Dispenser and process
AssigneeJames Alexander Corporation
InventorRichard James May
Life of this patent
Estimating the term…
Abstract
A dispenser (10) for use in dispensing liquid or solid material. The dispenser (10) includes wall portions forming a sealed first chamber (18) containing the material and wall portions forming a second chamber (20) and a molded, rupturable membrane (34) disposed between the first chamber (18) and the second chamber (20). The rupturable membrane (34) is preferably a circular disk with a series of molded radial depressions (40) or weld seams (40) extending from a center point of the disk. When pressure is applied directly to the membrane (34), the membrane (34) is fractured along the depressions (40) or weld seams (40). A method is provided for forming the dispenser (10) by injection molding.
Claims20
A one-piece injection molded dispenser for dispensing a flowable material, the dispenser comprising:
- a container having a first chamber and a second chamber, the first chamber adapted to contain the material;
- a membrane disposed within the container separating the first chamber and the second chamber, the membrane having a thickness and a weld seam, the weld seam having a thickness less than the thicknesses of the membrane.
A one-piece injected molded dispenser for dispensing a flowable material, the dispenser comprising:
- a container having a chamber adapted to contain the material;
- a membrane disposed at an end of the container enclosing the material within the container, the membrane having a thickness and a weld seam, the weld seam having a thickness less than the thicknesses of the membrane.
A one-piece injection molded dispenser for dispensing a flowable material, the dispenser comprising:
- a container having a first chamber and a second chamber, the first chamber adapted to contain the flowable material;
- a membrane disposed within the container separating the first chamber and the second chamber, the membrane having a weld seam wherein a first segment of injected material abuts a second segment of injected material to form the weld seam.
A one-piece injection molded dispenser for dispensing a flowable material, the dispenser comprising:
- a container having a first chamber and a second chamber, the first chamber adapted to contain the flowable material;
- a membrane disposed within the container separating the first chamber and the second chamber, the membrane having at thickness and a weld seam, the weld seam having a substantially uniform thickness that is less than the thickness of the membrane.
A one-piece injection molded dispenser for dispensing a flowable material, the dispenser comprising a container having a first chamber and a second chamber, the first chamber adapted to contain the flowable material;
- and, a membrane disposed within the container separating the first chamber and the second chamber, the membrane having at least one weld seam, the weld seam formed from a first membrane segment abutting a second membrane segment during the injection molding.
Dependencies are inferred from the claim text.