# US 5,704,408 A · Pour spout > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,704,408 A - Document ID: US5704408A - Status: Granted - Kind: A - Application number: 08/422,554 - Filed: 1995-04-14 - Granted: 1998-01-06 - Earliest claimed: 1987-03-16 - Assignees: Vemco Corporation - Inventors: Verl Law - Web page: https://patentgrep.com/patent/US5704408A ## CPC - B65D 25/48: Separable nozzles or spouts - B65D 47/283: {between tubular parts} - B65D 47/32: with means for venting - B67D 7/005: {Spouts} - B67D 7/04: for transferring fuels, lubricants or mixed fuels and lubricants - 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 - B67D: DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR (cleaning pipes or tubes or systems of pipes or tubes B08B9/02; emptying or filling of bottles, jars, cans, casks, barrels, or similar containers, not otherwise provided for B67C; water supply E03; pipe systems F17D; domestic hot-water supply systems F24D; measuring volume, volume flow, mass flow or liquid level, metering by volume G01F; coin-freed or like apparatus G07F) ## Abstract A hollow tube attachable at one end to a container of fluid is provided at the other end with a fluid conduit termination disk separated from the end of the hollow tube by a space that defines a fluid discharge opening. A slide valve on the exterior of the tube is biased into a closed position engaging the fluid conduit termination disk and precluding fluid transfer until the discharge opening is inside a receiving vessel. A barricade is disposed across the interior of the tube at an inclination relative to the longitudinal axis thereof. Formed through the barricade is at least one elongated aperture extending continuously from a first longitudinal position in the tube to a second longitudinal position in the tube that is located further from the container of fluid than is the first longitudinal position. When the slide valve is opened, fluid passes through the barrier at the first longitudinal position, while air is simultaneously exchanged therethrough at the second longitudinal position, venting the container of fluid. ## Claims ### Claim 1 A pour spout for permitting transfer of a fluid from a container of the fluid to a receiving vessel, the pour spout comprising: (a) a fluid conduit opening at one end thereof into the container of fluid, said fluid conduit being provided at a location remote from the container with a fluid discharge opening through which fluid from the container is transferred into the receiving vessel; (b) closure means for precluding any transfer of the fluid through said discharge opening into the receiving vessel until said fluid discharge opening is inside the receiving vessel, said closure means comprising: (i) a slide valve having a closed position in which transfer of the fluid through said discharge opening is precluded; (ii) a spring urging said slide valve into said closed position thereof; and (iii) slide valve release means for co-acting with the receiving vessel to move said slide valve out of said closed position when said fluid discharge opening on said fluid conduit enters into the receiving vessel; and (c) baffle means located in said fluid conduit for (1) admitting air into the interior space within said fluid conduit and the container at a first longitudinal position in said fluid conduit, and (2) maintaining the point of zero static head pressure in fluid flowing through the baffle means at a second longitudinal position located further from the container of fluid than said first longitudinal position, said baffle means comprising a plate disposed across the interior of said fluid conduit at an inclination relative to the longitudinal axis thereof, said plate having an air vent aperture formed therethrough at said first longitudinal position in said fluid conduit and a fluid aperture formed therethrough at said second longitudinal position in said fluid conduit. ### Claim 2 (depends on 1) A pour spout as recited in claim 1, wherein said fluid aperture formed through said plate extends from said second longitudinal position in said fluid conduit toward said first longitudinal position in said fluid conduit. ### Claim 3 (depends on 1) A pour spout as recited in claim 1, further comprising a fluid conduit termination disk supported at a distance from the end of said fluid conduit remote from the container of fluid, thereby to form said fluid discharge opening between said fluid conduit termination disk and the end of said fluid conduit remote from the container of fluid. ### Claim 4 (depends on 3) A pour spout as recited in claim 3, wherein said fluid conduit termination disk is supported from said plate. ### Claim 5 (depends on 4) A pour spout as recited in claim 4, wherein said fluid conduit termination disk is supported from said plate by a support shaft. ### Claim 6 (depends on 5) A pour spout as recited in claim 5, wherein said fluid aperture formed through said plate is elongated in a direction toward the location at which said support shaft is attached to said plate. ### Claim 7 (depends on 5) A pour spout as recited in claim 5, wherein said fluid conduit termination disk is attached to one end of said support shaft, and said support shaft and said fluid conduit termination disk are cantilevered from said plate. ### Claim 8 (depends on 4) A pour spout as recited in claim 4, wherein said fluid conduit termination disk is supported from said plate at a medial portion of said plate. ### Claim 9 (depends on 3) A pour spout as recited in claim 3, wherein said slide valve is in a sealing engagement with said fluid conduit termination disk when said slide valve is in said closed position. ### Claim 10 (depends on 3) A pour spout as recited in claim 3, further comprising a slide valve seal encircling said fluid conduit termination disk, said slide valve seal and said slide valve being in a sealing engagement when said slide valve is in said closed position. ### Claim 11 (depends on 3) A pour spout as recited in claim 3, wherein said fluid conduit termination disk is concentrically disposed about the longitudinal axis of said fluid conduit. ### Claim 12 (depends on 1) A pour spout as recited in claim 1, wherein said plate is planar. ### Claim 13 (depends on 1) A pour spout as recited in claim 1, wherein said fluid aperture is elongated. ### Claim 14 (depends on 1) A pour spout as recited in claim 1, wherein said fluid aperture has a wedge-shaped configuration. ### Claim 15 (depends on 1) A pour spout as recited in claim 1, wherein said plate is disposed in said fluid conduit at a location remote from the container of the fluid. ### Claim 16 (depends on 1) A pour spout as recited in claim 1, wherein said plate is disposed in said fluid conduit at a location proximal to the container of the fluid. ### Claim 17 (depends on 1) A pour spout as recited in claim 1, wherein said plate has an upper portion proximal to said first longitudinal position in said fluid conduit and a lower portion proximal to said second longitudinal position in said conduit, said upper portion of said plate being disposed closer to said one end of said fluid conduit than said lower portion of said plate. ### Claim 18 (depends on 17) A pour spout as recited in claim 17, wherein said plate has a peripheral edge, and said air vent aperture is defined by said peripheral edge at said upper portion of said plate and by the interior of said fluid conduit opposite thereto. ### Claim 19 (depends on 17) A pour spout as recited in claim 17, wherein said plate has a peripheral edge, and said fluid aperture is defined by said peripheral edge at said lower portion of plate and by the interior of said fluid conduit opposite thereto. ### Claim 20 (depends on 17) A pour spout as recited in claim 17, wherein said plate has a peripheral edge, said peripheral edge of said plate proximal to said upper portion of said plate being linear. ### Claim 21 (depends on 1) A pour spout as recited in claim 1, wherein said plate has a peripheral edge that is secured to the interior of said fluid conduit. ### Claim 22 (depends on 1) A pour spout as recited in claim 1, wherein said plate has a uniform thickness. ### Claim 23 A pour spout for permitting transfer of a fluid from a container of the fluid into a receiving vessel, the pour spout comprising: (a) a fluid conduit opening at one end thereof into the container of fluid; (b) a fluid conduit termination disk supported at a distance from the end of said fluid conduit remote from the container of fluid, thereby to define between said fluid conduit termination disk and the end of said fluid conduit remote from the fluid container a fluid discharge opening through which fluid from the container is transferred into the receiving vessel; (c) closure means for precluding any transfer of the fluid through said discharge opening into the receiving vessel until said fluid discharge opening is inside the receiving vessel; and (d) a barrier to flow of the fluid comprising a planar structure disposed across the interior of said fluid conduit at an inclination relative to said longitudinal axis thereof, said planar structure having formed therethrough an air vent aperture at a first longitudinal position in said fluid conduit and a fluid aperture at a second longitudinal position in said fluid conduit located remote from said first longitudinal position relative to the container of fluid. ### Claim 24 (depends on 23) A pour spout as recited in claim 23, wherein said planar structure has a uniform thickness. ### Claim 25 (depends on 23) A pour spout as recited in claim 23, wherein said fluid aperture is elongated. ### Claim 26 (depends on 23) A pour spout as recited in claim 23, wherein said planar structure has an upper portion proximal to said first longitudinal position in said fluid conduit and a lower portion proximal to said second longitudinal position in said fluid conduit, said upper portion of said planar structure being disposed closer to said one end of said fluid conduit than said lower portion of said planar structure. ### Claim 27 (depends on 26) A pour spout as recited in claim 26, wherein said planar structure has a peripheral edge, and said air vent aperture is defined by said peripheral edge at said upper portion of said planar structure and by the interior of said fluid conduit opposite thereto. ### Claim 28 (depends on 26) A pour spout as recited in claim 26, wherein said planar structure has a peripheral edge, and said fluid aperture is defined by said peripheral edge at said lower portion of said planar structure and by the interior of said fluid conduit opposite thereto. ### Claim 29 (depends on 23) A pour spout as recited in claim 23, wherein said closure means comprises: (a) a slide valve having a closed position in which transfer of the fluid through said discharge opening is precluded (b) a spring urging said slide valve into said closed position thereof; and (c) slide valve release means for co-acting with the receiving vessel to move said slide valve out of said closed position when said fluid discharge opening on said fluid conduit enters into the receiving vessel. ### Claim 30 (depends on 29) A pour spout as recited in claim 29, wherein said fluid conduit termination disk is supported from said planar structure. ### Claim 31 (depends on 30) A pour spout as recited in claim 30, wherein said fluid conduit termination disk is supported from said planar structure at a medial portion thereof. ### Claim 32 (depends on 30) A pour spout as recited in claim 30, wherein said fluid conduit termination disk is supported from said planar structure by a support shaft. ### Claim 33 (depends on 32) A pour spout as recited in claim 32, wherein said fluid conduit termination disk is attached to one end of said support shaft and said support shaft and said fluid conduit termination disk are cantilevered from said planar structure. ### Claim 34 (depends on 29) A pour spout as recited in claim 29, wherein said slide valve is in a sealing engagement with said fluid conduit termination disk when said slide valve is in said closed position. ### Claim 35 (depends on 29) A pour spout as recited in claim 29, further comprising a slide valve seal encircling said fluid conduit termination disk, said slide valve seal and said slide valve being in a sealing engagement when said slide valve is in said closed position. ### Claim 36 (depends on 23) A pour spout as recited in claim 23, wherein said planar structure is disposed in said fluid conduit at a location remote from the container of the fluid. ### Claim 37 (depends on 23) A pour spout as recited in claim 23, wherein said planar structure is disposed in said fluid conduit at a location proximal to the container of the fluid. ### Claim 38 (depends on 23) A pour spout as recited in claim 23, wherein said planar structure has a peripheral edge that is secured to the interior of said fluid conduit. ### Claim 39 A pour spout for permitting transfer of a fluid from a container of the fluid into a receiving vessel, the pour spout comprising: (a) a fluid conduit opening at one end thereof into the container of fluid, said fluid conduit being provided at a location remote from the container with a fluid discharge opening through which fluid from the container is transferred into the receiving vessel; (b) a fluid conduit termination disk supported at a distance from the end of said fluid conduit remote from the container of fluid, thereby to define between said fluid conduit termination disk and the end of said fluid conduit remote from the fluid container a fluid discharge opening through which fluid from the container is transferred into the receiving vessel; (c) a slide valve having a closed position in which transfer of the fluid through said discharge opening is precluded; (d) a spring urging said slide valve into said close position thereof; (e) slide valve release means for co-acting with the receiving vessel to move said slide valve out of said close position when said fluid discharge opening on said fluid conduit enters into the receiving vessel; and (f) a plate disposed across the interior of said fluid conduit at an inclination relative to the longitudinal axis thereof, said plate having an air vent aperture formed therethrough at said first longitudinal position in said fluid conduit and a fluid aperture formed therethrough at a second longitudinal position in said fluid conduit. ### Claim 40 (depends on 39) A pour spout as recited in claim 39, wherein said plate is planar. ### Claim 41 (depends on 39) A pour spout as recited in claim 39, wherein said fluid conduit termination disk is supported from said plate. ### Claim 42 (depends on 39) A pour spout as recited in claim 39, wherein said plate has a uniform thickness. ### Claim 43 (depends on 39) A pour spout as recited in claim 39, wherein, said plate has an upper portion proximal to said first longitudinal position in said fluid conduit and a lower portion proximal to said second longitudinal position in said conduit, said upper portion of said plate being disposed closer to said one end of said fluid conduit opening than said lower portion of said plate. ### Claim 44 (depends on 43) A pour spout as recited in claim 43, wherein said plate has a peripheral edge, and said air vent aperture is defined by said peripheral edge at said upper portion of said plate and by the interior of said fluid conduit opposite thereto. ### Claim 45 (depends on 43) A pour spout as recited in claim 43, wherein said plate has a peripheral edge, said peripheral edge of said plate proximal to said upper portion of said plate being linear. ### Claim 46 (depends on 43) A pour spout as recited in claim 43, wherein said plate has a peripheral edge, and said fluid aperture is defined by said peripheral edge at said lower portion of plate and by the interior of said fluid conduit opposite thereto. ### Claim 47 (depends on 39) A pour spout as recited in claim 39, wherein said fluid aperture has a wedge-shaped configuration. ### Claim 48 (depends on 39) A pour spout as recited in claim 39, wherein said plate has a peripheral edge that is secured to the interior of said fluid conduit. ### Claim 49 (depends on 39) A pour spout as recited in claim 39, wherein said plate is disposed in said fluid conduit at a location remote from the container of fluid. ### Claim 50 (depends on 39) A pour spout as recited in claim 39, wherein said fluid conduit termination disk is supported from said plate by a support shaft.