초록 ▼

A dispensing closure having a dispensing passage in an outlet spout is provided for use with an associated container. The unitary dispensing closure has a rigid base with a seal surface and latch surface, and a spout with a dispensing passage, a dispensing end and a first end connected with the base

A dispensing closure having a dispensing passage in an outlet spout is provided for use with an associated container. The unitary dispensing closure has a rigid base with a seal surface and latch surface, and a spout with a dispensing passage, a dispensing end and a first end connected with the base with seal means on the first end of the spout about the passage. The outlet spout is connected to the base by a hinge connected with an invertible diaphragm and by a second hinge interconnecting the invertible diaphragm to the base at a bi-sector plane. The diaphragm is in convexed configuration when the spout is in dispensing position and in concaved configuration when the spout is in sealed position, the spout in moving to sealed position pivoting about a pivot line, thus collapsing the invertible diaphragm through the bi-sector plane to seat the seal against the base seal surface and urge the dispensing end of the spout to abut the base latch surface in sealing relationship. Abutment on both ends of the spout provides positive sealing.

대표청구항 ▼

A unitary dispensing closure and valve for cooperation with an associated container, comprising: a rigid base defining a seal surface and a rigid latch surface, a rigid spout having a dispensing passage, a first end portion connected with the rigid base at a rectilinear pivot line hinge, and a dispe

A unitary dispensing closure and valve for cooperation with an associated container, comprising: a rigid base defining a seal surface and a rigid latch surface, a rigid spout having a dispensing passage, a first end portion connected with the rigid base at a rectilinear pivot line hinge, and a dispensing second end portion, an invertible diaphragm connected to the outlet spout by a first hinge continuous with the pivot line and defining therewith a continuous hinge about the spout first end portion, said invertible diaphragm being connected to the rigid base by a second hinge, said pivot line and said second hinge defining a continuous hinge disposed in a common bi-sector plane which bisects an angle between said rigid base seal surface and inside surface of the outlet spout when the spout is in its dispensing position, said pivot line, first hinge and second hinge cooperating to invert the invertible diaphragm during pivoting movement of the outlet spout about the pivot line between its sealed and dispensing positions, the movement of the outlet spout to the sealed position being governed by pivoting of the spout about said rectilinear pivot to collapse the invertible diaphragm through the bi-sector plane, said invertible diaphragm being disposed in a convexed configuration when the spout is in its dispensing position and being disposed in a concaved configuration when the spout is in its sealed position, resilient fluid seal means configurated and positioned to provide sealing between the base seal surface and the first end portion of the outlet spout about said dispensing passage when the outlet spout is in its said sealed position, and means on said base for attaching the closure to the associated container.