The novel features which are characteristic of the dispensing closure are set forth in the appended claims. However, the dispensing closure, together with further embodiments and attendant advantages, will be best understood by reference to the following detailed description taken in connection with the accompanying drawing Figures.
Referring now to the drawings, the dispensing closure 10 of the instant invention is illustrated in
Generally, the dispensing closure 10 comprises a closure body 20, a closure lid 130 and a living hinge structure 140 hingeably connecting the closure lid 130 to the closure body 20. The closure body 20 has an upper deck 30 and a skirt 40 depending from the upper deck 30 where the skirt 40 is configured and arranged to mount to a product container (not shown). Preferably, the product container is a conventional squeeze-type container. Preferably, the skirt 40 is internally threaded for threaded mounting on a product container (See
A flow conduit generally indicated at 50 extends through the upper deck 30 for the passage of a viscous product, such as mustard. The flow conduit 50 is generally defined by an interior wall 50C, an exterior wall 50F, and a bottom wall 50G (baffle). The flow conduit 50 includes an entrance orifice 50A (inside the container) having an entrance axis X and an exit orifice 50B (outside the container) having an exit axis Y. Generally, the entrance axis X is offset from the exit axis Y to provide a non-linear flow path (see arrows F) from the interior of the closure 10 to the exterior of the closure. More specifically, the flow conduit 50 is expanded to the side of the exit orifice 50B, and the entrance orifice 50A is located in the bottom wall 50G, but offset from the exit orifice 50B. The entrance axis X is thus parallel to but not co-linear with the exit axis Y. Referring briefly to
The bottom wall 50G of the conduit thus prevents the direct flow of product (see arrows P—
The baffling effect is also enhanced by the passage of the product from the container, through the small entrance orifice 50A and into the interior of the flow conduit 50. The velocity of the product will increase as it travels through the entrance orifice 50A. However, the velocity of the product then decreases as it travels into the larger interior volume of the flow conduit 50 before it leaves through the exit orifice 50B. Spurting thus occurs into the interior of the flow conduit 50 and not directly out of the exit orifice. Accordingly, when the container is inverted, and is rapidly shaken up and down by a user to dispense the product, the product first decelerates into the larger volume interior flow conduit 50, and does not spurt out the exit orifice 50B. When pressure is applied to the squeeze container, the product is then forced out of the exit orifice 50B.
It is to be noted that the dimensions of the flow conduit 50 are adjustable, depending upon the viscosity of the product stored within an interior of the dispensing closure 10. For example, if lower viscosity mustard is contained within the interior of the dispensing closure 10, it may be desirable for the flow conduit 50 to be smaller in size or dimension to achieve a lower flow rate. In the preferred embodiment as shown, the exit orifice 50B is circular, and is somewhat smaller than the entrance orifice 50A.
Based on the disclosure above, the present invention provides a one-piece dispensing closure. Also, the invention provides a one-piece dispensing closure having a “clean-pour” dispensing characteristic. Furthermore, the invention provide a one-piece dispensing closure having a sufficient flow restriction within the flow path to counter product head pressure created when an upright container is quickly inverted and/or shaken to dispense product.
It would be appreciated by those skilled in the art that various changes and modifications can be made to the illustrated embodiments without departing from the spirit of the embodiments. All such modifications and changes are intended to be covered by the appended claims.
This application is related to and claims priority from earlier filed U.S. Provisional Patent Application No. 60/893,883 filed Mar. 8, 2007 and U.S. Provisional Patent Application No. 60/824,322 filed Sep. 1, 2006, all of which are incorporated herein by reference.
Number | Date | Country | |
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60824322 | Sep 2006 | US | |
60893883 | Mar 2007 | US |