# US 2014/0151395 A1 · Unknown > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0151395 A1 - Document ID: US20140151395A1 - Status: Published application - Kind: A1 - Application number: 14/088,253 - Filed: 2013-11-22 - Published: 2014-06-05 - Earliest claimed: 2012-11-23 - Assignees: Sarl Le Prieure - Applicants: Sarl Le Prieure - Inventors: Raphael Lame - Web page: https://patentgrep.com/patent/US20140151395A1 ## CPC - B65D 47/40: with drip catchers or drip-preventing means - E04D 11/002: {consisting of two or more layers, at least one of the layers permitting turfing of the roof} - E04D 13/0409: {Drainage outlets, e.g. gullies} - E04D 2013/0427: {with means for controlling the flow in the outlet} - Y02A 30/254: Roof garden systems; Roof coverings with high solar reflectance - Y02B 80/32: Roof garden systems - 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 - E04D: ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS (coverings of outer walls by plaster or other porous material E04F13/00) - Y02A: TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE - Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS ## Abstract A device for discharging water from an inner space of a temporary water retention tank through a first discharge passage (2), characterized in that it comprises: a conduit (1) laid out for ensuring fluidic communication between the inner space and the first discharge passage (2), the conduit (1) having an inner section (12), the surface area of which increases in the direction of flow of the water in the conduit towards the first discharge passage (2) and an obturator (3) positioned inside the conduit (1), and controlled so as to be moved inside the conduit (1) according to the water level in the inner space, the displacement of the obturator (3) in the conduit (1) allowing regulation of the leak rate through the first discharge passage (2) regardless of the water level in the inner space between a first level and a second water level. ## Claims ### Claim 1 A device for discharging water from an inner space of a temporary water retention tank through a first discharge passage, characterized in that it comprises: a conduit laid out for ensuring fluidic communication between the inner space and the first discharge passage, the conduit having an inner section, the surface area of which increases in the direction of flow of the water in the conduit towards the first discharge passage and an obturator positioned inside the conduit and controlled so as to be moved inside the conduit according to the water level in the inner space, the displacement of the obturator in the conduit giving the possibility of regulating the leak flow rate through the first discharge passage regardless of the water level in the inner space between a first level and a second water level. ### Claim 2 (depends on 1) The device according to claim 1, wherein the inner section of the conduit is of a conical shape. ### Claim 3 (depends on 1) The device according to claim 1, wherein the obturator is connected to a float, the height of the float being determined by the water level in the inner space and controlling the position of the obturator. ### Claim 4 (depends on 3) The device according to claim 3, wherein the obturator is connected to the float through a wire connection crossing the conduit. ### Claim 5 (depends on 3) The device according to claim 3, further comprising a guide along which the float moves. ### Claim 6 (depends on 1) The device according to claim 1, wherein the obturator has a shape mating an open end of the conduit opposite the first discharge passage, so as to block the flow of water through said end when the water level in the inner space exceeds the first level. ### Claim 7 (depends on 6) The device according to claim 6, wherein the conduit has a second overflow discharge passage capable of ensuring fluidic communication between the inner space and the conduit, opening downstream from said end of the conduit so that the water present in the inner space may flow through the second passage towards the first passage when the obturator blocks the flow of water through said end. ### Claim 8 (depends on 1) The device according to claim 1, wherein the regulated leak rate is a constant flow rate regardless of the water level in the inner space in the first level and the second water level. ### Claim 9 (depends on 1) The device according to claim 1, wherein the conduit and the obturator are housed in a casing delimiting an intermediate space and having a third passage connecting the inner space and the intermediate space. ### Claim 10 (depends on 1) The device according to claim 1, wherein the third passage is provided with a filter. ### Claim 11 (depends on 1) A temporary water retention tank comprising a water discharge device according to claim 1. ### Claim 12 (depends on 1) A water retention system, comprising a temporary water retention pan and a revegetation pan, the revegetation pan being: conformed so as to fit into the temporary water retention pan, or is made in the same material with the temporary water retention pan, the temporary water retention pan comprising a water discharge device according to claim 1.