Dispensing valve
First Claim
1. A dispensing valve system comprisinga base of plastic construction, said base having a dispensing opening, an annular recess surrounding said dispensing opening, and a first annular wall separating said recess from said dispensing opening, anda dispensing valve of one-piece one-material flexible resilient molded plastic construction, said dispensing valve including:
- a center portion disposed within said annular wall and having at least one dispensing slit extending through the center portion to form at least two petals, anda peripheral portion attached to said base and including an annular rib extending into said annular recess, the annular rib configured to move radially inwardly and outwardly within said recess as a function of motion of said central portion of said dispensing valve thereby to limit axial movement of said central portion during dispensing and venting at said valve.
22 Assignments
0 Petitions
Accused Products
Abstract
A dispensing valve includes a resiliently flexible mounting portion, a resiliently flexible opening portion disposed radially inwardly of the mounting portion, and a resiliently flexible intermediate portion disposed radially between and coupled to the mounting and opening portions, and extending both radially outwardly and axially to form a first radial space between the opening and isolating portions, and spaced radially inwardly of the mounting portion to form a second radial space between the mounting and intermediate portions. The mounting portion includes an annular rib extendable axially outward with respect to the opening portion to limit axial movement of the opening portion during dispensing and venting of the valve.
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Citations
45 Claims
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1. A dispensing valve system comprising
a base of plastic construction, said base having a dispensing opening, an annular recess surrounding said dispensing opening, and a first annular wall separating said recess from said dispensing opening, and a dispensing valve of one-piece one-material flexible resilient molded plastic construction, said dispensing valve including: -
a center portion disposed within said annular wall and having at least one dispensing slit extending through the center portion to form at least two petals, and a peripheral portion attached to said base and including an annular rib extending into said annular recess, the annular rib configured to move radially inwardly and outwardly within said recess as a function of motion of said central portion of said dispensing valve thereby to limit axial movement of said central portion during dispensing and venting at said valve. - View Dependent Claims (2, 3)
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4. A dispensing valve system comprising
a resiliently flexible mounting portion; -
a resiliently flexible opening portion disposed radially inwardly of said mounting portion; and a resiliently flexible intermediate portion disposed radially between and coupled to said mounting and opening portions, and extending both radially outwardly and axially to form a V-shaped portion and to form a first radial space between said opening and intermediate portions, and spaced radially inwardly of said mounting portion to form a second radial space between said mounting and intermediate portions, wherein said mounting portion includes an annular rib extending axially outward with respect to said opening portion to limit axial movement of said opening portion during dispensing and venting at said valve system, and the opening portion includes a web and an annular wall, the web including at least two petals formed by at least one slit that extends through the web, and the annular wall arranged to extend outwardly in the radial direction and inwardly in the radial direction from the web to form the V-shaped portion with the intermediate portion. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A dispensing assembly comprising
a dispensing valve system including a resiliently flexible mounting portion; - a resiliently flexible opening portion disposed radially inwardly of said mounting portion; and
a resiliently flexible intermediate portion disposed radially between and coupled to said mounting and opening portions, and extending both radially outwardly and axially to form a V-shaped portion and to form a first radial space between said opening and intermediate portions, and spaced radially inwardly of said mounting portion to form a second radial space between said mounting and intermediate portions,wherein said mounting portion includes an annular rib extending axially outward with respect to said opening portion to limit axial movement of said opening portion during dispensing and venting at said valve system, wherein a closure shell base includes a deck having an opening wall establishing a dispensing opening and also having an axially inwardly extending annular wall to receive said mounting portion of said valve system, wherein said annular wall includes an internal engagement for positive locking with an external engagement feature of said valve system.
- a resiliently flexible opening portion disposed radially inwardly of said mounting portion; and
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26. A dispensing assembly adapted to mount on a neck finish of a container to control discharge of a product stored in the container to surroundings outside of the container through an opening formed in the neck finish, the dispensing assembly comprising
a base adapted to mount on the neck finish and formed to include a product-discharge passageway having an inlet channel arranged to receive product discharged from the container through the opening formed in the neck finish and an outlet channel arranged to discharge product to the surroundings outside of the container, and a dispensing valve coupled to the base to lie in the product-discharge passageway and configured to include a movable web formed to include a normally closed expandable discharge aperture and arranged to move axially along a central axis extending along and through the product-discharge passageway relative to the base between a normally closed state in which the expandable discharge aperture is closed and an opened state in which the expandable discharge aperture is opened during flow of product through the product-discharge passageway and the expandable discharge aperture in the opened state of the movable web, wherein the base includes a first annular wall formed to define the outlet channel and a second annular wall formed to define the inlet channel and arranged to surround the first annular wall to define therebetween a downwardly opening recess lying below a portion of a deck included in the base and communicating with the inlet channel defined by the second annular wall, wherein the dispensing valve further includes a mounting portion coupled to the second annular wall of the base and arranged to surround the movable web, a resiliently flexible intermediate portion arranged to lie between and interconnect the movable web and the mounting portion to support the movable web for up-and-down axial movement along the central axis relative to the mounting portion, and a movable rib coupled to the resiliently flexible intermediate portion and arranged to extend upwardly into the downwardly opening recess formed in the base normally to lie in spaced-apart relation to the second annular wall, and wherein the resiliently flexible intermediate portion is configured to provide upward web-motion control means for moving the movable rib within the downwardly opening recess radially outwardly away from the central axis and toward the second annular wall in response to upward axial movement of the movable web toward an outlet aperture opening into the outlet channel during pressure-actuated flow of product from the inlet channel into the outlet channel through the expandable discharge aperture in the opened state of the movable web to discharge product from the container so that the movable rib engages the second annular wall to limit upward axial movement of the movable web along the central axis relative to the base and the resiliently flexible intermediate portion is also configured to provide downward web-motion control means for moving the movable rib within the downwardly opening recess radially inwardly toward the central axis and toward the first annular wall in response to downward axial movement of the movable web away from the outlet aperture from the opened state to the normally closed state so that the movable rib engages the first annular wall to limit axial movement of the movable web along the central axis relative to the base.
Specification