BRIEF DESCRIPTION OF THE DRAWINGS





FIG. 1

is a perspective view of a dispenser with an overcap thereof partially broken away to show one embodiment of the dispensing cover of the invention;





FIG. 2

is a format elevational view, partially in longitudinal section, showing the dispenser of

FIG. 1

;





FIG. 3

is a side elevational view, partially in longitudinal section, showing the dispenser of

FIG. 1

;





FIG. 4

is a plan view of the underside of the dispensing cover shown in

FIG. 1

in which the passageways are formed by apertures;





FIG. 5

is a plan view of the underside of an alternate embodiment of the dispensing cover of the invention in which the passageways are formed by slots;





FIG. 6

is a fragmentary view of another alternate embodiment of the dispensing cover of the invention in which the passageways are formed by cross slits;





FIG. 7

is a fragmentary view of a further alternate embodiment of the dispensing cover of the invention in which the passageways are formed by a single slit;





FIG. 8

is an enlarged fragmentary longitudinal sectional view showing the dispensing cover illustrated in

FIG. 1

in each of its flexed and unflexed positions;





FIG. 9

is a fragmentary view similar to that of

FIG. 8

showing an alternate embodiment of the dispensing cover of the invention;





FIG. 10

is a view similar to that of

FIG. 9

showing a further alternate embodiment of the dispensing cover of the invention;





FIG. 11

is a view similar to that of

FIG. 9

showing a further alternate embodiment of the dispensing cover of the invention;





FIG. 12

is a view similar to that of

FIG. 9

showing a further alternate embodiment of the dispensing cover of the invention;





FIG. 13

is a view similar to that of

FIG. 9

showing a further alternate embodiment of the dispensing cover of the invention;





FIG. 14

is a view similar to that of

FIG. 9

showing a further alternate embodiment of the dispensing cover of the invention;





FIG. 15

is a view similar to that of

FIG. 9

showing a further alternate embodiment of the dispensing cover of the invention;





FIG. 16

is a view similar to that of

FIG. 9

showing a further alternate embodiment of the dispensing cover of the invention;





FIG. 17

is a longitudinal sectional view of a dispenser, with the sleeve thereof partially broken away, and the dispensing cover of the invention thereof showing a first stage of dispensing of the product contained therein;





FIG. 18

is a view similar to that of

FIG. 17

showing a subsequent stage of dispensing of the product;





FIG. 19

is a view similar to that of

FIG. 17

, partially fragmented, showing a subsequent stage of dispensing of the product;





FIG. 20

is a view similar to that of

FIG. 19

showing a subsequent stage of dispensing of the product;





FIG. 21

is a view similar to that of

FIG. 19

showing a subsequent stage of dispensing of the product; and





FIG. 22

is a view similar to that of

FIG. 19

showing a subsequent stage of dispensing of the product.











DESCRIPTION OF THE PREFERRED EMBODIMENTS




Referring to

FIGS. 1-4

,


8


and


17


-


22


, the dispensing cover


10


of the invention is shown installed upon the upper dispensing end


12


of sleeve


14


of product dispenser


16


. The manner of attachment of dispensing cover


10


to sleeve


14


can be by force-fit, adhesion or the like, of depending flange


11


of cover


10


over the external surface


13


of dispensing end


12


of sleeve


14


. Terminal portions


15


of cover


10


can rest on ledge


17


formed on end


12


for positioning purposes. A removable overcap


19


may be provided to be positioned over cover


10


with terminal portions


21


resting on ledge


17


until the overcap is removed by the user of dispenser


16


prior to use.




A cream or gel product


18


, such as (but not limited to) deodorant, is contained within sleeve


14


for dispensing by a user in conventional manner, such as by rotation of hand wheel


20


at the lower end


22


of the sleeve to rotate screw


24


and thereby raise connected elevator platform


26


and advance the product


18


toward dispensing end


12


. It is to be understood that the structure for advancing product


18


within sleeve


14


toward dispensing end


12


does not form a part of the present invention, and that such advancement can be accomplished in any conventional manner, such as by the screw


24


and elevator platform


26


mechanism illustrated in the drawings.




Dispensing cover


10


preferably is formed of resilient material, such as plastic, and includes a dome portion


30


of generally outwardly-bowed configuration connected to depending skirt or flange


11


having terminal portions


15


which are installed upon dispensing end


12


of sleeve


14


. The dome portion


30


is joined to skirt


11


by a weakened or thinned area


34


formed about the outer peripheral edge


35


of the dome portion


30


. The thickness of the wall stock from which cover


10


is formed can vary. It is important only for purposes of the present invention that the thickness of weakened or thinned area


34


be less than at least some of the remaining portions of cover


10


.




The weakened area


34


is provided by a thinned wall corner


36


which is formed on the underside surface


38


of cover


10


between outer peripheral edge


35


and a line


37


positioned inwardly and generally concentric to said edge


35


. One or more passageways


40


, such as apertures


41


, are formed in dome portion


30


between the top surface


42


and underside surface


38


of the dome portion


30


to permit product


18


to pass therethrough when dispensing thereof is to be effected. The passageways


40


are arranged in the area of dome portion


30


between the central highest location


44


thereof and the line


37


defining the inner terminus of weakened area


34


.




By reason of the weakened area


34


formed about the corner


36


of cover


10


, dome portion


30


is capable of flexing between a first, relaxed or unflexed position A shown in solid line in

FIG. 8

, to a second, flexed position B shown in broken line in FIG.


8


. Such flexing between positions A and B will occur when a force F is exerted against the top surface


42


. Flexing of cover


10


as shown in

FIG. 8

results in the dome portion moving toward product


18


contained within sleeve


14


. Upon release of the force F against top surface


42


, since cover


10


is formed of resilient material, dome portion


30


will return to its unflexed position A away from product


18


.




The flexing capability of cover


10


between positions A and B enables the dispenser


16


to be used without waste of product due to creeping within sleeve


14


, as illustrated best in

FIGS. 17-22

. In

FIG. 17

, cover


10


is shown in its unflexed position A with product


18


contained in sleeve


14


and an air gap


50


between the underside surface


38


of dome portion


30


and the upper surface


52


of the product. A user will rotate screw


24


by turning hand wheel


20


to advance elevator platform


26


a distance “X” (

FIG. 18

) above the lower wall


54


of sleeve


14


and thereby move the upper surface


52


of product


18


to a position proximate underside surface


38


of dome portion


30


. The size of the air gap


50


thereby is diminished from that shown in

FIG. 17

to a smaller size as seen in FIG.


18


.




The user next applies the top surface


42


of dome portion


30


to his or her skin surface


56


so that force F is exerted against the top surface


42


and thereby move dome portion


30


to its flexed position B in which there is no air gap between underside surface


38


of dome


30


and upper surface


52


of product


18


, but instead the underside surface


38


engages against the upper surface


52


of product


18


. Product


18


thereby is caused to pass through passageways


40


to be dispensed to the skin surface


56


of the user, and such dispensing is caused to be effected over a length of the user's skin by moving dispenser


16


along the skin surface as shown in

FIG. 20

where a film of product


18


′ is illustrated on the user's skin after passing through passageways


40


and behind the direction D of movement of dispenser


16


.




Upon completion of dispensing of product


18


by the user, the dome portion


30


is withdrawn from the user's skin surface


56


. The force F thereby is relieved and the dome portion


30


relaxes to its unflexed position A as seen in

FIG. 21

, resulting in air gap


50


recurring between the underside surface


38


and the top surface


52


of product


18


so that product


18


does not continue to pass through passageways


40


.




As previously explained, residual pressure against product


18


within sleeve


14


after completion of dispensing as seen in

FIG. 21

causes the product to continue to move or creep so that the top surface


52


of the product advances toward the underside surface


38


of the cover


10


. However, by reason of the air gap


50


which occurs between surface


38


and surface


52


after dispensing and when cover


10


assumes its unflexed position A, such post-dispensing creeping C of the product merely fills the air gap, as seen in

FIG. 22

, and product does not continue to pass through passageways


40


. Thereby, product waste is avoided and the top surface


42


of cover


10


remains clean without the necessity to remove excess product therefrom prior to storage of the dispenser in its condition shown in

FIG. 22

, which is preparatory to the next desired usage of dispenser


16


.




While the preferred embodiment of the invention illustrates the passageways


40


in the form of apertures


41


, variations are possible within the scope of the present invention. For example, the passageways


40


could be formed in the configuration of one or more slots


43


, as illustrated on cover


10


′ in FIG.


5


. Alternately, the passageways could be formed as one or more slits


45


,


47


as shown in

FIGS. 6 and 7

. In

FIG. 6

, the slits


45


are formed in cross-like configuration, and in

FIG. 7

the slits


47


are formed in single cut configuration. The passageways formed by slits


45


,


47


permit product


18


to pass therethrough to the top surface


42


of cover


10


when the product is forced against the underside surface


38


which causes the area of the cover surrounding the slits to separate and open the slits. After dispensing of product


18


and relief of pressure by the product against the underside surface


38


, the area of the cover surrounding the slits will return to its original position illustrated in

FIGS. 6 and 7

in which the slits are again closed.




Although thinned wall weakened area


34


is illustrated in

FIGS. 1-4

,


8


and


17


-


22


as generally single scallop arc-like configuration on the underside surface


38


of cover


10


, a wide range of variations are contemplated within the scope of the invention. For instance, the weakened area could be formed in single or multiple configurations, on the top or underside surface of the cover, or both surfaces. The area also can be formed in scallop, arc-like configurations, as notches, or as accordion pleats. The important feature is that the general area


34


proximate corner


36


of cover


10


be weakened to permit the desired flexing of the cover between positions A and B, as explained above. Representative alternate embodiments of such variant-formed weakened areas are illustrated in

FIGS. 9-16

of the drawings, but these are intended to be illustrative only of the formations which can be employed and other variations are possible within the scope of the invention.




In

FIG. 9

, weakened area


64


is formed by a generally single scallop, arc-like portion


66


positioned on the top surface


68


of the cover


10


A, rather than the underside surface


70


as illustrated on cover


10


in

FIGS. 1-4

.




In

FIG. 10

, weakened area


74


is formed by multiple generally scallop, arc-like portions


76


,


78


positioned on the top surface


80


and on the underside surface


82


of cover


10


B.




In

FIG. 11

, weakened area


84


is formed by multiple generally scallop, arc-like portions


86


,


88


positioned on the underside surface


90


of cover


10


C.




In

FIG. 12

, weakened area


92


is formed by multiple generally scallop, arc-like portions


94


,


96


positioned on the top surface


98


of cover


10


D.




In

FIG. 13

, weakened area


100


is formed by a generally V-shaped notch


102


positioned on the underside surface


104


of cover


10


E.




In

FIG. 14

, weakened area


106


is formed by a generally V-shaped notch


108


positioned on the top surface


110


of cover


10


F.




In

FIG. 15

, weakened area


112


is formed by multiple V-shaped notches


114


,


116


in the general configuration of accordion pleats positioned on the top and underside surfaces


118


,


120


of cover


10


G.




In

FIG. 16

, weakened area


122


is formed by multiple V-shaped notches


124


,


126


positioned on the underside surface


128


of cover


10


H.




In each of the illustrated embodiments of

FIGS. 9-16

, as in the preferred embodiment of

FIGS. 1-4

, the weakened areas function to permit the cover to flex between positions A and B as described.




Modifications and variations of the present invention are possible in light of the above teachings. A specific dimension, material or construction is not required so long as the invention is capable of functioning as herein described. It is therefore to be understood that within the scope of the appended claims, the invention may be practiced otherwise than as specifically described.



Claims
  • 1. A dispensing cover for a product dispenser, the dispenser including a sleeve in which the product is contained between a first end having product moving means to move the product within the sleeve and a second dispensing end toward which the product is moved by said product moving means, said cover comprising, a relatively thick dome portion with an external top surface and an internal underside surface, a depending skirt portion co-joined with the dome portion about a peripheral edge thereof, said cover being secured to the dispenser at the dispensing end thereof, at least one passageway provided in the dome portion to permit the product to pass through the cover to said external top surface, and a weakened relatively thin area formed in the cover about said peripheral edge acting as a peripheral hinge to permit the dome portion to flex into contact with the product when a force is exerted against said external top surface of the cover to express said product through said cover and to return to its original unflexed position out of contact with the product when the force is removed from said external top surface of the cover.
  • 2. A dispensing cover as claimed in claim 1 in which an air gap is present between said underside surface and the product when the dome portion is returned to its original unflexed position upon removal of the force from said external top surface of the cover.
  • 3. A dispensing cover as claimed in claim 1 including a plurality of passageways arrayed over the external top surface of said dome.
  • 4. A dispensing cover as claimed in claim 1 in which said passageway is a slot.
  • 5. A dispensing cover as claimed in claim 1 in which said passageway is a slit.
  • 6. A dispensing cover as claimed in claim 1 in which said passageway is a pair of cross slits.
  • 7. A dispensing cover as claimed in claim 1 in which said weakened area is formed by a thinned wall corner.
  • 8. A dispensing cover as claimed in claim 7 in which said thinned wall corner is formed from stock which is of a thickness less than at least some of the remaining portions of said cover.
  • 9. A dispensing cover as claimed in claim 7 in which the thinned wall corner is formed on said internal underside surface.
  • 10. A dispensing cover as claimed in claim 7 in which said thinned wall corner is formed on said external top surface.
  • 11. A dispensing cover as claimed in claim 1 in which said weakened area is formed by at least one generally scallop-shaped thinned wall portion of the cover.
  • 12. A dispensing cover as claimed in claim 1 in which said weakened area is formed by at least one generally V-shaped notch formed in the cover.
  • 13. A dispensing cover as claimed in claim 1 in which said weakened area is formed by multiple V-shaped notches in the general configuration of accordion pleats formed in the cover.
US Referenced Citations (15)
Number Name Date Kind
1017957 Clark Feb 1912
2917765 Jakubowski Dec 1959
2949621 Clement et al. Aug 1960
2949622 Clement Aug 1960
3088636 Spatz May 1963
3220044 Smalley Nov 1965
4184603 Hamilton, Sr. Jan 1980
4230240 Laauwe Oct 1980
4623337 Maurice Nov 1986
4681524 Ikeda et al. Jul 1987
4865231 Wiercinski Sep 1989
5000356 Johnson et al. Mar 1991
5007755 Thompson Apr 1991
5073057 Lathrop et al. Dec 1991
5454660 Sakurai et al. Oct 1995
Foreign Referenced Citations (4)
Number Date Country
249473 Oct 1962 AU
100204 Feb 1984 EP
1441112 Aug 1966 FR
2573734 May 1986 FR