Liner piercing twist closure
First Claim
1. A dispensing closure for a container that has an opening to the container interior where a fluent substance may be stored, and wherein a membrane is interposed between the container and dispensing closure, said dispensing closure comprising:
- (A) a base for extending from said container at said container opening, said base defining (1) a receiving passage through said base, and (2) an annular sealing flange that (a) is located axially outwardly of at least part of the length of said receiving passage, and (b) extends radially inwardly from a peripheral portion of said receiving passage to define an opening into said receiving passage;
(B) a movable spout that (1) is at least partly disposed in said base receiving passage, (2) has a dispensing passage extending through said spout, (3) has a grippable discharge end that (a) is located at an axially outward end of said spout, and (b) projects axially outwardly from said base, (4) has a peripheral sealing surface that is sealingly engaged by said base annular sealing flange, and (5) has a piercing element at an axially inward end of said spout;
(C) a cam track located in one of said base and spout axially inwardly of said annular sealing flange; and
(D) a cam follower that is (1) located on the other one of said base and spout, and (2) engaged in said cam track whereby said spout grippable discharge end can be grasped to rotate said spout for moving said spout axially from an axially outward, non-piercing location to an axially inward, piercing location.
1 Assignment
0 Petitions
Accused Products
Abstract
A dispensing closure system is provided for a container that has an opening wherein a membrane is interposed between the container opening and the dispensing closure system. The system includes a base for extending from the container at the opening. The base has a receiving passage and an annular sealing flange extending radially inwardly around the passage. A movable spout is mounted in the base receiving passage and has a grippable discharge end that projects axially outwardly from the base receiving passage. The spout has a dispensing passage extending through the spout and has a peripheral sealing surface that is sealingly engaged with the base annular sealing flange. The spout also has a piercing element at an axially inward end of the spout. A cam track is located in either the base or the spout. A cam follower is located on the other one of the base and spout, and the cam follower is engaged in the cam track. The grippable discharge end of the spout can be grasped to rotate the spout for moving the spout axially to pierce the membrane.
50 Citations
18 Claims
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1. A dispensing closure for a container that has an opening to the container interior where a fluent substance may be stored, and wherein a membrane is interposed between the container and dispensing closure, said dispensing closure comprising:
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(A) a base for extending from said container at said container opening, said base defining (1) a receiving passage through said base, and (2) an annular sealing flange that (a) is located axially outwardly of at least part of the length of said receiving passage, and (b) extends radially inwardly from a peripheral portion of said receiving passage to define an opening into said receiving passage; (B) a movable spout that (1) is at least partly disposed in said base receiving passage, (2) has a dispensing passage extending through said spout, (3) has a grippable discharge end that (a) is located at an axially outward end of said spout, and (b) projects axially outwardly from said base, (4) has a peripheral sealing surface that is sealingly engaged by said base annular sealing flange, and (5) has a piercing element at an axially inward end of said spout; (C) a cam track located in one of said base and spout axially inwardly of said annular sealing flange; and (D) a cam follower that is (1) located on the other one of said base and spout, and (2) engaged in said cam track whereby said spout grippable discharge end can be grasped to rotate said spout for moving said spout axially from an axially outward, non-piercing location to an axially inward, piercing location. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification