# US 2010/0163584 A1 · Dispenser > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2010/0163584 A1 - Document ID: US20100163584A1 - Status: Published application - Kind: A1 - Application number: 12/528,990 - Filed: 2008-02-28 - Published: 2010-07-01 - Earliest claimed: 2007-02-28 - Assignees: Sophinity Pty Ltd - Inventors: Craig Wellman - Web page: https://patentgrep.com/patent/US20100163584A1 ## CPC - B65D 47/2031: {the element being formed by a slit, narrow opening or constrictable spout, the size of the outlet passage being able to be varied by increasing or decreasing the pressure (B65D47/2025 takes precedence)} - B65D: CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES ## Abstract A dispenser (10) for dispensing a fluid from a container T comprises an inlet (14) for connecting to the container so as to receive the fluid therethrough, and an outlet (16). The outlet comprises at least two walls (18), each with a respective slit (22) thereon adapted to open to release fluid therefrom when a predetermined pressure is applied to the fluid in the dispenser at the outlet, and to close to retain fluid in the dispenser at a pressure less than the predetermined pressure. ## Claims ### Claim at position 1 1-40. (canceled) ### Claim 41 A dispenser for dispensing a fluid from a container, the dispenser comprising: an inlet for connecting to the container so as to receive the fluid therethrough; and, an outlet comprising at least two walls each with a respective slit thereon adapted to open to release fluid therefrom when a predetermined pressure is applied to the fluid in the dispenser at the outlet, and to close to retain fluid in the dispenser at a pressure less than the predetermined pressure; a respective support region between and integral with at least one pair of walls positioned away from the slits and arranged so as to bias the slits towards a closed condition when no pressure is applied to the fluid. ### Claim 42 (depends on 41) The dispenser of claim 41 wherein at least one of the support regions comprises a bellows. ### Claim 43 (depends on 41) The dispenser of claim 41, wherein the slits are co-joined at a respective proximal end thereof. ### Claim 44 (depends on 41) The dispenser of claim 41, wherein a respective lateral face of each of two adjacent said walls are on intersecting planes and the slits are each located on an end of a respective said wall. ### Claim 45 (depends on 41) The dispenser of claim 41, comprising at least one support in each wall. ### Claim 46 (depends on 45) The dispenser of claim 45, wherein each support is positioned at a distal (or lateral) end of its respective wall. ### Claim 47 (depends on 45) The dispenser of claim 45, wherein the supports are support posts. ### Claim 48 (depends on 47) The dispenser of claim 47, wherein the posts are resilient and the walls are flexible. ### Claim 49 (depends on 45) The dispenser of claim 45, wherein the supports comprise high density polyethylene. ### Claim 50 (depends on 45) The dispenser of claim 45, comprising three said supports, wherein each of the supports is associated with a respective one of the walls. ### Claim 51 (depends on 41) The dispenser of claim 41, wherein the walls are of an elastomeric material. ### Claim 52 (depends on 41) The dispenser of claim 41, wherein each support region extends out from the plane of a respective face of its respective wall. ### Claim 53 (depends on 41) The dispenser of claim 41, wherein each support region is rounded. ### Claim 54 (depends on 41) The dispenser of claim 41, wherein the inlet is round. ### Claim 55 (depends on 41) The dispenser of claim 41, comprising a removable seal over the slits. ### Claim 56 (depends on 55) The dispenser of claim 55, wherein the seal is frangibly connected to distal ends of the support posts. ### Claim 57 (depends on 41) The dispenser of claim 41, comprising three said walls, each having one said slit thereon, and wherein each of the slits are co-joined at a proximal end thereof. ### Claim 58 (depends on 41) The dispenser of claim 41, wherein the slits are equiangular to each other. ### Claim 59 (depends on 41) The dispenser of claim 41, wherein the walls and support regions comprise silicon. ### Claim 60 (depends on 41) The dispenser of claim 41, wherein the walls are parallel to a central dispenser axis that extends from the outlet to the inlet, said slits extending radially from the axis. ### Claim 61 A dispenser for dispensing a fluid from a container, the dispenser comprising: an inlet for connecting to the container so as to receive the fluid therethrough; and, an outlet comprising at least two upstanding intersecting walls each with a respective slit on a distal end thereof adapted to open to release fluid therefrom when a predetermined pressure is applied to the fluid in the dispenser at the outlet, and to close to retain fluid in the dispenser at a pressure less than the predetermined pressure; a respective support region between and integral with at least one pair of walls positioned away from the slits and arranged so as to bias the slits towards a closed condition when no pressure is applied to the fluid. ### Claim 62 (depends on 61) The dispenser of claim 61 wherein at least one of the support region comprises a bellows. ### Claim 63 (depends on 61) The dispenser of claim 61, wherein the slits are co-joined at a respective proximal end thereof. ### Claim 64 (depends on 61) The dispenser of claim 61, wherein a respective lateral face of each of two adjacent said walls are on intersecting planes and the slits are on an end of their respective walls. ### Claim 65 (depends on 61) The dispenser of claim 61, comprising three said walls being equi-angularly spaced about a common axis. ### Claim 66 A dispenser for dispensing a fluid from a container, the dispenser comprising: a first resilient part having an inlet so as to receive the fluid therethrough; and, a second elastomeric part having an outlet adapted to open to release fluid therefrom when a predetermined pressure is applied to the fluid in the dispenser at the outlet and to close to retain fluid in the dispenser at a pressure less than the predetermined pressure, wherein the second part comprises two or more walls each with a respective slit thereon to provide the opening; a respective support region between and integral with at least one pair of walls positioned away from the slits and arranged so as to bias the slits towards a closed condition when no pressure is applied to the fluid. ### Claim 67 (depends on 66) The dispenser of claim 66 wherein at least one of the support region comprises a bellows. ### Claim 68 (depends on 66) The dispenser of claim 66 wherein the walls are planar and at least one of the walls lies on a plane intersecting the plane of at least one other wall. ### Claim 69 (depends on 66) The dispenser of claim 66 wherein the slits are co-joined at a respective proximal end thereof. ### Claim 70 (depends on 45) The dispenser of claim 45 wherein the walls are formed from a material which is incompatible with the material from which the supports are formed. ### Claim 71 A dispenser for dispensing a fluid from a container, the dispenser comprising: a first resilient part formed from a first material and having an inlet so as to receive the fluid therethrough; and, a second elastomeric part formed from a second material and having an outlet adapted to open to release fluid therefrom when a predetermined pressure is applied to the fluid in the dispenser at the outlet and to close to retain fluid in the dispenser at a pressure less than the predetermined pressure wherein the first material and the second material are incompatible. ### Claim 72 (depends on 71) The dispenser of claim 71 wherein the second part comprises two or more walls each with a respective slit thereon to provide the opening and the first part comprises one or more supports for supporting at least one of the walls, the one or more supports being within at least one of the two or more walls. ### Claim 73 (depends on 71) The dispenser of claim 71 wherein the walls are planar and at least one of the walls lies on a plane intersecting the plane of at least one other wall. ### Claim 74 (depends on 71) The dispenser of claim 71 wherein the first material is a polymer selected from a group comprising: a nylon (polyamide); a polyethylene such as high density polyethylene (HDPE); a polypropylene; a polyethylene terephthalate; a polybutylene terephthalate. ### Claim 75 (depends on 71) The dispenser of claim 71 wherein the second material is a polymer selected from a group comprising: silicon; a thermoplastic or thermoset elastomer-rubber; another relatively flexible/deformable elastomer; thermoplastic polyurethane (TPU).