# US 7,743,815 B2 · Slats for a sun protection blind > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,743,815 B2 - Document ID: US7743815B2 - Status: Granted - Kind: B2 - Application number: 11/662,464 - Filed: 2005-08-24 - Published: 2008-04-17 - Granted: 2010-06-29 - Earliest claimed: 2004-09-09 - Inventors: Ulrich Clauss - Web page: https://patentgrep.com/patent/US7743815B2 ## CPC - E06B 9/15: with closing members formed of slats or the like - E06B 9/165: with slats disappearing in each other; with slats the distance between which can be altered - E06B 2009/1527: {Transparent slats or transparent sections in slats} - E06B 2009/1538: {Slats directly connected} - E06B: FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES (shades or blinds for greenhouses A01G9/22; curtains A47H; lids for car boots or bonnets B62D25/10; skylights E04B7/18; sunshades, awnings E04F10/00) ## Abstract The invention relates to roller blind slats having a profile which is shaped by flat sheet metal in a rolling step. A single-pieced roller blind body is associated with the roller blind slats. The roller blind body is formed with a slot on the underside thereof and a hooked strip is provided on the top edge thereof. The slot part is approximately 20% on the total surface of the roller blind slats. ## Claims ### Claim 1 A roller shutter (1) comprising: a plurality of roller shutter laths (3) each made from a rolled and formed one piece sheet material; said laths (3) each comprising a slat (5) extending the length of the roller shutter lath (3), said slat (5) being curved at a lengthwise edge thereof to form a channel (6) and a hook arrangement; a plurality of light/air slots (22) arranged in the slat (5), said light/air slots (22) being arranged adjacent each other in the lengthwise direction of the roller shutter lath (3), said light/air slots (22) having a height corresponding to 40% to 80% of the height of the slat (5) such that in the suspended state of the roller shutter (1) the proportion of surface area of the light/air slots (22) amounts to about 20% to 30% of the total surface area of the roller shutter (1); a lath body (4) having a top side (13) from which the slat (5) emerges and extends, said channel (6) being arranged a distance from the lath body (4) such that the height of the slat (5) measured between the channel (6) and the top side of the lath body (4) is more than 30% of the height of the lath body (4); said lath body (4) having an underside (10) and defining an interengagement slot (7) extending along the length of the lath (3), said interengagement slot (7) opening downwardly away from the slat (5) and being configured such that the channel (6) of a second identically configured roller shutter lath (3) can be hooked therein; and a canopy-like projection (10) formed by said underside (10) between the interengagement slot (7) and a front side (8,9) of the lath (3) that extends along the length of the roller shutter lath (3) alongside the slot (7) and forms a sunroof protruding forwardly of the light/air slots (22) in the lath (3) located underneath which shades the light/air slots (22) of an underlying lath (3). ### Claim 2 (depends on 1) A roller shutter according to claim 1, wherein the canopy-like projection is arranged at a bottom side of a hollow space defined by the lath body. ### Claim 3 (depends on 1) A roller shutter according to claim 1, wherein the canopy-like projection is formed by a bottom side of the lath body in the area between the interengagement slot and a front side of the roller shutter lath. ### Claim 4 (depends on 1) A roller shutter according to claim 1, wherein the slat has a two-ply construction. ### Claim 5 (depends on 1) A roller shutter according to claim 1, wherein the roller shutter lath has a two-ply construction in the area of the channel. ### Claim 6 (depends on 5) A roller shutter according to claim 5, wherein an outer layer of the two-ply construction is bent inward at a free edge thereof in the area of the channel. ### Claim 7 (depends on 1) A roller shutter according to claim 1, wherein the lath body has a plurality of sides and each side has a two-ply construction. ### Claim 8 (depends on 7) A roller shutter according to claim 7, wherein the interengagement slot is bounded by two edges that are parallel to each other, one of the edges being spaced upwards from the other in a direction towards an interior of the lath body. ### Claim 9 (depends on 8) A roller shutter according to claim 8, wherein the two-ply construction comprises two sheet metal layers and the two sheet metal layers are co-joined at the edges of the interengagement slot. ### Claim 10 (depends on 9) A roller shutter according to claim 9, wherein the two sheet metal layers are adjacent each other in all locations except a at a base of the slot. ### Claim 11 (depends on 1) A roller shutter according to claim 1, wherein the lath body defines a continuous cavity. ### Claim 12 (depends on 1) A roller shutter according to claim 1, wherein the lath body defines a front side including a first slanting surface and a second surface that extends vertically from the front slanting surface. ### Claim 13 (depends on 1) A roller shutter according to claim 1, wherein the lath body defines a rear side that extends vertically. ### Claim 14 (depends on 1) A roller shutter according to claim 1, wherein the slat has a predetermined height that prevents the light/air slats in the slat from being covered by an upper identically configured roller shutter lath when the roller shutter lath is suspended from the upper roller shutter lath. ### Claim 15 (depends on 1) A roller shutter according to claim 1, wherein the lath body includes a bottom side having a flat surface lying next to the interengagement slot. ### Claim 16 (depends on 15) A roller shutter according to claim 15, wherein the bottom side of the lath body extends horizontally in the direction of a front wall of the lath body. ### Claim 17 (depends on 1) A roller shutter according to claim 1, wherein the roller shutter lath is made of an aluminum or coated aluminum material.